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<strong>HSLA</strong> STEELS: METALWRGYAND APPLICATIONSProceedings of an InternationalConference on<strong>HSLA</strong> <strong>Steels</strong> '854-8 November 1985Beijing, ChinaEdited byJ.M. Gray, T. Ko, Zhang Shouhua,Wu Baorong, Xie XishanOrganized byThe Chinese Society of MetalsChina Science <strong>and</strong> TechnologyExchange CenterSponsored byASM InternationalAssociaeao Brasileira de MetaisAssociation Technique de la Siderurgie FrancaiseAssociazione Italiana di MetallurgiaThe Australasian Institute of MetalsThe Indian Institute of MetalsThe Institute of Metals (London)The Iron <strong>and</strong> Steel Institute of JapanThe Japan Institute of MetalsThe Metallurgical Society of AIMEVerein Deutscher EisenhuttenleutePublished by~~


PREFACEThis volume contains the proceedings of "<strong>HSLA</strong> 85", a symposium sponsored by the ChineseSociety of Metals <strong>and</strong> other learned societies that was held at the Jing Feng Hotel in Beijing,China, on November 4-8, 1985.The editorial process for a conference of this scope is tedious <strong>and</strong> time consuming <strong>and</strong> it is impossibleto correct all linguistic errors or distortions <strong>and</strong> maintain a timely publication schedule.The editors have sought to accurately preserve the character <strong>and</strong> the intentions of the originalcontributions <strong>and</strong> adopted changes for clarity rather than for purposes of uniform style.The choice of high-strength low-alloy steels as the theme for this symposium was due to the importanceof the subject to the developed <strong>and</strong> developing countries, including China, especially tothe latter, where application of scientific underst<strong>and</strong>ing <strong>and</strong> scientific control of <strong>HSLA</strong> <strong>Steels</strong> productionhave just begun to be appreciated, <strong>and</strong> their production has been hampered by oldequipment.The Chinese Steel industry has had a chequered history suffering wide fluctuations in theoverall efficiency corresponding to changes in the technical <strong>and</strong> economic policies. Despitemistakes <strong>and</strong> weaknesses, production has increased from virtually nothing in 1948 to 46 milliontons in 1985, making China the world's fourth largest steelmaker.Future planning in China, like elsewhere is emphasizing improvements in quality in addition tocapacity, increase in yield <strong>and</strong> wider adoption of efficient steels such as those considered in thisconference proceedings. The symposium <strong>HSLA</strong> 85, the first major event of its kind to be held inChina, attracted 400 foreign <strong>and</strong> domestic participants <strong>and</strong> addressed the hardware, knoW-hOW,metallurgy <strong>and</strong> manufacturing technology for producing microalloyed high strength steels.The conference partiCipants confirmed the versatility of microalloying technology <strong>and</strong> its compatibilitywith both new or old equipment. Summaries of status quo <strong>and</strong> many new developmentspresented in the symposium should be of interest worldwide, <strong>and</strong> assimilation by the Chinesesteel industry should be very rapid given the high level of cooperation <strong>and</strong> enthusiasm evidentthroughout the event.This preface would be incomplete without a word of thanks to those who helped to ensure thesuccess of this conference. All those concerned in organizing the Symposium made a generouscontribution to overcome the problem of communicating with participants in distant countries.Special thanks are due to the co-sponsor societies <strong>and</strong> their delegates <strong>and</strong> to the authorsthemselves who were often hampered by the need to work in foreign language.Our particular thanks are also directred to Prof. Fu Junzhao, Deputy Secretary-General ofCSM, who was responsible for the complex arrangements in Beijing <strong>and</strong> particularly for the successof the social events. We are sure that all delegates would wish us to record our gratitude toProfessor Fu for his insight in selecting the Chinese Minorities Players as entertainers <strong>and</strong> theGreat Hall of the People as the venue for a truly memorable final banquet.Finally, the Chinese Society of Metals acknowledges the critical contribution of ASM Internationalin publishing the proceedings <strong>and</strong> the generous contribution of Companhia Brasileira deMetalurgia e Minerac;:ao, Brazil, in supporting the cost of printing this reference volume. Thepainstaking efforts of Rosemary Cahill (Microalloying International) in correcting the editedmanuscripts also deserve special mention.J.M. Gray, T. Ko, Zhang Shouhua, Wu Baorong, Xie XishanIII


TABLE OF CONTENTSPlenary SessionProspects of the Chinese Iron <strong>and</strong> Steel Industry ............................ 3Zhou Chuan-dianSteelmaking Strategy for the Rest of the Century ............................ 7Bradford, C.A.The History of Microalloyed <strong>Steels</strong> ....................................... 15Woodhead, J.H.; Keown, S.R.Effect <strong>and</strong> Present Application of the MicroalloyingElements Nb, V, Ti, Zr, <strong>and</strong> B in <strong>HSLA</strong> <strong>Steels</strong> .............................. 29Meyer, L.; StraSburger, C.; Schneider, C.The Microalloying Industry-A Perspective ................................ 45Stuart, H.Physical <strong>Metallurgy</strong>On the Fundamentals of <strong>HSLA</strong> <strong>Steels</strong> .................................... 61Cohen, M.; Hansen, S.S.Options <strong>and</strong> Constraints for ThermomechanicalProcessing of Microalloyed Steel ........................................ 73Sellars, C.M.Austenite Conditioning Alternatives for Microalloyed Steel Products ........... 83Gray, J. M.; DeArdo, A.J.The Effect of Austenite Grain Size on the IsothermallyFormed Ferrite Grain Size .............................................. 97Umemoto, M.; Guo Zing Hai; Tamura, f.Role of Interrupted Accelerated Cooling <strong>and</strong> Microalloyingon Weldable <strong>HSLA</strong> <strong>Steels</strong> ............................................. 103Abe, T.; Tsukada, K.; Kozasu, f.Deformation <strong>and</strong> Fracture of a Microalloyed 12SiMoVNb Steel with GranularBainite Structure .................................................... 113Zhang Shouhua; Zhang Hong; Yuan YiEffect of Different Plate Rolling Schedules on Hot Strength <strong>and</strong> Structure ofTi Microalloyed <strong>Steels</strong> ................................................ 121Cheng Xian; Akben, M.G.Mixed Grain Structures in 15 MnV Steel Developed During Hot Rolling ......... 135Lu Wen-Zeng; He Yi-ZhuFerrite Grajn Size Distributions in Hot-Rolled <strong>HSLA</strong> <strong>Steels</strong> ................... 141Dunne, D.P.; Smith, R.M.; Ch<strong>and</strong>ra, T.v


The Effect of Nitrogen Content on the Evolution of Precipitates <strong>and</strong> onthe Processing of Ti-Nb Bearing <strong>HSLA</strong> Steel Slabs ......................... 151Subramanian, S. V.; Shima, S.; Ocampo, G.; Castillo, T.; Embury, J.D.; Purdy, G.R.Effect of AI on Recrystallization <strong>and</strong> Preciptation in Nb <strong>HSLA</strong> <strong>Steels</strong> .......... 163Wang, G.; Akben, M.G.Mechanical Properties of 16Mn Steel Control-Rolled in the(,,+ ex) Two-Phase Region ............................................ 173Wang Zhanxue; Yu Shuxian; Gao Youzhi; Guan WenxuanA Study of Controlled Rolling Technology in the(,,+ ex ) Two-Phase Region ........................................... 181Sun Benrong; Zhao Peixiang; Zhu RonglinOn the Response of Nb Bearing <strong>HSLA</strong> <strong>Steels</strong> to Single <strong>and</strong>Multistage Compression .............................................. 189D'Orazio, L.R.; Mitchell, A.B.; Lenard, J.G.Recrystallization of Austenite in Titanium Treated <strong>HSLA</strong> <strong>Steels</strong> ............... 199Cui Wenxuan; Yang Wangyueh; Cao Houyi; Lu Wenzeng; Chen Tean; Ho YungkangRecrystallization of Austenite in a Hot RolledTitanium <strong>HSLA</strong> Steel with Ti:N>3.4 ..................................... 207Dunne, D.P.; Ch<strong>and</strong>ra, T.; Misra, S.Effect of Thermomechanical Control Process on the Microstructure<strong>and</strong> Properties of Ti-Treated C-Mn <strong>Steels</strong> ................................. 213Ye Shunfa; Chen Gouping; Cao Meifing; Wu Boqun; Xi Xiurong; Zhao Pingshun;Zhang Kelan; Fan Jianxiang; Wang Yauming; Wei GuangMechanical Properties of V-Ti Microalloyed <strong>Steels</strong> Subject to PlateRolling Simulations Utilizing Recrystallization Controlled Rolling ............. 219Fix, R.M.; Zheng, Y.z.; DeArdo, A.J.Effect of Boron on Dynamic <strong>and</strong> Static Recrystallizationin Ultra Low Carbon Nb <strong>Steels</strong> ......................................... 229Mavropoulos, T.; Jonas, J.J.; Ruddle, G.E.The Effect of Manganese on the Recrystallization of Austenitein Low-Carbon Niobium <strong>Steels</strong> ......................................... 235Li Xiuqiu; Cui WenxuanFundamental Aspects of Precipitation in Microalloyed <strong>Steels</strong> ................ 243Honeycombe, R. W. KNew Trends in SCience <strong>and</strong> Technology of Microalloyed <strong>Steels</strong> ............... 251Korchynsky, M.Determination of the Kinetics of TiC PreCipitation in Ti Microalloyed <strong>Steels</strong>USing A Stress Relaxation Technique .................................... 253Liu, W.J.; Jonas, J.J.VI


Microstructural Strengthening Mechanism in High StrengthLow Alloy <strong>Steels</strong> .................................................... 259Araki, T.The Effects of Residual Vanadium in Panzhihua Rail <strong>Steels</strong> . ................ . 273Chen Mengzhe; Li Jing; Chen Cui juan; Ke Jun; Wang XingtaiHall-Petch Analyses of Nb-V Microalloyed SteelControlled-Rolled in the Two-Phase ( " - 0


SteelmakingAdvanced <strong>HSLA</strong> Steelmaking Technologies at Nuova Italsider,Taranto Works . ...................................................... 387Arno, M.; De Lisi, M.; Petrucci, M.; Petti, C.Thyssen Stahl AG's <strong>Metallurgy</strong> for the Production of <strong>HSLA</strong> <strong>Steels</strong> ........... . 397Hammer, R.; Hoffken, E.; Simon, R. W.Experience in the Metallurgical Design <strong>and</strong> Production of<strong>HSLA</strong> <strong>Steels</strong> in a Developing Country-Brazil ............................ . 407Bordingnon, P.J.P.; Schiesari, J.R.P.; de Oliveira, E.O.Direct Alloying with Vanadium Slag in Converter Steelmaking ............... 423Liu Xiaocheng; Yin Yan; Huang WudiControl of Non-Metallic Inclusions by Ladle Injection of Ca-Si Powder ........ . 431Zhi Shui; Zhang DemingAdvanced Technologies for Surface Quality of ContinuouslyCast <strong>HSLA</strong> Steel Slabs ............................................... 439Kawasaki, M.; Marukawa, K; Nakai, K.; Watanabe, T.; Nakajima, KEffect of Niobium on Continuous Casting SolidificationStructures of <strong>HSLA</strong> <strong>Steels</strong> ............................................ 445Zhang Hongtao; Pottore, N.; Garcia, C.I.; Burke, M.G.; DeArdo, AJ.Pipe <strong>and</strong> Tubular <strong>Metallurgy</strong>Development of High Strength <strong>Steels</strong> for Structural <strong>and</strong>Line Pipe <strong>Applications</strong> Through Highly Controlled Processes . .............. . 457Bufalini, P.; Buzzichelli, G.; Pontremoli, M.; Aprile, A; Jannone, C.; Pozzi, ANew High-Strength Large-Diameter Pipe <strong>Steels</strong> ........................... 467Hof, W.M.; Graf, M.K; Hillenbr<strong>and</strong>, H.-G.; Hoh, B.; Peters, P.AHigh Strength Pipeline <strong>Steels</strong> for Arctic <strong>and</strong> Sour EnvironmentProcessed under Non-Severe Rolling Conditions . ........................ . 475Hulka, K; Heisterkamp, F.; Jones, B.Low Carbon- Ti-B-Line Pipe Steel by Accelerated Cooling Process . .......... . 485Nozaki, N.; Yamura, T.; Hashimoto, T.; Komizo, Y.; Sawamura, T.; Nakatsuka, Y.Application of Miocroalloyed <strong>Steels</strong> to the Productionof Seamless Line Pipe <strong>and</strong> OCTG ...................................... . 493Posdena, H.; Pagani, M.A; Fitzsimons, G.Influence of Thermomechanical Rolling of <strong>HSLA</strong>Steel Plates on Mill Production <strong>and</strong> Design .............................. . 507Lederer, AVIII


0633Accelerated Cooling of Plates with Even Temperature in all Directions 0 0 0 0 0 0 0 0Barozzi, S.; Bognin, G.; Con tursi, V.M.; Borsi, P.; Ghersi, Mo; Tripepi, M.; Aprile, A;De Florio, G.; Janone, C.Recent Developments in Heavy Section Steel Plates for Offshore Structures 0Tomita, Yo; Yamaba, R.; Okamoto, K.; Aihara, S.; Haze, T.; Ito, K0 0641The Mechanical Properties <strong>and</strong> Microstructure of Vanaduim, MolybdenumSteel Plates <strong>and</strong> Strip for X80 <strong>and</strong> X90 Spiral Pipes 0Sage, AM.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0651A Study of the Effects of Vanadium, Aluminum <strong>and</strong> Nitrogenon the Properties <strong>and</strong> Weldability of Low Carbon <strong>Steels</strong> 0Sage, AM.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 657Basic Ideas on the Development of Ti-B-Low N 50 kg/mm2 Steelfor Large Heat Input Welding 0/toh, K; Mimura, H.; Matsuda, S.; Yamamoto, K; Kawashima, Y.;Ohno, K; Okamura, Y.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0669Characterization of Precipitates <strong>and</strong> Grain Growthin Simulated HAZ Thermal Cycles of Ti-Nb Bearing Steel Weldments 0Suzuki, S.; Weatherly, G.C.Toughening <strong>and</strong> Embrittling of Si-Mn-V <strong>Steels</strong> in the Quenched <strong>and</strong> LowTemperature Tempered Condition 0Liang U-Ya; Yang Rang0 0 0 0 0 0 0 0 06750 0 0 0 0 0 0 0 • 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0683Plate ROiling of <strong>HSLA</strong> <strong>Steels</strong> with Control of Microstructure 0A nelli, £.; Ghersi, M.; Mascanzoni, A; Paolicchi, M.; Aprile, A; Granato, F.;Liguori, G.; Rizzo, G.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0693The Metallurgical Factors Influencing the Properties of Low Alloy <strong>Steels</strong> forHigh-Temperature Service 0Hashimoto, K; /toh, K.; Otoguro, Y.; Yamaba, R.; Kikutake, T.; Mimura, H.0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 06990709Effect of Controlled Cooling on the Strength <strong>and</strong> Toughness of C-Mn Steel 0 0 0 0Liang Tian; Jin Langen; Huang KeqinMo-Nb <strong>Steels</strong> for X-60 to X-70 Grade Plates Produced by Conventional Rolling 00715Oakwood, T.G.; Coldren, AP.; Miyano, KThe Manufacturing of High Strength Steel Plate by the Direct-Quenching <strong>and</strong>Tempering Process 0 0 0 0 0 0 0 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 0 • 0 0 0 0 0 0 0 0 0 0 0 0 •• 0 0 0 0 0 0 0 0 0 0723Yoshinaga, H.; Watanabe, S.; Nito, N.; Nakano, N.; Suzuki, S.Development <strong>and</strong> St<strong>and</strong>ardization of Microalloyed <strong>Steels</strong> at Tata Steel 0Mohanty, S.C.; Mitra, AN.; Mukherjee, T.; Kini, U. V.0 0 0 0 0 0 0 0731Interactions Between Base Plate <strong>and</strong> Consumables in the Production of HighToughness Weldments in Offshore Structures 0Garl<strong>and</strong>, J.G.; Taylor, D.S.; Thornton, C.E.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 • 0 • 0 0 739x


Production of High Toughness Steel Plate by Low-Reheating Temperature . .... . 517Bridoux, D.; Perdrix, Ch.; Poupon, M.Some Aspects of Rolling of Microalloyed Steel Tubesby Fretz Moon Process ............................................... 521Sharma, D.P.; Hoda, B.; Dalal, A.K.; Lunawat, C.B.; Maheshwari, M.D.Plate <strong>Metallurgy</strong> <strong>and</strong> WeldabilityA New Cooling Device <strong>and</strong> Its Application inProduction of Hot Rolled High Strength Steel Sheets ...................... 529Nunokawa, T.; Hamamatsu, S.; Watanabe, K.; Kunishige, K.Properties <strong>and</strong> Weldability of Nb/Ti Offshore Platform <strong>Steels</strong> ................ 535Chipperfield, C.G.; Williams, J.G.Thermomechanical Treatment of <strong>HSLA</strong> <strong>Steels</strong>-Fundamentals <strong>and</strong> Realization .539de Boer, H.; Beenken, H.; Branscheid, P.; FloBdorf, F.J.; Haumann, W.;Hot, w.; Litzke, H.Microstructure <strong>and</strong> Mechanical Properties of <strong>HSLA</strong> Mn-Mo-V-N Steel ......... . 551Zhang Xiu-mu; Ke Guo-qing; Xia Dien-peiAdvanced <strong>Steels</strong> for Low-Temperature Service ............................ 557Imagumbia, M; Chijiiwa, R. Aikawa, N.; Nagumo, M.; Homma, H.;Matsuda, S.; Mimura, H.Production of Tough <strong>HSLA</strong> Heavy Plate <strong>Steels</strong> with a ModerateControlled ROiling Process ........................................... . 567Williams, J.G.; Killmore, C.R.; Williams, I.D.; Wood, J.A.Production Technology of Bethlehem's <strong>HSLA</strong> Plate <strong>Steels</strong>-Past, Present, <strong>and</strong> Future ............................................ . 579Abrams, H.; Paules, J.R.; Oren, E.C.; Hansen, S.S.Thermomechanical Control Processed High Toughness SteelPlates with Tensile Strength of 50 to 70 kgflmm2 for Welded Structure . ........ 591Shimizu, M.; Hiromatsu, M.; Takashima, S.; Kaji, H.; Kano, M.Properties of Niobium-Microalloyed Structural Steelas a Function of Thermomechanical Treatment ........................... 599Vollrath, L.; Schmitt-Thomas, Kh.G.Production, Microstructure <strong>and</strong> Properties of MicroalloyedHigh Strength 355 MN/m2 Grade Ship Plate . .............................. 605Li Guang-Ying; Yuan Zheng; Li Ming-You; Pu Shao-Kang; Li Ping-He; Lu Xue- YianUse of Microalloying Elements to Improve MechanicalProperties in Plates . ..................................... ; .......... . 613Lessel/s, J.Development <strong>and</strong> Production of Titanium <strong>Steels</strong> .......................... 627He Yong-KangIX


Fatigue Corrosion <strong>and</strong> Other End User RequirementsDuctile Fracture Propagation (D.F.P.) in Gas Pipelines:An Up-to-Date Survey of the "Italian Group"Activity on High Grade <strong>HSLA</strong> Pipe Materials .............................. .Bonomo, F.; Buzzichelli, G.; Demofonti, G.; Maresca, A; Nicolazzo, F.; De Lisi, A;De Vito, A; Rizzi, L.; Venzi, S.; Re, G.Specification <strong>and</strong> Fabrication of <strong>Steels</strong> for Use in Sour Hydrocarbon Pipelines .. 753Hill, R. T.Fatigue Deformation of High Strength Low Alloy <strong>Steels</strong>over the Temperature Range from 77 to 300 K . ............................ 763Bratina, w.J.; Vue, S.; Aziza, M.; Rinella, AC.The Effects of Inclusions <strong>and</strong> Hydrogen on the Through-Thickness Propertiesof Z-Plates ......................................................... 771Cheng Jianhua; Wang Zubin; Xue Vide, Wang Zufang; Zhou Bishan; Tao ShimingFatigue Crack Growth of a <strong>HSLA</strong> Steel in Seawater ........................ 777Cigada, A; Mazza, B.; Pastore, T.; Pedeferri, P.Stress Corrosion Cracking in Seawater of <strong>HSLA</strong> Steel Type API 5L X65 ....... . 785Cigada, A; Pastore, T.; Re, G.; Rondelli, G.; Vicentini, B.A 65kgf-25CrMoTi-SSCC Resisting Steel ................................. 793Zhang Heng; Xhou Nengjin; Jiang Shuqiu; Jin Tongzhe; Zhou Yunan; Huang KaiDual Phase <strong>Steels</strong>New, Cold Formable Fe/AIIC Dual Phase <strong>Steels</strong> . .......................... . 801Thomas, G.Mechanical Anisotropy of Prestrained Sheets of a Dual-Phase Steel .......... 809Sugimoto, K; Sakaki, T.; Kuramoto, H.; Miyagawa, 0.Ferritic-Martensitic-Spheroidized Cementite Triphase Sheet Steel . ........... . 817Yang, D.Z.; Matlock, D.K; Krauss, G.Effect of Prior Cold Deformation on the Kinetics ofAustenite Formation During Intercritical Annealingof Low Carbon Low Alloy Steel 14 MnNb ................................ . 823Lei, T.C.; Pan,J.Behavior During Deep Drawing of Three Qualitiesof High Tensile Strength Cold Rolled Sheets . ............................ . 831Rault, D.; Entringer, M.Microstructure <strong>and</strong> Mechanical Properties of Ultra-High-StrengthCold-Rolled Steel Sheets ............................................. 833Kinoshita, M.; Osawa, KXI


Deformation Behaviour of Si-Mn Dual-Phase <strong>Steels</strong> . ...................... . 843Wen Mubing; Ying Biqun; Chen Gianti; Liu Jia-lingComputation of Dual Phase Region in Low Alloy <strong>Steels</strong> . ................... . 851Ishida, K.; Wakakuwa, H.; Nishizawa, T.Bars, Forgings <strong>and</strong> Long ProductsMicroalloyed Ferrite-Pearlite Forging <strong>Steels</strong> with Improved Toughness . ....... . 863Lagneborg, R.; S<strong>and</strong>berg, 0.; Roberts, W.Microalloyed Forging <strong>Steels</strong>-A Worldwide Assessment .................... 875Jones, B.L.; DeArdo, AJ.; Garcia, C.I.; Hulka, K.; Luthy, H.The Interrupted Accelerated Cooling Process after Hot Rollingfor Deformed Reinforcing Bars . ....................................... . 885Ye Shunfa; Liu Kun; Shi Zehan; Chang Chunzhe; Bao Zhonghao;Zhou Guangliang; Wu JianahuanControlled Rolling <strong>and</strong> Accelerated Water Cooling ofC-Mn <strong>and</strong> Microalloyed Bars . ......................................... . 893Jarl, M.; Tjernquist, U.Mechanical <strong>and</strong> Technological Properties of Temprimar®Weldable High Strength Rebars ........................................ 901Fromman, K.; Vlad, C.M.A Comparison Between the Temprimar® <strong>and</strong> TempcoreProcesses for Production of High Strength Rebars . ....................... . 909Vfad, C.M.Advanced Techniques for the Production of <strong>HSLA</strong> Steel Products ............ 913de fa Hamette, J.Large, High Dynamically Loaded Machine Parts Producibleby the Use of Precipitation Hardened Steel .............................. . 921Sommer, R.ASheet <strong>Steels</strong>Hot-Rolled Cb-Ti <strong>and</strong> Cb-Ti-V Sheet<strong>Steels</strong> with 415 to 620 MPa Yield Strengths . .......................... , .. . 933Repas, P.E.High Strength Low Alloyed Steel Strips Today ............................ 941Brun, C.G.H.; Munier, M.J.MHot Rolled Coils for Special <strong>Applications</strong> ................................ 951DeVito, A; Masi, L.; Anel/i, £.; Cerquitel/a, A; Pontremoli, M.XII


Hot Rolled Plain Carbon Steel Sheets with aGood Combination of High Strength <strong>and</strong> Formability ...................... . 959Esaka, K.; Koyama, K.; Matsumura, Y.; Tashiro, M.High Strength Cold Rolled Sheet <strong>Steels</strong> for Automobiles ................... . 969Matsuoka, T.; Okamoto, A; Sugisawa, S.; Nakai, S.Metallurgical Consideration on High Strength Steel Sheetsfor Automobiles in Nippon Steel Corporation ............................. 977Takechi, H.; Akisue, O.High Strength Deep-Drawing Steel Sheet Obtained byBoth Static <strong>and</strong> Continuous Annealing Processes ........................ . 985Antoniucci, P.L.; Di Pace, L; Ricci Bitti, R.; Bassano, G.; De Vito, A; Gazzo, C.The Development of a Vanadium-Titanium-RareEarth Treated Microalloyed Deep Drawing Steel ....................... . ... 993Zhao Suoshen; Cao Xueren; Gu Jianzhong; Han OiyongThe Process Technology <strong>and</strong> <strong>Metallurgy</strong> of High Convection BellAnnealing for Steel Strip Coils ......................................... 999Lochner, H.; Perrin, AR.Development of Nb Added Ferrite-Bainite <strong>Steels</strong><strong>and</strong> Their Application to Wheels . ..................................... . 1011Hashimoto, S.; Sudo, M.; Hosoda, T.; Shibata, Z.CONFERENCE SUMMARY AND CLOSING REMARKS ..................... . 1021Gray, J.M.; T. KoCLOSING REMARKS ................................................ 1027Oi Yangjun, Minister of the Metallurgical IndustryXIII--~---- -~-----~-----

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