COST 507 - Repositório Aberto da Universidade do Porto

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The experimental results show that Zn subsütutes Al in AiMg binary phases and Al substitutes Zn in MgZn binary phases to several mol%, respectively. Therefore these binary phases with ternary solubilities were modelled as following: 0AlMg: Mg8 9 (Al,Zn) 14 o eAlMg: Mg23(Al,Zn) 30 7AlMg: Mgio(Mg,Al,Zn) 2 4(AI,Mg,Zn) 2 4 Mg 2 Zn n : Mg 2 (Zn,Al)n MgZn 2 : (Mg,Al,Zn)(Zn,Al,Mg) 2 Mg 2 Zn 3 : Mg 2 (Zn,Al) 3 MgZn: Mgi2(Zn,Al) 13 The major constituents are denoted in boldface. The ternary parameters of the τ- and (¿phases as well as the ΑΙMg and MgZn phases were adjusted using published data reviewed by Petrov [93Pet] and the new experimental results. The liquid phase was described as substitutional solid solution after the RedlichKistcr Muggianu formalism. The measured partial enthalpies of the liquid [97Kim] do not exactly agree with this description, however, may be tolerated within the accuracy of the measurements. Therefore no ternary parameters were introduced for the Gibbs energy description of the liquid. Using the optimized ternary parameters the ternary AlMgZn system was calculated. The results are shown in Fig. 10 to 15 and compared with the experimental values. This optimization was presented at the conference " Thermodynamics of Alloys" at Marseille, Sep. 1996 and is in preparation for thermochimica acta. 2.8 The AlCuMgZn System It was started to combine these ternary descriptions with the assessments of AlCuMg from Aachen and AlCuZn from Leuven to a full description of the quaternary AlCu MgZn system. Acknowledgement Financial support by the German "Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie" (Contract 03K7208 0) is gratefully acknowledged. 118
References [13Ege] G. Eger, Z. Metallkd., 1913, 4, 28127. [26San] W. Sander, Z. Anorg. Chem., 1926,154, 144151. [33SaI] P. Saldau and M. Zamotorin, Z. Anorg. Chem., 1933, 213, 377382. [40Kuz] V. G. Kuznetsov and E. S. Makarov, Izv. Sekt. Fiz.Khim. Anal., 1940, 13, 11771190. [43Sie] G Siebel, Z. Elektrochem., 1943, 49, 218221. [47Str] D. J. Strawbridge, W. HumeRothery and Α. T. Little, J. Inst. Met., 1947, 74, 191225. [48Koe] W. Köster and F. Müller, Z. Metallkd., 1948, 39, 352359. [50Mik] V. I. Mikheeva and O. N. Kryukova, Izv. Sekt. Fiz.Khim. Anal., Akad. Nauk. SSSR., 1950, 20, 7693. [50Nis] H. Nishimura and Y. Murakami, Mem. Fac. Eng. Kyoto Univ., 1950,12,119 128. [52Ber] G. Bergman, JL Waugh and L. Pauling Nature, 1952,169, 10571058. [52Lie] K. H. Liester and H. Witte, Z. Metallkd., 1952, 43, 396401. [64Kin] R. C. King and O. J. Kleppa, Acta Metall., 1964,12, 8797. [72Pre] B. Predel and H. Ruge, Mater. Sei. Eng., 1972, 9, 141151. [79Pre] B. Predel, H. Bencker, W. Vogelbein and M. Ellner, J. Solid State Chem., 1979,28,245257. [81Sch] E. Schürmann, E. Voss, Giessereiforschung, 1981, 33, 4346. [90Mas] T.B. Massalski, (Ed.) Binary Alloy Phase Diagrams, ASM, Metals Park, Ohio, 1990. [90Sau] N. Saunders Calphad, 1990,14, 6170. [91Cou] C. A. Coughanowr, I. Ansara, R. Luoma, M. Hämäläinen and H. L. Lukas, Z. Metallkd., 1991, 82, 574582. [92Aga] R. Agarwal, S. G. Fries, H. L. Lukas, G. Petzow, F. Sommer, T. G. Chart and G. Effenberg, Z. Metallkd., 1992, 83, 216223. [92Cha] N. Chakraborti and H. L. Lukas, Calphad, 1992,16, 7986. [92Sau] N. Saunders, private communication., 1992. [93Cos] J. G. Costa Neto, S. G.Fries, H. L. Lukas, CALPHAD, 1993,17, 219228. [93Kow] M. Kowalski and P. J. Spencer, J. Phase Equilibria, 1993,14, 432438. [93Pet] D. A. Petrov, in Ternary Alloys, Vol.7, G. Petzow G. Effenberg, ed., VCH Verlag, Weinheim, Germany, 1993. 119
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European Commission COST European c
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European Commission COST European c
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Preface The Final Workshop of the C
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COST 507 STRUCTURE Measurement and
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GRl: Mirtee S.A., Volos Mr.P.Polati
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D9 Dll Fl GR2 II NI S3 SF1 "Thermop
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A Summary of the COST 507 Action an
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Aluminium-based systems Titanium-ba
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An Example using the COST 507 Datab
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Appendix COST 507: Some Key Meeting
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Al - 0.5 Fe, 1 Mg, 0.8 Mn, 0.2 Si (
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Fig 4 Aluminium beverage cans. The
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Fig 6 High pressure compressor vane
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INTRODUCTION All of us are aware of
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In the interaction with materials a
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There was a first warning more than
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Some time ago, the well-known physi
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Today there is a whole range of ins
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The dimension of this reservoir inc
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REFERENCES [ 1 ] G. Petzow, "Man, M
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Trends in Application of Materials
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Raw Materials The Cycle of Material
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i LÌ i.'»Af·· iù^ VV.V.X. iTTa
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1600 OJ 1200 .« 1100 d 1000 900 Si
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Al Phase Relations in the Aluminium
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oundaries of the single phase regio
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Table 1 : Crystallographic Data of
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order to facilitate the evaluation
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(especially around 33 at% Mg) in or
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3.System Ti-Sn-Al-N. The investigat
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6) N.Durlu, U.Gruber, M.Pietzka, H.
Page 71 and 72: Summary of final report Directional
Page 73 and 74: calculate the thermodynamic mixing
Page 75 and 76: Introduction It is the aim of this
Page 77 and 78: Thermodynamic evaluations for high
Page 79 and 80: Figure 5 presents the calculated li
Page 81 and 82: There is a complete lack in the lit
Page 83 and 84: a.B5 ø.ia 0.15 0.20 0.25 0.30 0.35
Page 85 and 86: 700 [53Phi] 800 +[90Kuz21 ]iquld a
Page 87 and 88: Thermodynamic Assessments, Experime
Page 89 and 90: AIN and TiNi_ x is also given. Vari
Page 91 and 92: satisfied the three requirements of
Page 93 and 94: 84Bey R. Beyers, R. Sinclair, and M
Page 95 and 96: Material and Methods 2.1 Fabricatio
Page 97 and 98: 3.4 Electronmicroscopy (SEM) and X-
Page 99 and 100: Tab. 3: Density of the Ti20Albase
Page 101 and 102: Tab.5. continued TÌ20A1 5CulONi Ti
Page 103 and 104: Fig. 3: ESMA and Xray diffraction
Page 105 and 106: Fig.7: Wetting angle of Ti 15A1 lOC
Page 107 and 108: Thermophysical Properties of Light
Page 109 and 110: Tab.2 Chemical composition of terna
Page 111 and 112: 700 (AI)+AIFeS¡«_600 KS1275.1 l
Page 113 and 114: 4.2 Thermal conductivity of industr
Page 115 and 116: 4.3 AlSiZn alloys Electrical re
Page 117 and 118: 94Jar/Bra G.Jaroma-Weiland, R.Brand
Page 119 and 120: MgZn9 (C 14) and Mg2Zn u in the Al
Page 121: The three Laves phases were describ
Page 125 and 126: 0.30 0.35 0.40 0.45 0.50 mole fract
Page 127 and 128: □ [48Koe] 600 500 400 0 0.1 0
Page 129 and 130: MggZn,, this work □ Single phase,
Page 131 and 132: Temperatures in °C 0.05 0.10 mole
Page 133 and 134: Table 2 : Alloy compositions Alloy
Page 135 and 136: All. Dy 50 Cpexp °C Cpadd Table 5
Page 137 and 138: Zn ¿Kl Si Fig. 2 : Position of the
Page 139 and 140: 22.5 ■■ 7.5 Temperature ICI Tem
Page 141 and 142: .to 2.5 "lõõ soo iÍOõ dOõ rtõ
Page 143 and 144: GR2 Differential Scanning Calorimet
Page 145 and 146: Time (x10 3 sec) Fig. 1. DSC Thermo
Page 147 and 148: solidification. It can be seen that
Page 149 and 150: 4. Conclusions Differential scannin
Page 151 and 152: COST 507 - ROUND Π UNIT II SEZIONE
Page 153 and 154: [96Sac] The Rrich regions of the
Page 155 and 156: List of publications in the framewo
Page 157 and 158: 2Contributions: oral or posters p
Page 159 and 160: 1996 REPORT 2 s ' PART: ACTIVITY CA
Page 161 and 162: [96Sei] Excess Gibbs energy coeffic
Page 163 and 164: List of publications in the framewo
Page 165 and 166: Proc. :7 th Meeting on "Syntheses a
Page 167 and 168: 2.1 Solid solubility measurements T
Page 169 and 170: eviews by Rivlin and Raynor [81 Riv
Page 171 and 172: inaires. Thesis, Universite Scienti
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Table 1. Review of the ternary phas
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L) Liq+bcc=FeSi+t_1 M) Liq+t 1=FeSi
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Extrapolations based on Ti-C-N S3 B
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value has been accepted in all thre
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with high precision whereas Jonsson
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only fit the hightemperature asym
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Jonsson combined his descriptions o
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Table II. Solubility product of TiC
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Ti-C, Z.Metallkd. 86 (1995) 5 319
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1000 1500 2000 2500 3000 Τ (K) Fig
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o Oí o 3 4 5 6 7
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M^øD^ O Kelley(1944) • Kelley an
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— cale, with Dumitrescu (1997) -
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€ gfc-π m-, .-π-, π-π .-saa J
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+graph 0 TiN 0.2 0.4 0.6 X TiC 0.8
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Binder et al (1992) TiN 1423 K ■
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0.08 600°C 700°C 800°C 900°C 10
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[59Sto]: Ä600°C □ 70D°C O8Q0°
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2000 Cale, with Saunders (1997) —
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An Experimental Investigation of th
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An Experimental Investigation of th
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211 -
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EXPERIMENTAL INVESTIGATION OF THE C
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Fig.1 SEM micrographs of CuMgZr
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■ 888 24 HSM^«" 16—19 3 À I
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Thermodynamic Evaluations of the Al
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Fcc_Al aves_C15 ONU ΔΝ12 αΝ13
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2.2 Assessment The optimisation of
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0.50 0.45 CulOZr7/ 0. 40 Or ^ 0.3
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References [71Kri] Kripyakevich, P.
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Kejun Zeng and Marko Hämäläinen,
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for detennining phase boundary and
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Table 2 Al-Fe-Mn results wt%Fe 0.5
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•00 Γ Ι I I I ~ LIQUID S^ 7iO
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the observed A2-B2 ordering. This p
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1473K Ahmed & Flower [94 Ahmi] 0.2
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900K Paruchuri & Massalski [91Par]
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BCC_B2#2 TI3RL TIPL BCC B2#2 TIRL
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0.2 0.3 0.4 0.5 X(LIQ,V) Figure 15
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1 Introduction and Overview of the
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at least 95% by Fe, possibly 99%, a
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8 References 43Phi H W L Phillips,
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1050 1000 Isopleth, Al - Si - 4 wt
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Al-Mn-Si 873 K 0.90 Liquid 0.80 0.7
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A Thermochemical Assessment of Data
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certainly due to the appearance of
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Materials Science Centre, November
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1400 Al-Mn Fig 2 Calculated partial
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1000 ι AlMn I Ι 950 Liquid E ω
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Al-Fe-Mn 843 K 0.90 0.80 0.70 0.60
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AlFeMn section at 2 wt% Mn co
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0.50 0.45 0.40-1 LU £ 0.35 LU 0.30
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European Commission EUR 18171 —CO
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NOTICE TO THE READER Information on
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