COST 507 - Repositório Aberto da Universidade do Porto

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Fig.9: Wetting behaviour of TÌ25A1 lOCulONi on TLAl-substrate Fig.10: SEM-micrograph of the joining zone fromthe sample above [at.-%] Al Ti Nb Cr Cu Ni Pos.l Pos.2 40,5 32 54 57 1,9 2 1,3 2,5 1,2 2,9 0,6 2,3 Pos.3 Pos4 43 37 51 40 1,4 1 0,8 1,5 1,7 8 1 12 - 102 -
Thermophysical Properties of Light Metal Alloys D9 G.Jaroma-Weiland 1 , R.Brandt 1 , P.Relpert 2 , G.Neuer 1 'Forschungsinstitut für Kerntechnik und Energiewandlung e.V., Stuttgart, Germany 2 Kolbenschmidt AG, Neckarsulm, Germany Abstract In the factual data base THERSYST experimental data on therrnophysical properties of Al-, Mg- and Ti-based alloys have been stored. Thermal conductivity and hardness of six industrial Al-Si-based alloys have been intensively investigated as a function of temperature and time. From these measurements the phenomenological correlation between thermal conductivity and hardness has been found. Electrical resistivity were determined on 11 ternary Al-Si-Zn alloys. For specimens with Zn-content greater than 20wt% a phase transition was observed around 290°C. 1 Introduction Due to the low density of the light metal alloys they are gradually becoming more and more attractive. For optimum application the short and long term material properties of the alloys, such as strain and stress relation, fatigue strength, wear and corrosion resistance, etc. must be known. Data on thermophysical properties (thermal conductivity, thermal diffusivity, electrical resistivity, specific heat capacity and thermal expansion) of these alloys are of interest in two aspects: Many components are exposed to temperatures up to 400°C, resulting in generation of stationary and transient temperature fields. The knowledge of the temperature dependence of the thermal conductivity enables the calculation of the temperature distributions. Data for higher temperatures Including the so called "mushy" zone and the melting range are necessary for numerical solidification models used in the casting industry. Therefore it was one of the aims of the European research programme COST507 to study transport properties of light metal alloys to provide reliable experimental data and to characterize each alloy family. The experimental data on thermophysical properties available in the literature have been stored in the factual data base THERSYST [89Neu/Bra]. Experimental investigations have been performed at selected industrial Al-Si-based casts. Thermal conductivity and hardness have been measured as function of temperature and time. We attempted to find a correlation between these properties in order to reduce the expenses of thermal conductivity measurements in future. Electrical resistivity was measured on ternary Al-Si-Zn alloys. The thermodynamic evaluation of this system has been performed during 1st round of COST507-action - 103 -
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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
Page 57 and 58: Al Phase Relations in the Aluminium
Page 59 and 60: oundaries of the single phase regio
Page 61 and 62: Table 1 : Crystallographic Data of
Page 63 and 64: order to facilitate the evaluation
Page 65 and 66: (especially around 33 at% Mg) in or
Page 67 and 68: 3.System Ti-Sn-Al-N. The investigat
Page 69 and 70: 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: Fig.7: Wetting angle of Ti 15A1 lOC
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 and 122: The three Laves phases were describ
Page 123 and 124: References [13Ege] G. Eger, Z. Meta
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
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2Contributions: oral or posters p
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1996 REPORT 2 s ' PART: ACTIVITY CA
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[96Sei] Excess Gibbs energy coeffic
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List of publications in the framewo
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Proc. :7 th Meeting on "Syntheses a
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2.1 Solid solubility measurements T
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eviews by Rivlin and Raynor [81 Riv
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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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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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