COST 507 - Repositório Aberto da Universidade do Porto

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1000 900 Ι ο 700 — 600 500 400 Fig.2 Polythermal section of Cu-Mg-Zr phase diagram between compositions 90 wt.% Cu, 10 wt.% Zr to 93 wt.% Cu, 7 wt.% Mg - 212 -
EXPERIMENTAL INVESTIGATION OF THE CUMGZR SYSTEM. Baikov Institute of Metallurgy, Moscow, Russia Helsinki University of Technology, Espoo, Finland CuMgZr alloys (50 alloys) were prepared by arc melting under He atmosphere (for alloys with up 10 wt.x Mg) and by induction melting under Ar atmosphere (for alloys with 1050 wt.ss Mg). The alloys were rolled by the height reduction of 50X, annealed at 500°C for 100 h, quenched and studied by microcopy analysis, DTA, microhardness measurements, Xray analysis and microprobe Xray spectral analysis. Data of the microprobe Xray spectral analysis showed that: there is a ternary compound called τ with composition of 54wt.3SCu, 10wt.X Mg, 36wtX Zr (50at.S Cu, ~25at.% Mg, ~25atX Zr) and formulae ~Cu„MgZr; this compound is in equilibrium with binary compounds Cu c ,Zr.., Cu„Mg and CuMg„ (see tabl.1, Fig.1); 01 14 ¿. á - the binary compounds Cu c Zr and Cu CH Zr H . dissolve up to 1wt.% O O1 14 (3at.X) Mg. the binary compound Cu„Mg dissolve up to 4 wt.SS (2.5at.X) Zr. Data of the Xray diffraction analysis (the diffraction patterns are shown in Fig.2) confirm the presence of the ternary compound. So, there are some unidentified peaks besides those of CUg.Zr.. and Cu„Mg, and these peaks can not be recognized as the peaks of the other possible in this system binary compounds. Therefore, it is naturally to suppose that this peaks belong to the unknown ternary compound τ. The <strong>da</strong>ta of the microstructure analysis (see Fig.3after annealing at 500°C and Fi.g.5after DTA) showed the phases formed in the studied area of concentration. The phases differ according to their shape and color. After etching of the metallographic specimens with the 30X solution of (NH.)„S„0 o the phase Cu E Zr is 4 d £. o o seen as the thin plates having blue color, and Cu„Mg has black color. The phase CUg.Zr.. . forms crystals of regular shape and white color. The phase τ rounds the CUg.Zr. crystals. It is of grey or light brown color. The isothermal section at 500°C was constructed (Fig.4). DTA was carried out for all prepared alloys. One polythermal section (between Cu10wt.X Zr and Cu7wt.x Mg) was constructed (Fig.6), as we11. 213
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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.
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Summary of final report Directional
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calculate the thermodynamic mixing
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Introduction It is the aim of this
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Thermodynamic evaluations for high
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Figure 5 presents the calculated li
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There is a complete lack in the lit
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a.B5 ø.ia 0.15 0.20 0.25 0.30 0.35
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700 [53Phi] 800 +[90Kuz21 ]iquld a
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Thermodynamic Assessments, Experime
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AIN and TiNi_ x is also given. Vari
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satisfied the three requirements of
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84Bey R. Beyers, R. Sinclair, and M
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Material and Methods 2.1 Fabricatio
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3.4 Electronmicroscopy (SEM) and X-
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Tab. 3: Density of the Ti20Albase
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Tab.5. continued TÌ20A1 5CulONi Ti
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Fig. 3: ESMA and Xray diffraction
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Fig.7: Wetting angle of Ti 15A1 lOC
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Thermophysical Properties of Light
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Tab.2 Chemical composition of terna
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700 (AI)+AIFeS¡«_600 KS1275.1 l
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4.2 Thermal conductivity of industr
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4.3 AlSiZn alloys Electrical re
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94Jar/Bra G.Jaroma-Weiland, R.Brand
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MgZn9 (C 14) and Mg2Zn u in the Al
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The three Laves phases were describ
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References [13Ege] G. Eger, Z. Meta
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0.30 0.35 0.40 0.45 0.50 mole fract
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□ [48Koe] 600 500 400 0 0.1 0
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MggZn,, this work □ Single phase,
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Temperatures in °C 0.05 0.10 mole
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Table 2 : Alloy compositions Alloy
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All. Dy 50 Cpexp °C Cpadd Table 5
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Zn ¿Kl Si Fig. 2 : Position of the
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22.5 ■■ 7.5 Temperature ICI Tem
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.to 2.5 "lõõ soo iÍOõ dOõ rtõ
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GR2 Differential Scanning Calorimet
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Time (x10 3 sec) Fig. 1. DSC Thermo
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solidification. It can be seen that
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4. Conclusions Differential scannin
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COST 507 - ROUND Π UNIT II SEZIONE
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[96Sac] The Rrich regions of the
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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
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
Page 173 and 174: Table 1. Review of the ternary phas
Page 175 and 176: L) Liq+bcc=FeSi+t_1 M) Liq+t 1=FeSi
Page 177 and 178: Extrapolations based on Ti-C-N S3 B
Page 179 and 180: value has been accepted in all thre
Page 181 and 182: with high precision whereas Jonsson
Page 183 and 184: only fit the hightemperature asym
Page 185 and 186: Jonsson combined his descriptions o
Page 187 and 188: Table II. Solubility product of TiC
Page 189 and 190: Ti-C, Z.Metallkd. 86 (1995) 5 319
Page 191 and 192: 1000 1500 2000 2500 3000 Τ (K) Fig
Page 193 and 194: o Oí o 3 4 5 6 7
Page 195 and 196: M^øD^ O Kelley(1944) • Kelley an
Page 197 and 198: — cale, with Dumitrescu (1997) -
Page 199 and 200: € gfc-π m-, .-π-, π-π .-saa J
Page 201 and 202: +graph 0 TiN 0.2 0.4 0.6 X TiC 0.8
Page 203 and 204: Binder et al (1992) TiN 1423 K ■
Page 205 and 206: 0.08 600°C 700°C 800°C 900°C 10
Page 207 and 208: [59Sto]: Ä600°C □ 70D°C O8Q0°
Page 209 and 210: 2000 Cale, with Saunders (1997) —
Page 211 and 212: An Experimental Investigation of th
Page 213 and 214: An Experimental Investigation of th
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Page 219 and 220: Fig.1 SEM micrographs of CuMgZr
Page 221 and 222: ■ 888 24 HSM^«" 16—19 3 À I
Page 223 and 224: Thermodynamic Evaluations of the Al
Page 225 and 226: Fcc_Al aves_C15 ONU ΔΝ12 αΝ13
Page 227 and 228: 2.2 Assessment The optimisation of
Page 229 and 230: 0.50 0.45 CulOZr7/ 0. 40 Or ^ 0.3
Page 231 and 232: References [71Kri] Kripyakevich, P.
Page 233 and 234: Kejun Zeng and Marko Hämäläinen,
Page 235 and 236: for detennining phase boundary and
Page 237 and 238: Table 2 Al-Fe-Mn results wt%Fe 0.5
Page 239 and 240: •00 Γ Ι I I I ~ LIQUID S^ 7iO
Page 241 and 242: the observed A2-B2 ordering. This p
Page 243 and 244: 1473K Ahmed & Flower [94 Ahmi] 0.2
Page 245 and 246: 900K Paruchuri & Massalski [91Par]
Page 247 and 248: BCC_B2#2 TI3RL TIPL BCC B2#2 TIRL
Page 249 and 250: 0.2 0.3 0.4 0.5 X(LIQ,V) Figure 15
Page 251 and 252: 1 Introduction and Overview of the
Page 253 and 254: at least 95% by Fe, possibly 99%, a
Page 255 and 256: 8 References 43Phi H W L Phillips,
Page 257 and 258: 1050 1000 Isopleth, Al - Si - 4 wt
Page 259 and 260: Al-Mn-Si 873 K 0.90 Liquid 0.80 0.7
Page 261 and 262: A Thermochemical Assessment of Data
Page 263 and 264: certainly due to the appearance of
Page 265 and 266: 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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