The effect of main alloying elements on the physical properties of Al-Si foundry alloys

被引：100
作者：
Stadler, F. [1 ]
Antrekowitsch, H. [1 ]
Fragner, W. [2 ]
Kaufmann, H. [3 ]
Pinatel, E. R. [4 ,5 ]
Uggowitzer, P. J. [6 ]
机构：
[1] Univ Leoben, Inst Nonferrous Met, A-8700 Leoben, Austria
[2] AMAG Casting GmbH, A-5282 Ranshofen, Austria
[3] AMAG Austria Metall AG, A-5282 Ranshofen, Austria
[4] Univ Torino, Dipartimento Chim, I-10125 Turin, Italy
[5] Univ Torino, NIS, I-10125 Turin, Italy
[6] ETH, Lab Met Phys & Technol, Dept Mat, CH-8093 Zurich, Switzerland
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 560卷
关键词：
Al-Si foundry alloy; Compositional variation; Thermal conductivity; Thermal expansion; Thermal shock resistance; THERMAL-CONDUCTIVITY; STRENGTH; NI;
D O I：
10.1016/j.msea.2012.09.093
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study we describe the effect of the main alloying elements Si, Cu and Ni on the thermal properties of hypoeutectic and near-eutectic Al-Si foundry alloys. By means of systematic variations of the chemical composition, the influence of the amount of 'second phases' on the thermal conductivity, thermal expansion coefficient, and thermal shock resistance is evaluated. Thermodynamic calculations predicting the phase formation in multi-component Al-Si cast alloys were carried out and verified using SEM, EDX and XRD analysis. The experimentally obtained data are discussed on a systematic basis of thermodynamic calculations and compared to theoretical models for the thermal conductivity and thermal expansion of heterogeneous solids. (C) 2012 Elsevier B.V. All rights reserved.
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页码：481 / 491
页数：11
相关论文
共 30 条
[1]  
[Anonymous], 1904, NATURE
[2]  
Chawla N., 2006, Metal matrix composites
[3]   Study on thermal expansion of intermetallics in multicomponent Al-Si alloys by high temperature X-ray diffraction [J].
Chen, C. -L. ;
Thomson, R. C. .
INTERMETALLICS, 2010, 18 (09) :1750-1757
[4]  
Cho C.Y., 1998, THERMAL EXPANSION SO
[5]   The effect of alloy addition on the high temperature properties of over-aged Al-Si(CuNiMg) cast alloys [J].
Cho, Young-Hee ;
Joo, Dae-Heon ;
Kim, Chul-Hyun ;
Lee, Hu-Chul .
ALUMINIUM ALLOYS 2006, PTS 1 AND 2: RESEARCH THROUGH INNOVATION AND TECHNOLOGY, 2006, 519-521 :461-466
[6]  
Davidge R., 1979, MECH BEHAV CERAMICS
[7]  
Egry I., 2010, High Temp-High Press, V38, P343, DOI [10.1007/BF02945937, DOI 10.1007/BF02945937]
[8]   ANALYSIS OF COMPOSITE-MATERIALS - A SURVEY [J].
HASHIN, Z .
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME, 1983, 50 (03) :481-505
[9]  
HATCH JE, 1988, ALUMINIUM PROPERTIES
[10]  
Hull R., 1999, PROPERTIES CRYSTALLI
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