Effect of temperature on mechanical properties of Al0.5CoCrCuFeNi wrought alloy
Effect of temperature on mechanical properties of Al0.5CoCrCuFeNi wrought alloy
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DOI：
10.1016/j.jallcom.2009.10.088
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发表时间：
2010-02-04
影响因子：
6.2
通讯作者：
Yang, Chih-Chao
中科院分区：
文献类型：
--
作者：
Tsai, Che-Wei;Tsai, Ming-Hung;Yang, Chih-Chao
本工作研究了从环境温度到900℃的温度对不同变形状态的Al0.5CoCrCuFeNi合金力学性能的影响。与304钢和Ti-6Al-4V相比，该合金在冷轧状态和900，C-退火态均表现出良好的轧制加工性和室温强度和伸长率的优良组合。然而，轧制和退火态样品在300℃和600℃之间都表现出中等的脆性。断口、析出相和时效硬化反应的研究揭示了脆化机制：从过饱和基质中析出的体心立方相颗粒和300℃到600℃之间的富铜相使合金变得更硬但更脆。(C)2009爱思唯尔B.V.保留所有权利。
This work studies how temperature, from the ambient temperature to 900 degrees C, affects the mechanical properties of Al0.5CoCrCuFeNi alloys in different wrought states. The alloy displayed a good workability by rolling and an excellent combination of strength and elongation at ambient temperature in both the as-cold-rolled and the 900,C-annealed states as compared to those of 304 steel and Ti-6Al-4V. However, both as-rolled and as-annealed samples displayed intermediate embrittlement between 300 degrees C and 600 degrees C. The investigation of fractography, precipitate phases and the aging hardening response of the samples revealed the embrittlement mechanism: the BCC phase particles that precipitated from the supersaturated matrix and Cu-rich phases between 300 degrees C and 600 degrees C rendered the alloy of interest harder but more brittle. (C) 2009 Elsevier B.V. All rights reserved.