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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Cold-rolling on Mechanical Properties and Microstructure of an Al-12%Si-0.2%Mg Alloy
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Effect of Cold-rolling on Mechanical Properties and Microstructure of an Al-12%Si-0.2%Mg Alloy

机译：冷轧对Al-12％Si-0.2％Mg合金力学性能和组织的影响

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摘要

Effect of multi-pass cold-rolling on the mechanical properties and microstructure of a near-eutectic Al-12%Si-0.2%Mg casting alloy was investigated. Optical microscopy, SEM, and TEM were employed to resolve the as-rolled microstructure, and the microstructure of samples after aging treatment. It has been found that Brinell hardness increases considerably with rolling reduction ratio; and further annealing leads to a remarkable drop in hardness. Two mechanisms, namely precipitation hardening and recovery softening, were found to develop simultaneously in the subsequent aging treatment following cold rolling. In contrast, recovery softening dominated the aging of cold-rolled specimen with prior intermediate annealing. Tensile properties were also performed to measure the effect of cold rolling and subsequent aging treatment.
机译：研究了多道次冷轧对近共晶Al-12％Si-0.2％Mg铸造合金的力学性能和组织的影响。用光学显微镜，SEM和TEM解析铸态组织和时效处理后的样品组织。已经发现，布氏硬度随着压下率的增加而显着增加。进一步的退火会导致硬度显着下降。发现在冷轧后的后续时效处理中会同时形成两种沉淀机理，即沉淀硬化和恢复软化。相反，在先前的中间退火下，恢复软化主导了冷轧试样的时效。还进行了拉伸性能以测量冷轧和随后的时效处理的效果。

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