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稀土Er对A356合金组织与性能的影响

Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2018-01-01

Journal: 特种铸造及有色合金

Included Journals: CSCD

Volume: 38

Issue: 3

Page Number: 312-315

ISSN: 1001-2249

Key Words: Er;A356合金;微观组织;力学性能

Abstract: 利用金相显微镜、扫描电镜和拉伸试验机研究了Er元素对A356合金组织与性能的影响,并分析了其变质机制.结果表明,Er元素可以改善与共晶Si的形貌,得到短杆状共晶Si.当Er含量为0.3%时合金的力学性能最好.经T6热处理后,合金抗拉强度提高了31.2%,伸长率提高了233%.

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