预拉伸对X2A66铝合金蠕变时效力学性能与微结构的影响Effect of pre-stretching on mechanical properties and microstructure of X2A66 aluminum alloy during creep aging
熊纯;江茫;徐进军;
摘要(Abstract):
通过力学性能测试和显微组织观察,分别研究人工时效、蠕变时效以及预拉伸蠕变时效热处理工艺对X2A66铝锂合金薄板力学性能和组织结构的影响。结果表明:与人工时效相比,蠕变时效过程改变了合金时效析出行为并恶化合金力学性能;但蠕变时效前进行预拉伸处理,能够在稍微降低伸长率的情况下显著提升合金屈服和抗拉强度。
关键词(KeyWords): X2A66合金;蠕变时效;预拉伸;力学性能;显微组织
基金项目(Foundation): 湖南省教育厅科学研究项目(17C0013)
作者(Author): 熊纯;江茫;徐进军;
Email:
DOI: 10.14024/j.cnki.1004-244x.20181025.002
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