二元铝-锂合金组织结构与性能的关系
姚大平,张匀,胡壮麒,李依依,师昌绪
摘要(Abstract):
本文通过对三种二元铝-锂合金在不同热处理条件下的组织结构观察和力学性能实验,研究了其第二相沉淀特征和微观组织与性能的关系。结果表明,525℃固溶1h是这些合金最佳固溶条件。190℃25h是峰值时效条件,此时弥散强化和有序强化作用均最大;相同时间160℃时效为欠时效条件,析出相颗粒较小,强(硬)度较低,220℃25h过时效处理,δ′相粗大,合金变形时位错绕过δ′相,因此,此时无有序强化作用,强(硬)度下降。
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基金项目(Foundation):
作者(Author): 姚大平,张匀,胡壮麒,李依依,师昌绪
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DOI: 10.14024/j.cnki.1004-244x.1989.03.006
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