徐静,文胜平,刘同辉,王为,聂祚仁

• 1:北京工业大学材料科学与工程学院

摘要(Abstract)：

将峰时效态Al-Er-Zr/Hf合金依次在450℃、500℃高温退火,探讨Al-Er-Zr/Hf合金析出相的高温粗化行为。结果表明:经450℃退火处理时,Al-Er-Zr/Hf合金硬度明显下降,电导率先下降后上升,且经450℃×100 h退火后的电导率高于峰时效态;再经500℃退火处理时,Al-Er-Zr/Hf合金的硬度及电导率变化均与450℃退火类似,但500℃×100 h退火后的Al-Er-Zr/Hf合金电导率值要低于500℃×100 h退火前;Al-Er-Zr/Hf合金中析出相的粗化过程符合LSW理论,其粗化过程主要受Zr、Hf原子扩散控制;Hf元素的添加能降低析出相的高温粗化速率,而且含量越多,效果越明显。

关键词(KeyWords)： Al-Er-Zr/Hf合金;时效;析出相;粗化

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划(973)基金(2012CB619503);; 国家自然科学基金(51201003)

作者(Author): 徐静,文胜平,刘同辉,王为,聂祚仁

DOI: 10.13289/j.issn.1009-6264.2018-0053

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