何亚利,王均安,陈永充,张朦,陈崇林,贺英

• 1:上海大学材料科学与工程学院
• 2:上海市高温超导重点实验室

摘要(Abstract)：

采用等离子弧熔炼和真空感应重熔的方法制备了Ni-32%Cu合金坯锭,经热锻、热轧及退火得到实验用合金,将其置于350℃下保温0、1.5和4.0 h获得了3种不同调幅分解程度的Ni-32%Cu合金。这些合金经过总变形量为98%的冷轧后,采用X射线四环衍射仪,研究了调幅分解程度对Ni-32%Cu合金形变织构的影响。结果表明:Ni-32%Cu合金在350℃保温时发生了调幅分解,且随着保温时间的延长,合金的调幅分解程度增大。随着调幅分解程度的增加,Ni-32%Cu合金形变织构中S取向和C取向份额呈下降趋势,B取向份额呈上升趋势。这主要是因为调幅组织在形变时,只有少数的滑移系开动,促进了平面滑移,抑制了交滑移的进行;随着调幅分解程度的增加,调幅相所占比例增加,调幅相的存在对位错有钉扎作用,使得位错的可动性下降。

关键词(KeyWords)： Ni-32%Cu合金;调幅分解;形变织构;极图;取向分布函数(ODF)

Abstract:

Keywords:

基金项目(Foundation): 上海市高温超导重点实验室项目(14DZ2260700);; 上海大学科研培育基金项目

作者(Author): 何亚利,王均安,陈永充,张朦,陈崇林,贺英

DOI: 10.13289/j.issn.1009-6264.2020-0491

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