谢桂兰,王永威,朱戴博,韩坦,李娟,李晶鑫,张雅婷,李杰,江超华

• 1:湘潭大学机械工程与力学学院
• 2:复杂轨迹加工工艺及装备教育部工程研究中心
• 3:苏州金江铜业有限公司
• 4:广东中发摩丹科技有限公司

摘要(Abstract)：

借助Gleeble-3500热模拟试验机研究了Cu-15Ni-8Sn合金在变形温度为933～1083 K,应变速率为0.001～10 s~(-1)条件下的热压缩变形行为，通过Arrhenius模型建立了合金的热压缩变形本构方程并对其准确性进行了验证，基于动态材料模型得到了合金的3D热加工图。结果表明：合金适宜的热加工区间为变形温度993～1083 K,应变速率0.01～0.1 s~(-1);在应变速率为0.01 s~(-1)时，随着变形温度的升高，合金的位错密度逐渐降低，动态再结晶体积分数逐渐增加，小角度晶界逐渐转化为大角度晶界，动态再结晶产生的软化效果使得合金的变形抗力逐渐降低。

关键词(KeyWords)： Cu-15Ni-8Sn合金;本构方程;热加工图

Abstract:

Keywords:

基金项目(Foundation): 湖南省自然科学基金面上项目(2022JJ30570);; 湖南省优秀博士后创新人才项目(2021RC2087);; 湖南省水利厅科技项目(XSKJ2021000-31);; 佛山市南海区“蓝海”人才项目(2030032000861)

作者(Author): 谢桂兰,王永威,朱戴博,韩坦,李娟,李晶鑫,张雅婷,李杰,江超华

DOI: 10.13289/j.issn.1009-6264.2022-0422

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