周海涛,钟芳华,李家华,邵兴明,彭勇,刘瑞蕊,彭谦之

• 1:中南大学材料科学与工程学院
• 2:东北大学材料冶金学院
• 3:江苏新华合金电器有限公司

摘要(Abstract)：

采用金相显微镜(OM)、扫描电子显微镜(SEM)、拉伸试验机等研究了热处理对GH690-Re合金组织与性能的影响。结果表明:与热轧态组织相比,经热处理后GH690-Re合金组织有所粗化。合金的最佳热处理工艺是在1050℃固溶45 min+720℃时效9 h,组织为单相奥氏体基体+γ'析出相,晶粒大小比较均匀。室温条件下材料的抗拉强度为655 MPa,屈服强度为300MPa,合金的高强度主要来源于时效过程中从过饱和固溶体中析出的γ'相引起的析出强化。

关键词(KeyWords)： 热处理;GH690-Re合金;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家火炬计划(2011GH30513);; 江苏省科技计划(SBE201000527)

作者(Author): 周海涛,钟芳华,李家华,邵兴明,彭勇,刘瑞蕊,彭谦之

DOI: 10.13289/j.issn.1009-6264.2013.03.018

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