刘冀尧,王文焱,陈玉勇,张豪胤,黄亚博,谢敬佩,邵昌

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心
• 3:哈尔滨工业大学材料学院
• 4:厦门大学材料学院

摘要(Abstract)：

本试验采用冷等静压法及粉末冶金法制备钛合金,消除了成分偏析对合金性能的影响。在Ti-6Al-4V-2Cr中加入稀土Nd元素并进行热处理,运用光学显微镜、XRD和TEM对其组织和性能进行观察和分析。通过观察发现合金的组织为均匀的α+β相。运用XRD和TEM观察发现,晶界和晶内均有Nd2O3析出物,Nd2O3的出现细化了晶粒,提高了形核率,降低了晶粒尺寸。运用精密万能试验机进行了力学性能测试,当Nd元素含量为1%时,合金的综合力学性能最好,合金的抗拉强度提高了10.7%,伸长率提高了49.1%。

关键词(KeyWords)： Ti-6Al-4V-2Cr合金;稀土Nd;相界;抗拉强度;伸长率

Abstract:

Keywords:

基金项目(Foundation): 军工“863”项目(2011412-1);; 国防“973”支持项目

作者(Author): 刘冀尧,王文焱,陈玉勇,张豪胤,黄亚博,谢敬佩,邵昌

DOI: 10.13289/j.issn.1009-6264.2016-X275

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