曹祖涵,石晓辉,范智渊,尹佳敏

• 1:太原理工大学材料科学与工程学院

摘要(Abstract)：

采用光学电镜(OM)、扫描电镜(SEM)、Image Pro Plus 6.0等表征手段,结合数学及理论分析,构建了TC11钛合金低温冲击韧性-组织参数定量关系,阐明了其内在影响机理。结果表明:组织中初生α相体积分数通过影响塑性变形功及裂纹扩展撕裂功而影响TC11钛合金低温冲击韧性。当初生α相体积分数小于50%时,低温冲击韧性符合sine函数变化规律,大于50%时,则维持在25 J/cm~2左右。初生α相体积分数约为30%～35%时,合金的塑性变形功及裂纹扩展撕裂功均取得极大值,此时低温冲击韧性达到峰值。相较于裂纹扩展路径曲折程度对低温冲击韧性所带来的影响,试样在冲击过程中所吸收的塑性功起到更为关键的作用。

关键词(KeyWords)： TC11钛合金;低温冲击韧性;组织

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年基金(51801132);; 国家留学基金(CSC NO.201906935013)

作者(Author): 曹祖涵,石晓辉,范智渊,尹佳敏

DOI: 10.13289/j.issn.1009-6264.2020-0217

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