孙悦,郑淮北,盛振东,王英虎,谷雪忠,刘德学,王斌,张鹏,张哲峰

• 1:中国科学院金属研究所沈阳材料科学国家研究中心
• 2:兰州理工大学材料科学与工程学院
• 3:成都先进金属材料产业技术研究院股份有限公司

摘要(Abstract)：

采用扫描电镜、透射电镜及疲劳试验机等研究了不同时效处理的高钛马氏体时效不锈钢的微观组织及疲劳裂纹扩展行为。结果表明：不同时效处理的高钛马氏体时效不锈钢基体内存在大量纳米级Ni_3Ti析出相；随时效温度的升高，Ni_3Ti析出相的分布逐渐变得稀疏；不同时效处理的高钛马氏体时效不锈钢的疲劳裂纹扩展寿命呈现出随屈服强度增加而降低的趋势，影响高钛马氏体时效不锈钢疲劳裂纹扩展速率的关键因素是析出相分布。

关键词(KeyWords)： 高钛马氏体时效不锈钢;时效处理;析出相分布;疲劳裂纹扩展寿命

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2022YFB3705200);; 国家自然科学基金面上项目(52471150)

作者(Author): 孙悦,郑淮北,盛振东,王英虎,谷雪忠,刘德学,王斌,张鹏,张哲峰

DOI: 10.13289/j.issn.1009-6264.2024-0279

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