李阳,孙深,何盼,姜周华,姚聪林,董君伟

• 1:东北大学冶金学院
• 2:沈阳华盛冶金技术与装备有限责任公司

摘要(Abstract)：

采用光学显微镜、扫描电镜及冲击试验等研究了Nb、Ti稳定化对含Sn、Cu铁素体不锈钢夹杂物、组织和力学性能的影响。结果表明,随着Nb/Ti比例的降低,不锈钢中大尺寸夹杂物占比降至1%;夹杂物的尺寸及数量都有提升的趋势,且复合夹杂物中Nb、Ti的含量与Nb、Ti的比例呈正相关。显微组织观察结果表明,添加Nb、Ti稳定化元素会细化实验钢的晶粒,提升钢中铌钛的比例,晶粒细化效果更加明显,且尺寸大小更均匀。在本实验条件下,铌、钛的添加会降低铁素体不锈钢的冲击韧性,从未添加前的60 J降至25 J。

关键词(KeyWords)： 铁素体不锈钢;铌钛稳定化;夹杂物;组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51674071)

作者(Author): 李阳,孙深,何盼,姜周华,姚聪林,董君伟

DOI: 10.13289/j.issn.1009-6264.2020-0333

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