答国宇,黄峰,王勇,岳江波,张华,李利巍,刘静

• 1:武汉科技大学省部共建耐火材料与冶金国家重点实验室
• 2:宝钢股份中央研究院武汉分院(武钢有限技术中心)

摘要(Abstract)：

采用高温激光共聚焦扫描显微镜(CLSM)原位观察了Mg-Ca复合处理X70 MS管线钢中夹杂物诱导晶内针状铁素体(IAF)的形核行为,探讨了含Mg夹杂物尺寸和化学成分对IAF形核的影响规律及机理。结果表明:含Mg夹杂物诱发IAF形核的最佳尺寸为2～4μm,与化学成分无关;但其诱导和促进IAF形核能力受结构和成分影响显著,即单一Mg-Al-O夹杂物诱导IAF明显优于以Mg-Al-O为核心的复合夹杂物,且主要以应力应变机制为主。

关键词(KeyWords)： X70 MS管线钢;含Mg夹杂物;晶内针状铁素体(IAF);应力应变机制

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(U21A20113,52231003)

作者(Author): 答国宇,黄峰,王勇,岳江波,张华,李利巍,刘静

DOI: 10.13289/j.issn.1009-6264.2024-0359

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