摘要
研究了固溶处理对新型Cr-Ni-Co-Mo马氏体时效不锈钢力学性能的影响。结果表明,在低于1 050℃固溶处理时钢中存在一些以χ相为主的金属间相,它们不仅严重破坏了钢的韧性,而且使钢在时效处理后的最终强度降低了100 MPa;经1 050℃固溶处理后钢的基体组织为高密度位错的板条马氏体,此固溶态组织经适当时效处理可以使钢的强度达到1 940 MPa,且得到与其高韧性匹配良好的综合力学性能。
The effect of solution treatment on mechanical properties of a new stainless steel, CrNi-Co-Mo maraging stainless steel was studied. The result shows that there are intermetallics in the steel solution treated at a temperature lower than 1 050 ℃ with Χ（ phase as the major phase. The intermetallics deteriorate toughness of the steel,and the strength of the steel is reduced by 100 MPa. There is lathy martensite of high density dislocation in the steel after 1050 ℃ solid solution treatment for one hour. By proper aging treatment, the strength of the steel may reach up to 1 940 MPa, with a good combination of strength and toughness.
出处
《钢铁》
CAS
CSCD
北大核心
2007年第3期47-51,共5页
Iron and Steel
基金
国家高技术研究发展计划资助项目(2002AA305105)
关键词
固溶处理
χ相
力学性能
solution temperature
Χ phase
mechanical properties
