新型超高强度-高韧性马氏体沉淀硬化不锈钢的组织和力学性能初探  

Microstructure and mechanical properties of a new kind of precipitation-hardenable martensitic stainless steel with ultra-high strength and high toughness

作　　者：李志[1] 支敏学[1] 刘天琦[1] 赵振业[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《航空材料学报》2000年第3期1-5,共5页Journal of Aeronautical Materials

摘　　要：在分析现有宇航用高强度马氏体沉淀硬化不锈钢和高合金超高强度钢的基础上 ,研制出一种新型超高强度 高韧性马氏体沉淀硬化不锈钢 ,其抗拉强度σb≥ 180 0MPa ,δ5≥ 15% ,KⅠC≥ 10 0MPam1/2 。On the basis of analysis of high strength precipitation hardenable martensitic stainless steel and high alloy ultra high strength steel available in aeronautical field, a new kind of precipitation hardenable martensitic stainless steel with ultra high strength and high toughness has been developed. Its mechanical properties reaches the level σ b≥1800MPa, δ 5≥15%,K ⅠC ≥100MPam 1/2 , which has satisfied the design requirement.

关 键 词：马氏体沉淀硬化不锈钢 超高强度-高韧性 

分 类 号：TG142.71[一般工业技术—材料科学与工程]