无钴马氏体时效钢的研究与应用  

Research and Applications of Cobalt-Free Maraging Steels

作　　者：刘福广[1] 席守谋[1] 张建国[1] 施延龄 郑淑丽 

机构地区：[1]西北工业大学材料科学与工程学院,陕西西安710072 [2]航天二院210所,陕西西安710065

出　　处：《金属热处理》2007年第2期7-11,共5页Heat Treatment of Metals

摘　　要：从无钴马氏体时效钢的种类、合金化、热处理对该材料力学性能的影响及强化机理等方面综述了无钴马氏体时效钢的研究和应用概况。无钴马氏体时效钢中不含昂贵的钴元素,利用板条马氏体基体上析出的N i3(Ti,Mo)等沉淀相来实现强化,在低于2100MPa的强度范围内,与同级别的含钴的18N i马氏体时效钢相比,有相近的强韧性。Researeh and applieations of Co-free maraging steels were introdueed in many respeets,ineluding their kinds, alloying,influenee of solution and aging treatments on meehanieal properties and the strengthening meehanism of the alloys. Co-free maraging steels have a good combination of ultra-high strength and moderate toughness, close to that of the 18Ni maraging steel eontaining Co with the same strength level below 2100 MPa. The superior performanee is aehieved by aging preeipitations sueh as Ni3 （Ti, Mo） in lath martensite matrix.

关 键 词：无钴马氏体时效钢 固溶处理 时效处理 强化机制 力学性能 

分 类 号：TG142.24[一般工业技术—材料科学与工程]