程志伟,金建军,鲁世强,胡春文,刘大博,刘俊伟

• 1:南昌航空大学材料科学与工程学院
• 2:北京航空材料研究院

摘要(Abstract)：

利用光学显微镜、透射电子显微镜和力学性能测试,研究了不同淬火温度(850~1050℃)和回火温度(100~750℃)对PH13-8Mo钢微观组织和力学性能的影响。结果表明,经过淬火后形成的含有高密度位错的细小板条马氏体是该钢具有较高强韧性的组织基础,在500℃左右回火时,与基体共格的细小弥散分布的NiAl沉淀相是该钢出现强度峰值的主要原因。NiAl沉淀相在450℃左右回火时开始析出,高于510℃回火时因NiAl相长大而逐渐与基体失去共格关系,高于700℃回火时NiAl相溶解。PH13-8Mo钢经925℃淬火和510℃回火可获得良好的综合性能。

关键词(KeyWords)： PH13-8Mo钢;NiAl沉淀相;微观组织;热处理;性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51164030)

作者(Author): 程志伟,金建军,鲁世强,胡春文,刘大博,刘俊伟

DOI: 10.13289/j.issn.1009-6264.2013.11.010

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