影响15-5PH沉淀硬化不锈钢硬度的因素
Factors Influencing Hardness of 15-5PH Martensitic Precipitation-hardening Stainless Steel
赵广进 1任卫斌 1赵金龙 1李剑雨1
作者信息
- 1. 中国空空导弹研究院,河南 洛阳 471003
- 折叠
摘要
炼制了两炉化学成分不同的 15-5PH 马氏体沉淀硬化不锈钢并制备了试样.对试样进行了1 040℃保温90 min油冷的固溶处理及铣削、钻削、磨削试验和分别在400～620℃时效1.5、4、8 和12 h.随后检测了试样的硬度和显微组织.结果表明:切削加工对15-5PH马氏体沉淀硬化不锈钢的硬度无明显影响;在450℃时效,随着时效时间延长至4 h,15-5PH钢的硬度提高,并达到了44～46 HRC的硬度要求;15-5PH钢的最佳时效工艺为450℃保温4h.
Abstract
Two heats of 15-5PH martensitic precipitation-hardening stainless steels differing in chemical composition were smelted.The specimens were fabricated from these two steels,and were subjected to solution treatment consisting of heating at 1 040℃for 90 min followed by oil cooling,to milling,drilling and grinding tests,and to aging at 400 to 620℃for 1.5,4,8 and 12 h,respectively.After this,the specimens were tested for hardness and microstructure.The results indicated that(a)the machinings had no significant effect on hardness of the 15-5PH martensitic precipitation-hardening stainless steel;(b)in the case of aging at 450℃,as the aging time increased up to 4 h,hardness of the 15-5PH steels increased and reached 44 to 46 HRC which are desirable;and(c)the aging process most applicable to 15-5PH steel was at 450℃for 4 h.
关键词
15-5PH马氏体沉淀硬化不锈钢/硬度/机加工/时效Key words
15-5PH martensitic precipitation-hardening stainless steel/hardness/machining/aging引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据