00Cr13Ni7M04C04W2Ti马氏体时效钢的时效动力学研究  

A Study on Aging Dynamics of Maraging Stainless Steel 00Cr13Ni7Mo4Co4W2Ti

作　　者：姜越[1] 甄彩霞[1] 李彩霞[1] 

机构地区：[1]哈尔滨理工大学应用科学学院,哈尔滨150080

出　　处：《特殊钢》2009年第1期4-6,共3页Special Steel

基　　金：黑龙江省博士后基金资助项目(LBH-Z05141);黑龙江省教育厅科研项目(11531044)

摘　　要：研究用马氏体时效不锈钢(%:0.007C、13.44Cr、7.47Ni、4.1 5Mo、4.21Co、1.84W、0.12Ti)由15kg真空感应炉熔炼和真空自耗炉重熔精炼而成。试验得出经1100℃1h固溶处理的φ12mm轧制试样450～550℃时效硬化曲线,分析了该钢的时效硬化指数和激活能。结果表明,00Cr13Ni7Mo4Co4W2Ti钢的时效析出相为六方结构的条状R-相(Co-Cr-Mo金属间化合物),其尺寸为10～30mm,R-相的析出动力学可用Arrhenius方程描述,低于525℃时效存在预沉淀现象,并且时效硬化指数随时效温度升高而增加,时效过程表观激活能为156.8kJ/mol。Studied maraging stainless steel- 0. 007C, 13.44Cr, 7.47Ni, 4.15Mo, 4. 21Co, 1.84W, 0.12Ti was melted by a 15 kg vacuum induction furnace and remelt-refinined by a vacuum consumable electrode furnace. The 450 550 ℃ aging hardening curves of φ12 mm rolled samples solution-treated at 1 100 ℃ for 1 h was obtained by test and the aging hardening index and activation energy of the steel was analyzed. Results showed that the aging precipitates in steel 00Cr13Ni7Mo4Co4W2Ti was R-phase （Co-Cr-Mo intermetallic compound） with bar shape and hexagonal structure, its size was 10 -30 nm; the precipitating dynamics for R- phase could be described by Arrhenius equation, the pre-preeipitation was found during aging at temperature less than 525 ℃, with increasing aging temperature, the aging hardening index increased and the calculated apparent activation energy for aging process was 156. 8 J/mol.

关 键 词：马氏体时效不锈钢 时效动力学 时效硬化指数 表观激活能 

分 类 号：TG161[金属学及工艺—热处理]