白璇,赵昆渝,姜雯,李俊,李绍宏,李智东

• 1:昆明理工大学材料科学与工程学院

摘要(Abstract)：

研究了淬火+回火(No.1钢)及淬火+冷处理+回火(No.2钢)两种处理工艺下,超级马氏体不锈钢组织和性能的差异。结果表明:两钢中基体组织均为回火马氏体,但经过冷处理的No.2钢马氏体板条更平直,尺寸更小。在No.1、No.2钢中,随回火温度的升高,逆变奥氏体含量的变化趋势都为先增高后降低。在No.1、No.2钢中逆变奥氏体达到最大值的回火温度分别为650℃,700℃。No.2钢中Ni元素富集点含量比No.1钢低,但Ni富集点数比No.1钢多。No.1、No.2钢的硬度变化趋势都为先快速降低后缓慢回升,但在相同回火温度下,No.2钢的硬度值更低。

关键词(KeyWords)： 超级马氏体钢;冷处理;组织;硬度;逆变奥氏体

Abstract:

Keywords:

基金项目(Foundation): 昆明理工大学校级基金(619320090024)

作者(Author): 白璇,赵昆渝,姜雯,李俊,李绍宏,李智东

DOI: 10.13289/j.issn.1009-6264.2015.03.018

参考文献(References)：

• [1]薄鑫涛.不锈钢钢种发展的一些动向[J].热处理,2007,22(4):5-9.BO Xin-tao.Development trend of stainless steels[J].Heat Treatment,2007,22(4):5-9.
• [2]CHI Hong-xiao,MA Dang-shen,YON Qi-long,et al.Effect of cryogenic treatment on properties of Cr8-type cold work die steel[J].Iron Steel Res Int,2010,17(6):43-46.
• [3]吴红艳,艾峥嵘,刘相华.钢铁材料深冷处理技术研究和应用进展[J].材料热处理学报,2013,34(12):1-8.WU Hong-yan,AI Zheng-rong,LIU Xiang-hua.Progress of research application on cryogenic treatment of steels[J].Transactions of Materials and Heat Treatment,2013,34(12):1-8.
• [4]邓黎辉,汪宏斌,李绍宏,等.高强韧冷作模具钢深冷处理性能及组织[J].材料热处理学报,2011,32(4):76-81.DENG Li-hui,WANG Hong-bin,LI Shao-hong,et al.Microstructure and properties of a high strength tool steel after cryogenic treatment[J].Transactions of Materials and Heat Treatment,2011,32(4):76-81.
• [5]刘勇,于文平,张金东,等.深冷处理对T8A钢组织和力学性能的影响[J].材料热处理学报,2010,31(10):49-52.LIU Yong,YU Wen-ping,ZHANG Jin-dong,et al.Effect of deep cryogenic treatment on microstructure and mechanical properties of T8A steel[J].Transactions of Materials and Heat Treatment,2010,31(10):49-52.
• [6]姜雯.超级马氏体不锈钢组织性能及逆变奥氏体机制的研究[D].昆明:昆明理工大学,2014:63-64.JIANG Wen.Research on formation of reversed austenite in super martensitic stainless steel[D].Kunming:Kunming University of Science and Technology,2014:63-64.
• [7]宋元元.0Cr13Ni4Mo不锈钢中逆变奥氏体的相变机制[D].沈阳:中国科学院金属研究所,2011:46-47.SONG Yuan-yuan.Formation mechanism of the reversed austenite in 0Cr13Ni4Mo stainless steel[D].Shenyang:Institute of Metal Research,Chinese Academy of Sciences,2011:46-47.
• [8]Song Y Y,Li X Y,Rong L J,et al.Reversed austenite in 0Cr13Ni4Mo martensitic stainless steels[J].Materials Chemistry and Physics,2014,143(2):728-734.
• [9]Misra R D K,Zhang Z,Venkatasurya PK C,et al.The effect of nitrogen on the formation of phase reversion-induced nanograined/ultrafine-grained structure and mechanical behavior of a Cr-Ni-N steel[J].Materials Science and Engineering A,2011,528(3):1889-1896.
• [10]Eun Seo Park,Dae Kyoung Yoo,Jee Hyun Sung,et al.Formation of reversed austenite during tempering of 14Cr-7Ni-0.3Nb-0.7Mo-0.03C super martensitic stainless steel[J].Metal and Materials International,2004,10(6):521-525.

文章评论(Comment)：