王葛,刘胜强,郭伟,李怀欣,韩大阔,李志广,李强

• 1:燕山大学国家冷轧板带装备及工艺工程技术研究中心
• 2:中信戴卡股份有限公司
• 3:河北工业大学材料科学与工程学院

摘要(Abstract)：

利用光学显微镜(OM),扫描电镜(SEM),X射线衍射仪(XRD)和力学性能测试等研究了不同深冷处理工艺对经Q-P-T工艺处理后30CrMo钢组织和力学性能的影响。结果表明,30CrMo钢最佳的Q-P-T+深冷工艺为:260℃淬火温度,400℃碳配分温度、60 s碳配分时间、-100℃深冷温度、1 h深冷保温时间和一次深冷。经最优的Q-P-T+深冷工艺处理后,30CrMo钢的碳化物的平均尺寸较小,残留奥氏体含量明显增加,残留奥氏体的体积分数约为7.9%,显微硬度约为482 HV,抗拉强度约为1629 MPa,强塑积约为20525 MPa·%,伸长率约为12.6%,其综合力学性能得到了较大幅度提高。

关键词(KeyWords)： 30CrMo钢;Q-P-T工艺;深冷处理;残留奥氏体;强塑积

Abstract:

Keywords:

基金项目(Foundation): 河北省自然科学基金(E2016203119)

作者(Author): 王葛,刘胜强,郭伟,李怀欣,韩大阔,李志广,李强

DOI: 10.13289/j.issn.1009-6264.2019-0503

参考文献(References)：

• [1] 王葛,朱国善,高静娜,等.4130X钢大直径厚壁压力气瓶喷水淬火数值模拟[J].材料热处理学报,2015,36(7):250-256.WANG Ge,ZHU Guo-shan,GAO Jing-na,et al.Numerical simulation of flow and temperature fields in spray quenching process of large-diameter thick-walled 4130X steel gas cylinder[J].Transactions of Materials and Heat Treatment,2015,36(7):250-256.
• [2] 王葛,王莉莉,高静娜,等.30CrMo钢大直径厚壁压力气瓶淬火过程数值模拟[J].钢铁,2015,50(2):61-69.WANG Ge,WANG Li-li,GAO Jing-na,et al.Numerical simulation on quenching process of the large-diameter thick-wall gas cylinder of 30CrMo steel[J].Iron and Steel,2015,50(2):61-69.
• [3] 戎咏华.先进超高强度-高塑性Q-P-T钢[J].金属学报,2011,47(12):1483-1489.RONG Yong-hua.Advanced Q-P-T steels with ultrahigh strength-high ductility[J].Acta Metallurgica Sinica,2011,47(12):1483-1489.
• [4] 徐祖耀.淬火-碳分配-回火(Q-P-T)工艺浅介[J].金属热处理,2009,34(6):1-8.XU Zu-yao.A brief introduction to quenching-partitioning-tempering(Q-P-T) process[J].Heat Treatment of Metals,2009,34(6):1-8
• [5] 贾晓帅,左训伟,陈乃录,等.经新型Q-P-T工艺处理后Q235钢的组织与性能[J].金属学报,2013,49(1):35-42.JIA Xiao-shuai,ZUO Xun-wei,CHEN Nai-lu,et al.Microstructure and properties of Q235 steels treated by novel process[J].Acta Metallurgica Sinica,2013,49(1):35-42.
• [6] 刘坤锋,晏彬彬,徐新成,等.深冷处理对37CrMnMo钢组织及力学性能的影响[J].热加工工艺,2018,47(8):233-236.LIU Kun-feng,YAN Bin-bin,XU Xin-cheng,et al.Effects of deep cryogenic treatment on microstructure and mechanical properties of 37CrMnMo steel[J].Hot Working Technology,2018,47(8):233-236.
• [7] 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 and application on cryogenic treatment of steels[J].Transactions of Materials and Heat Treatment,2013,34(12):1-8.
• [8] Molinari A,Pellizzari M,Gialanella S,et al.Effect of deep cryogenic treatment on the mechanical properties of tool steels[J].Journal of Materials Processing Technology.2001,118(1/3):350-355.
• [9] 杨晶,张文达,郑铠东,等.深冷处理时间对A319合金显微组织和力学性能的影响[J].材料热处理学报,2014,35(S1):181-184.YANG Jing,ZHANG Wen-da.ZHENG Kai-dong,et al.Effect of deep cryogenic treatment time on microstructure and tensile strength of A319 alloy[J].Transactions of Materials and Heat Treatment,2014,35(S1):181-184.
• [10] 陈叶青,吴益文,秦子威,等.深冷处理对GCr15轴承钢组织及力学性能的影响[J].机械工程材料,2018,42(5):55-58+62.CHEN Ye-qing,WU Yi-wen,QIN Zi-wei,et al.Effects of deep cryogenic treatment on microstructure and mechanical properties of GCr15 bearing steel[J].Materials for Mechanical Engineering,2018,42(5):55-58+62.
• [11] 刘胜强.30CrMo钢Q-P-T及深冷处理工艺研究[D].秦皇岛:燕山大学,2018.LIU Sheng-qiang.Research on Q-P-T and deep cryogenic treatment process of 30CrMo steel[D].Qinhuangdao:Yanshan University,2018.
• [12] 蒋培洪,陈炜晔,董芳,等.保温时间对深冷处理钢铁材料组织与性能的影响[J].热加工工艺,2018,47(14):155-157.JIANG Pei-hong,CHEN Wei-ye,DONG Fang,et al.Effects of holding time on microstructure and properties of deep cryogenic treatment steel[J].Hot Working Technology,2018,47(14):155-157.
• [13] 刘凯.深冷处理对铸态Cu-38.72Zn合金性能的影响[J].特种铸造及有色合金,2018,38(8):927-928.LIU Kai.Effects of cryogenic treatment on properties of cast Cu-38.72Zn alloy[J].Special-cast and Non-ferrous Alloys,2018,38(8):927-928.
• [14] 胡生双,王浩军,杨平,等.30CrMnSiA钢的深冷处理[J].金属热处理,2018,43(11):178-181.HU Sheng-shuang,WANG Hao-jun,YANG Ping,et al.Cryogenic treatment of 30CrMnSiA steel[J].Heat Treatment of Metals,2018,43(11):178-181.
• [15] 陈连生,杨栋,田亚强,等.配分温度对低碳高强Q&P钢组织及力学性能影响[J].材料热处理学报,2014,35(1):55-59.CHEN Lian-sheng,YANG Dong,TIAN Ya-qiang,et al.Effect of partitioning temperature on microstructure and mechanical properties of low carbon high strength Q&P steel[J].Transacations of Materials and Heat Treatment,2014,35(1):55-59.
• [16] 陈连生,赵远,田亚强,等.配分时间对低碳高强Q&P钢组织及力学性能影响[J].热加工工艺,2013,42(20):63-66.CHEN Lian-sheng,ZHAO Yuan,TIAN Ya-qiang,et al.Effect of partitioning time on microstructure and mechanical properties of low carbon high strength Q&P steel[J].Hot Working Technology,2013,42(20):63-66.

文章评论(Comment)：