杜东辉,许晓静,张晓宇,贾伟杰,张冲,黄鹏

• 1:江苏大学机械工程学院
• 2:江苏大学先进制造与现代装备技术工程研究院

摘要(Abstract)：

通过硬度测试、室温拉伸实验、低温冲击实验研究了常规奥氏体化后后续热处理对35Cr Ni3Mo V钢的组织与性能的影响。结果表明:相比常规奥氏体化淬火,经常规奥氏体化淬火+回火热处理工艺处理(860℃×6 h+810℃×2 h,油冷淬火+600℃×16 h,油冷回火)后,锻件的低温冲击韧性提高了约33%,硬度为326 HB,室温拉伸强度略微下降,伸长率提高了约3.65%;在常规奥氏体化淬火+回火热处理工艺下(860℃×6 h+780℃×2 h,油冷淬火+600℃×16 h,油冷回火),锻件的低温冲击韧性与常规奥氏体化淬火相比提升了约4.1%,室温拉伸强度和伸长率分别提升了约8.4%和9.62%,硬度为356 HB。在810℃低温奥氏体化淬火下,降低了锻件的强度并大幅度提高了室温冲击韧性,晶粒组织均匀且细小。在780℃亚温淬火下,大幅度提高锻件强度的同时也小幅度提高了室温冲击韧性。

关键词(KeyWords)： 35Cr Ni3Mo V钢;奥氏体化温度;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 江苏省科技计划产学研联合创新资金(BY2014123-04)

作者(Author): 杜东辉,许晓静,张晓宇,贾伟杰,张冲,黄鹏

DOI: 10.13289/j.issn.1009-6264.2017-0322

参考文献(References)：

• [1]胡华军,卞良法,卞晓春,等.细晶粒35CrNi3MoV钢大型锻坯的制造方法:中国,CN103305673A[P].2013.HU Hua-jun,BIAN Liang-fa,BIAN Xiao-chun,et al.Method for producing fine grained 35CrNi3MoV steel large forged billet:China,CN103305673A[P].2013.
• [2]胡华军,卞良法,卞晓春,等.35CrNi3MoV钢大型锻件的短流程热处理方法:中国,CN103343200A[P].2013.HU Hua-jun,BIAN Liang-fa,BIAN Xiao-chun,et al.Short flow heat treatment method for 35CrNi3MoV steel large forging:China,CN103343200A[P].2013.
• [3]李安民.30Cr Ni2Mo V钢的组织遗传与晶粒细化[J].金属热处理,2013,38(4):82-84.LI An-min.Investigation on structure and fine-graining of 30Cr Ni2Mo V steel[J].Heat Treatment of Metals,2013,38(4):82-84.
• [4]胡华军,卞晓春,顾春卫,等.应用退火工艺消除35CrNi3MoV钢的组织遗传[J].金属热处理,2013,38(4):64-66.HU Hua-jun,BIAN Xiao-chun,GU Chun-wei,et al.Use of annealing process for eliminating structure inheritance of 35CrNi3MoV[J].Heat Treatment of Metals,2013,38(4):64-66.
• [5]胡华军,卞晓春,顾春卫,等.应用正火工艺消除35CrNi3MoV钢的组织遗传[J].热加工工艺,2013,42(16):163-164.HU Hua-jun,BIAN Xiao-chun,GU Chun-wei,et al.Eliminating microstructure inheritance of 35CrNi3MoV by using normalizing process[J].Hot Working Technology,2013,42(16):163-164.
• [6]陈菁,李湘生,纪胜如,等.35CrNi3MoV钢大型锻件的锻造工艺对其组织和性能的影响[J].锻压技术,1997(5):10-12.CHEN Jing,LI Xiang-sheng,JI Sheng-ru,et al.Effect of forging process on microstructure and properties of 35CrNi3MoV steel heavy forgings[J].Forging&Stamping Technology,1997(5):10-12.
• [7]王冀恒,李惠,谢春生,等.35Cr Mo钢亚温淬火强韧化组织与性能研究[J].热加工工艺,2009,38(6):144-146.WANG Ji-heng,LI Hui,XIE Chun-sheng,et al.Study on microstructure and properties of 35Cr Mo steel by modified treatment[J].Hot Working Technology,2009,38(6):144-146.
• [8]许晓静,陈洋,胡华军,等.提高35CrNi3MoV钢锻件低温冲击韧性的方法:中国,CN 105755236 A[P].2016.XU Xiao-jing,CHEN Yang,HU Hua-jun,et al.Method for improving low temperature impact toughness of 35CrNi3MoV steel forgings:China,CN105755236 A[P].2016.
• [9]庞辉勇,谢良法,李经涛.提高3.5Ni厚钢板低温冲击韧性的研究[J].压力容器,2009,26(10):5-9.PANG Hui-yong,XIE Liang-fa,LI Jing-tao.Study on improving the low-temperature impact toughness of 3.5%nickel heavy plate[J].Pressure Vessel Technology,2009,26(10):5-9.
• [10]王传雅.钢的亚温淬火[J].金属热处理,1980(2):3-17.WANG Chuan-ya.Steel sub-temperature quenching[J].Heat Treatment of Metals,1980(2):3-17.
• [11]靳芳芳,王毛球,惠卫军,等.奥氏体化温度对25CrNi3MoV钢的组织和力学性能的影响[J].大型铸锻件,2007(1):16-18.JIN Fang-fang,WANG Mao-qiu,HUI Wei-jun,et al.The effect of the austenitizing temperature on the structure and the mechanical property for25CrNi3MoV steel[J].Heavy Castings and Forgings,2007(1):16-18.
• [12]钟斌.35CrNi3MoV钢组织遗传消除工艺研究[J].大型铸锻件,2007(5):3-5.ZHONG Bin.The research on the heredity elimination technology of 35CrNi3MoV steel structure[J].Heavy Castings and Forgings,2007(5):3-5.

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