何雪松,左鹏鹏,吴晓春

• 1:上海大学材料科学与工程学院

摘要(Abstract)：

采用热膨胀仪测定了含2.0%Ni和不含Ni的新型压铸模具钢SDYZ的连续冷却转变曲线(CCT曲线),并结合金相法、扫描电镜(SEM)和维氏硬度分析了Ni元素对SDYZ钢连续转变规律、组织以及硬度的影响。结果表明,Ni元素可显著降低SDYZ钢的相变点(Ac1、Ac3和Ms),扩大奥氏体相区,使CCT曲线右移;同时,Ni元素可使SDYZ钢获得全马氏体的冷速由0.3℃/s降低到0.1℃/s,提高钢的淬透性;但由于Ni是强奥氏体稳定化元素,会增加淬火残留奥氏体,从而使含Ni的SDYZ钢硬度降低了20~30 HV。

关键词(KeyWords)： 压铸模具钢;Ni元素;CCT曲线;淬透性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51171104)

作者(Author): 何雪松,左鹏鹏,吴晓春

DOI: 10.13289/j.issn.1009-6264.2015.10.022

参考文献(References)：

• [1]姚再起,马芳武,刘强,等.汽车轻量化评价方法研究[J].中国工程科学,2014,16(1):10-16.YAO Zai-qi,MA Fang-wu,LIU Qiang,et al.Evaluation methods of vehicle lightweight[J].Engineering Sciences,2014,16(1):10-16.
• [2]冯美斌.汽车轻量化技术中新材料的发展及应用[J].汽车工程,2006,28(3):213-220.FENG Mei-bin.Development and applications of new materials in automotive lightweighting technologies[J].Automotive Engineering,2006,28(3):213-220.
• [3]黄晓锋,田载友,朱凯,等.压铸铝合金及压铸技术的研究进展[J].热加工工艺,2008,37(17):137-141.HUANG Xiao-feng,TIAN Zai-you,ZHU Kai,et al.Study and application of die-casting aluminum alloy and die-casting technology[J].Hot Working Technology,2008,37(17):137-141.
• [4]余东梅.中国铝合金压铸业的发展及现状[J].世界有色金属,2007(3):63-65.YU Dong-mei.Status quo and development of Chins aluminum alloy die-casting industry[J].World Nonferrous Metals,2007(3):63-65.
• [5]Pickering F B.Hardenability Concepts with Applications to Steel[M].Warrendale:TMS-AIME,1978:179.
• [6]Xu W,Ferry M,Wang Y.Influence of alloying elements on as-cast microstructure and strength of gray iron[J].Materials Science and Engineering A,2005,390(1):326-333.
• [7]吴晓川,陈雨来,武会宾,等.620 MPa级海洋平台钢的连续冷却转变[J].材料热处理学报,2013,33(S2):53-57.WU Xiao-chuan,CHEN Yu-lai,WU Hui-bin,et al.Continuous cooling transformation of 620 MPa grade off-shore platform plate steel[J].Transactions of Materials and Heat Treatment,2013,33(S2):53-57.
• [8]王剑星.Ni含量对0Cr17Ni4Cu4Nb不锈钢组织与性能的影响[D].重庆:重庆大学,2010.
• [9]Zajac G,Pacyna J.The kinetics of phase transformations during tempering in structural steels with nickel[J].Journal of Materials Processing Technology,2005,162/163:442-446.
• [10]Ryoo D Y,Kang N,Kang C Y.Effect of Ni content on the tensile properties and strain-induced martensite transformation for 304 stainless steel[J].Materials Science and Engineering A,2011,528(6):2277-2281.
• [11]朱晨,王伯健.钼及镍在不同钢种中作用的研究进展[J].热加工工艺,2009,38(24):36-38.ZHU Chen,WANG Bo-jian.Research progress on effect of molybdenum and nickel in different kinds of steel[J].Hot Working Technology,2009,38(24):36-38.
• [12]范长刚,董瀚,时捷,等.镍含量对2200 MPa级超高强度钢力学性能的影响[J].金属热处理,2007,32(2):16-19.FAN Chang-gang,DONG Han,SHI Jie,et al.Effect of nickel content on mechanical properties of 2200 MPa grade ultra high strength steels[J].Heat Treatment of Metals,2007,32(2):16-19.
• [13]俞学节,郭继良,朱家华,等.镍对基体钢二次硬化的影响[J].上海钢研,1982(1):10-17.YU Xue-jie,GUO Ji-liang,ZHU Jia-hua,et al.Effect of nickle on secondary hardening of matrix steel[J].Shanghai Steel&Iron Research,1982(1):10-17.
• [14]Park B J,Choi J M,Lee K J.Analysis of phase transformations during continuous cooling by the first derivative of dilatation in low carbon steels[J].Materials Characterization,2012,64:8-14.
• [15]曹艺,王昭东,吴迪,等.Mo和Ni对低合金耐磨钢连续冷却转变的影响[J].材料热处理学报,2011,32(5):74-78.CAO Yi,WANG Zhao-dong,WU Di,et al.Effect of Mo and Ni on continuous cooling transformation of low alloy wear-resistant steel[J].Transactions of Materials and Heat Treatment,2011,32(5):74-78.
• [16]陶素芬,王福明,于乔木,等.海洋平台用EQ70钢的连续冷却转变[J].材料热处理学报,2013,34(7):84-88.TAO Su-fen,WANG Fu-ming,YU Qiao-mu,et al.Continuous cooling transformation of EQ70 steel for offshore platform[J].Transactions of Materials and Heat Treatment,2013,34(7):84-88.
• [17]勾雪,王福明,孙乐飞,等.EQ70海洋平台用钢动态连续冷却转变[J].金属热处理,2014,39(5):6-9.GOU Xue,WANG Fu-ming,SUN Le-fei,et al.Dynamic continuous cooling transformation of EQ70 steel for offshore platform[J].Heat Treatment of Metals,2014,39(5):6-9.
• [18]Medvedeva A.Performance of advanced tool steels for cutting tool bodies[D].Karlstad,Sweden:Karlstad University,2010.
• [19]Odqvist J,Hillert M,gren J.Effect of alloying elements on theγtoαtransformation in steel.I[J].Acta Materialia,2002,50(12):3211-3225.
• [20]刘宗昌,任慧平.贝氏体与贝氏体相变[M].北京:冶金工业出版社,2009.

文章评论(Comment)：