杨劼,任慧平,王海燕,高雪云,刘宗昌

• 1:内蒙古科技大学材料与冶金学院

摘要(Abstract)：

根据(GB/T 1220—1992)不锈钢标准成分范围,对兼具高强度、高韧性和高耐腐蚀性钢的组织,结合基础理论分析与软件模拟,进行成分设计,预设组织为含Cu无碳化物贝氏体组织。利用DIL-87型淬火膨胀仪对所设计试验钢在不同奥氏体化温度、保温时间和冷却速度等条件下进行膨胀试验,测定其相变动力学参数,结合光学显微镜分析其相变行为并绘制相应的相变动力学曲线。结果表明:在连续冷却转变过程中,冷却速度为0.1～5℃/s时,试验钢的组织为贝氏体与马氏体,冷却速度小于0.1℃/s时,为珠光体、贝氏体和马氏体;等温转变过程中,当等温温度在B_s(375℃)～B_f(225℃)之间时,转变产物以贝氏体为主,在M_s(307℃)以上为贝氏体,在M_s(307℃)以下为贝氏体和马氏体。从贝氏体转变过程中来看,预设试验钢的贝氏体转变区间宽泛且B_s点较低。

关键词(KeyWords)： CCT曲线;TTT曲线;无碳化物贝氏体;成分设计

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 杨劼,任慧平,王海燕,高雪云,刘宗昌

DOI: 10.13289/j.issn.1009-6264.2021-0213

参考文献(References)：

• [1] Saunders N,Guo U,Li X,et al.Using JMatPro to model materials properties and behavior[J].JOM:the Journal of the Minerals,Metals and Materials Society,2003,55(12):60-65.
• [2] Guo Z,Saunders N,Schille J P,et al.Material properties for process simulation[J].Materials Science and Engineering A,2009,499:7-13.
• [3] 国家技术监督局.中华人民共和国国家标准：不锈钢棒：GB/T 1220—1992[S].北京：中国标准出版社，1992.
• [4] 崔忠沂，刘北兴.金属学与热处理原理[M].北京：机械工业出版社，1998:185.
• [5] Ennis P J,Quadakkers W J.The steam oxidation resistance of 9%-12% chromium steels,in materials for advanced power generation[J].Energy Technology,2002,21:1131-1142.
• [6] 谭谆礼，白秉哲，方鸿生.Mo在新型空冷低碳Mn-Si-Cr系贝氏体钢中的作用[J].金属热处理，2007(9):48-51.TAN Zhun-li,BAI Bing-zhe,FANG Hong-sheng.Effect of Mo on new air cooling low carbon Mn-Si-Cr bainite steel[J].Heat Treatment of Metals,2007(9):48-51.
• [7] 程巨强，刘志学.铸造无碳化物贝氏体耐磨钢的研究与应用[J].铸造，2011,60(4):382-385.CHENG Ju-qiang,LIU Zhi-xue.Research and application of casting carbide free bainite wear resistant steel[J].Foundry,2011,60(4):382-385.
• [8] 章守华，吴承建.钢铁材料学[M].北京：冶金工业出版社，1992:169.
• [9] Jha G,Das S,Sinha S,et al.Design and development of precipitate strengthened advanced high strength steel for automotive application[J].Materials Science and Engineering A,2013,561:394-402.
• [10] Pickering F B.Physical Metallurgy and the Design of Steels[M].London:Applied Science Publishers,1978.95.
• [11] 方鸿生，刘东雨，常开地，等.1500 MPa级经济型贝氏体/马氏体复相钢的组织与性能[J].钢铁研究学报，2001,(3):31-36.FANG Hong-sheng,LIU Dong-yu,CHANG Kai-di,et al.Microstructure and properties of 1500 MPa economical bainite/martensite composite steel[J].Journal of Iron and Steel Research,2001,(3):31-36.
• [12] 刘东雨，方鸿生.残留奥氏体对1500 MPa级新型低碳Mn—Si—Cr系合金钢冲击韧度的影响[J].材料热处理学报，2002,23(4):57-61.LIU Dong-yu,FANG Hong-sheng.Effect of residual austenite on impact toughness of new low carbon Mn-Si-Cr alloy steel at 1500 MPa[J].Transactions of Materials and Heat Treatment,2002,23(4):57-61.
• [13] 黄维刚，方鸿生，郑燕康.C-Si-Mn-B系贝氏体钢的强度及强化机制[J].钢铁研究学报，2003,(1):38-41.HUANG Wei-gang,FANG Hong-sheng,ZHENG Yan-kang.Strength and strengthening mechanism of C-Si-Mn-B bainite steel[J].Journal of Iron and Steel Research,2003,(1):38-41.
• [14] Dai S J,Wang Y,Chen F,et al.Design of new biomedical titanium alloy based on d-electron alloy design theory and JMatPro software[J].Transactions of Nonferrous Metals Society of China,2013,23(10):3027-3032.
• [15] Quidort D,Brechet Y.Isothermal growth kinetics of bainite in 0.5%C steels[J].Acta Materialia,2001,49(20):4161-4170.
• [16] Parker E R.Interrelations of compositions,transformation kinetics,morphology,and mechanical properties of alloy steels[J].Metallurgical Transactions A,1977,8(7):1025-1042.
• [17] Babu B N P,Bhat M S,Parker E R,et al.A rapid magnetometric technique to plot isothermal transformation diagrams[J].Metallurgical Transactions A,1976,7(1):17-22.
• [18] Caballero F G,Garcia-Mateo C,Miller M K.Design of novel bainitic steels:moving from ultrafine to nanoscale structures[J].JOM,2014,66(5):747-755.
• [19] Gao G,Zhang H,Gui X,et al.Enhanced ductility and toughness in an ultrahigh-strength Mn-Si-Cr-C steel:the great potential of ultrafine filmy retained austenite[J].Acta Materialia,2014,76:425-433.
• [20] Kawata H,Hayashi K,Sugiura N,et al.Effect of martensite in initial structure on bainite transformation[J].Materials Science Forum,2010,638-642:3307-3312.
• [21] Borrajo-Pelaez R,Hedstr M P.Recent developments of crystallographic analysis methods in the scanning electron microscope for applications in metallurgy[J].Critical Reviews in Solid State and Materials Sciences,2018,43(6):455-474.
• [22] Toji Y,Matsuda H,Raabe D.Effect of Si on the acceleration of bainite transformation by pre-existing martensite[J].Acta Materialia,2016,116:250.

文章评论(Comment)：