用MMS-300热力模拟机研究了变形量、保温温度及保温时间对钛钼微合金钢铁素体基体上析出物尺寸的影响规律,获得了铁素体区析出动力学特征.结果表明,实验钢铁素体基体中析出物主要为钛钼的碳氮化物,其中尺寸较大析出物为圆形、方形或长条形,随机分布;尺寸细小析出物为圆形或椭圆形,其析出形态为排列整齐的相间析出及弥散析出,当保温温度较高时,其分布形式主要为相间析出;随着变形量的增加及保温时间的延长,析出物尺寸减少,随着保温温度的升高,析出物尺寸先增加后减少,铁素体区析出动力学曲线中600℃和700℃为最小尺寸析出温度.
参考文献
[1] | 唐荻,米振莉,陈雨来.国外新型汽车用钢的技术要求及研究开发现状[J].钢铁,2005(06):1-5. |
[2] | 含Mo低合金钢复合碳氮化物的析出热力学计算模型及分析[J].材料热处理学报,2014(06):207-212. |
[3] | 衣海龙,徐洋,刘振宇,王国栋.超快冷+层流冷却工艺对Mn-Ti钢组织与性能影响[J].材料热处理学报,2014(03):122-126. |
[4] | Honeycombe R W K .Transformation from austenite in alloy steels[J].Metallurgical Transactions A,1976(7):915-936.,1976. |
[5] | Kamoto R,Borgenstam A,Agren J .Interphase precipitation in niobium-microalloyed steels[J].Acta Materialia,2010,58(14):4783-4790.,2010. |
[6] | YEN Huang-wei,CHEN Po-yu,HUANG Ching-yuan,et al .lnterphase precipitation of nanometer-sized carbides in a titanium-molybdenum-bearing low-carbon steel[J].Acta Materialia,2011,59(16):6264-6274.,2011. |
[7] | YEN Huang-wei,HUANG Ching-yuan,YANG Jer-ren .Characterization of interphase precipitated nanometer-sized carbides in a Ti-Mo-bearing steel[J].Scripta Materialia,2009,61(6):616-619.,2009. |
[8] | 孙超凡,蔡庆伍,武会宾,毛红艳,陈宏振.轧制工艺对铁素体基Ti-Mo微合金钢纳米尺度碳氮化物析出行为的影响[J].金属学报,2012(12):1415-1421. |
[9] | 段修刚,蔡庆伍,武会宾,唐获.铁素体基Ti-Mo微合金钢超细碳化物析出规律[J].北京科技大学学报,2012(06):644-650. |
[10] | Funakawa Y,Shiozaki T,Tomita K,et al .Development of high strength hot-rolled sheet steel consisting of ferrite and nanometer sized carbides[J].ISIJ International,2004,44 |
[11] | CHEN Chih-yuan,YEN Huang-Wei,KAO Fang-Hsin,et al .Precipitation hardening of high strength low alloy steels by nanometers-sized carbides[J].Materials Science and Engieering A,2009,499 |
[12] | JANG Jae-hoon,LEE Chang-hoon,HEO Yoon-uk,et al .Stability of (Ti,M) C (M =Nb,V,Mo and W) carbide in steels using first principles calculations[J].Acta Materialia,2012,60 |
[13] | 罗海文,赵沛,成国光,常曙光,李德胜,杨柏华.含钛钢奥氏体中第二相析出的热力学分析和实验研究[J].钢铁,2000(11):51-55. |
[14] | 黄庆渊,顏鸿威,潘永村,等 .纳米级析出物强化热轧汽车用钢开发[J].矿冶,2009,53(4):45-60.HUANG Ching-yuan,YEN Hong-wei,PAN Yong-chun,et al.The development of nano-precipitation strengthened hot rolled automobile steels[J].Mining&Metallurgy,2009,53(4):45-60.,2009. |
[15] | 陈伯宇.硅含量对低碳低合金钢之界面析出碳化物的影响[D].台湾:台湾大学,2010.,2010. |
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