2.25Cr1Mo钢大型锻件热处理工艺数值模拟
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摘要
利用有限元模拟计算,结合CCT曲线,研究了2. 25Cr1Mo大型锻件不同热处理工艺下的组织演变规律。以大型2. 25Cr1Mo管板锻件为背景,模拟现场工况,对热处理工艺进行数值模拟。讨论不同热处理工艺下的换热系数,利用有限元模拟软件与实测的CCT曲线,建立了2. 25Cr1Mo锻件在热处理工艺下的温度场、组织场,探究了2. 25Cr1Mo锻件在水冷,油冷以及空冷3种冷却工艺下温度场和组织场的变化,并利用质点追踪的方法对比了大锻件不同部位的温度变化。结果显示在水冷工艺条件下,最终的组织主要以贝氏体为主,能满足工艺的需要,为最优的热处理工艺。
Microstructure evolution of 2.25Cr1Mo large forgings under different heat treatment processes was studied by using finite element simulations and combined with CCT curves. With large 2.25Cr1Mo tube sheet forgings as background,the on-site working conditions were simulated and the heat treatment process was numerically simulated. The heat transfer coefficient under different heat treatment processes was discussed. Using the finite element simulation software and the measured CCT curve,the temperature field and the microstructure field of the 2.25Cr1Mo forgings under the heat treatment process were established. The 2.25Cr1Mo forgings under the different cooling conditions of water,oil and air cooling were investigated,the temperature changes in different parts of the large forgings were compared by using the particle tracking method. The results show that under the condition of water cooling as the optimal heat treatment process,the final microstructure is mainly bainite,which can satisfy the requirement of process.
Microstructure evolution of 2.25Cr1Mo large forgings under different heat treatment processes was studied by using finite element simulations and combined with CCT curves. With large 2.25Cr1Mo tube sheet forgings as background,the on-site working conditions were simulated and the heat treatment process was numerically simulated. The heat transfer coefficient under different heat treatment processes was discussed. Using the finite element simulation software and the measured CCT curve,the temperature field and the microstructure field of the 2.25Cr1Mo forgings under the heat treatment process were established. The 2.25Cr1Mo forgings under the different cooling conditions of water,oil and air cooling were investigated,the temperature changes in different parts of the large forgings were compared by using the particle tracking method. The results show that under the condition of water cooling as the optimal heat treatment process,the final microstructure is mainly bainite,which can satisfy the requirement of process.
引文
[1]郭会光,曲宗实.我国大锻件制造业的发展[J].大型铸锻件,2003,99(1):42-45.Guo Huiguang,Qu Zongshi.Development of heavy forging manufacturing industry in our country[J].Heavy Casting and Forging,2003,99(1):42-45.
[2]阚玉琦,梁书华,刘璐,等.核电站蒸汽发生器管板锻件热处理质量控制研究[J].热加工工艺,2010,39(4):159-161.Kan Yuqi,Liang Shuhua,Liu Lu,et al.Study on quality control of heat treatment for steam generator tube sheet forging[J].Hot Working Technology[J].Hot Working Technology,2010,39(4):159-161.
[3]刘庄,吴肇基,吴景之,等.热处理过程的数值模拟[M].北京:科技出版社,1996.
[4]胡延平,徐强,唐华峰,等.基于ANSYS的多点式中频感应淬火温度场有限元模拟[J].金属热处理,2015,40(4):169-173.Hu Yanping,Xu Qiang,Tang Huafeng,et al.Temperature field FEMsimulation of multi-point medium-frequency induction hardening based on ANSYS[J].Heat Treatment of Metals,2015,40(4):169-173.
[5]潘相相.钠冷快堆蒸汽发生器主材研究进展[J].世界有色金属,2017(9):181-183.Pan Xiangxiang,Development of steam generator main materials for fast reactor[J].World Nonferrous Metal,2017(9):181-183.
[6]刘正东,杨钢,程世长,等.2.25Cr-1Mo钢回火过程中碳化物析出顺序的研究[J].金属热处理,2005,30(4):32-34.Liu Zhengdong,Yang Gang,Cheng Shichang,et al.Investigation of carbide precipitation order of 2.25Cr-1Mo steel during tempering[J].Heat Treatment of Metals,2005,30(4):32-34.
[7]刘正东,吴光大,张光中.2.25Cr-1Mo钢热处理特性及其强韧化机制[J].钢铁研究学报,1994(s1):25-31.Liu Zhengdong,Wu Guangda,Zhang Guangzhong.Heat-treatment features and strengthening and toughening mechanism in 2.25Cr1Mo steel[J].Journal of Iron and Steel Research,1994(s1):25-31.
[8]匡琦,潘健生,叶健松.三维非线性有限元在热处理炉CAD中的应用研究[J].金属热处理,2001,26(11):15-17.Kuang Qi,Pan Jiansheng,Ye Jiansong.Investigations on applications of heat treatment furnace CAD by using 3D nonlinear FEM[J].Heat Treatment of Metals,2001,26(11):15-17.
[9]张世中.钢的过冷奥氏体转变曲线图集[M].北京:冶金工业出版社;1993.
[10]谌冬冬,周旭东,郭未昀.ST52-3G钢CCT曲线的测定与分析[J].金属热处理,2017,42(7):168-171.Chen Dongdong,Zhou Xudong,Guo Weiyun.Measurement and analysis of CCT curve for ST52-3G steel[J].Heat Treatment of Metals,2017,42(7):168-171.
[11]Gomez M,Rancel Lucia,Escudero E,et al.Phase transformation under continuous cooling conditions in medium carbon microalloyed steels[J].Journal of Materials Science and Technology,2014,30(5):511-516.
[12]Olasolo M,Uranga P,Rodriguezibabe J M,et al.Effect of austenite microstructure and cooling rate on transformation characteristics in a low carbon Nb-V microalloyed steel[J].Materials Science and Engineering A,2011,528(6):2559-2569.
[13]李红斌,林哲,方芳,等.应力作用下X100管线钢SH-CCT曲线[J].金属热处理,2016,41(11):171-174.Li Hongbin,Lin Zhe,Fang Fang,et al.SH-CCT curve of X100pipeline steel under the action of stress[J].Heat Treatment of Metals,2016,41(11):171-174.
[2]阚玉琦,梁书华,刘璐,等.核电站蒸汽发生器管板锻件热处理质量控制研究[J].热加工工艺,2010,39(4):159-161.Kan Yuqi,Liang Shuhua,Liu Lu,et al.Study on quality control of heat treatment for steam generator tube sheet forging[J].Hot Working Technology[J].Hot Working Technology,2010,39(4):159-161.
[3]刘庄,吴肇基,吴景之,等.热处理过程的数值模拟[M].北京:科技出版社,1996.
[4]胡延平,徐强,唐华峰,等.基于ANSYS的多点式中频感应淬火温度场有限元模拟[J].金属热处理,2015,40(4):169-173.Hu Yanping,Xu Qiang,Tang Huafeng,et al.Temperature field FEMsimulation of multi-point medium-frequency induction hardening based on ANSYS[J].Heat Treatment of Metals,2015,40(4):169-173.
[5]潘相相.钠冷快堆蒸汽发生器主材研究进展[J].世界有色金属,2017(9):181-183.Pan Xiangxiang,Development of steam generator main materials for fast reactor[J].World Nonferrous Metal,2017(9):181-183.
[6]刘正东,杨钢,程世长,等.2.25Cr-1Mo钢回火过程中碳化物析出顺序的研究[J].金属热处理,2005,30(4):32-34.Liu Zhengdong,Yang Gang,Cheng Shichang,et al.Investigation of carbide precipitation order of 2.25Cr-1Mo steel during tempering[J].Heat Treatment of Metals,2005,30(4):32-34.
[7]刘正东,吴光大,张光中.2.25Cr-1Mo钢热处理特性及其强韧化机制[J].钢铁研究学报,1994(s1):25-31.Liu Zhengdong,Wu Guangda,Zhang Guangzhong.Heat-treatment features and strengthening and toughening mechanism in 2.25Cr1Mo steel[J].Journal of Iron and Steel Research,1994(s1):25-31.
[8]匡琦,潘健生,叶健松.三维非线性有限元在热处理炉CAD中的应用研究[J].金属热处理,2001,26(11):15-17.Kuang Qi,Pan Jiansheng,Ye Jiansong.Investigations on applications of heat treatment furnace CAD by using 3D nonlinear FEM[J].Heat Treatment of Metals,2001,26(11):15-17.
[9]张世中.钢的过冷奥氏体转变曲线图集[M].北京:冶金工业出版社;1993.
[10]谌冬冬,周旭东,郭未昀.ST52-3G钢CCT曲线的测定与分析[J].金属热处理,2017,42(7):168-171.Chen Dongdong,Zhou Xudong,Guo Weiyun.Measurement and analysis of CCT curve for ST52-3G steel[J].Heat Treatment of Metals,2017,42(7):168-171.
[11]Gomez M,Rancel Lucia,Escudero E,et al.Phase transformation under continuous cooling conditions in medium carbon microalloyed steels[J].Journal of Materials Science and Technology,2014,30(5):511-516.
[12]Olasolo M,Uranga P,Rodriguezibabe J M,et al.Effect of austenite microstructure and cooling rate on transformation characteristics in a low carbon Nb-V microalloyed steel[J].Materials Science and Engineering A,2011,528(6):2559-2569.
[13]李红斌,林哲,方芳,等.应力作用下X100管线钢SH-CCT曲线[J].金属热处理,2016,41(11):171-174.Li Hongbin,Lin Zhe,Fang Fang,et al.SH-CCT curve of X100pipeline steel under the action of stress[J].Heat Treatment of Metals,2016,41(11):171-174.