FV520B钢相变点研究与分析
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摘要
采用计算法、热膨胀分析和差示扫描量热分析(DSC)等3种方法分别测试了FV520B马氏体不锈钢加热与冷却过程中的相变临界温度,并将这3种方法的测试结果进行了对比分析,最终确定了该试验钢的相变临界温度。结果表明:在冷却过程中,该试验钢只发生了马氏体相变,这表明其具有良好的淬透性,因此热处理时采用空冷即可得到马氏体组织。FV520B钢的Ms点显示在150℃附近,且随着冷却速度的变动,Ms点没有明显的改变。FV520B钢的Ac_1、Ac_3温度点分别为635℃和753℃,该试验钢在冷却过程中只发生马氏体相变,其Ms点为151℃。
Critical temperatures of phase transformation of FV520 B steel during heating and cooling were determined by using three methods respectively,i. e.,calculation,thermal analysis and differential scanning calorimetry( DSC). Finally,the critical temperatures of phase transformation of the tested steel were confirmed by comparing and analyzing the testing results of the three methods. The results show that only martensite transformation occurs in the tested steel during the cooling,which indicates that FV520 B steel has good hardenability and martensite can be obtained by using air cooling. The Ms point of FV520 B steel is about 150 ℃,and it does not change significantly with the cooling rate variation. The temperature point Ac_1 and Ac_3 of FV520 B steel are 635 ℃ and 753 ℃, respectively. The martensitic transformation of the tested steel occurs only in the cooling process,and the Ms point is 151 ℃.
Critical temperatures of phase transformation of FV520 B steel during heating and cooling were determined by using three methods respectively,i. e.,calculation,thermal analysis and differential scanning calorimetry( DSC). Finally,the critical temperatures of phase transformation of the tested steel were confirmed by comparing and analyzing the testing results of the three methods. The results show that only martensite transformation occurs in the tested steel during the cooling,which indicates that FV520 B steel has good hardenability and martensite can be obtained by using air cooling. The Ms point of FV520 B steel is about 150 ℃,and it does not change significantly with the cooling rate variation. The temperature point Ac_1 and Ac_3 of FV520 B steel are 635 ℃ and 753 ℃, respectively. The martensitic transformation of the tested steel occurs only in the cooling process,and the Ms point is 151 ℃.
引文
[1]Thomas.Structural materials:properties microstructure and processing[J].Materials Science and Engineering A,2006,429(2):205-211.
[2]Webster D,Garrison W M.Martensitic non-stainless steels-high strength and high al1oy[J].Encyclopedia of Materials:Science and Technology,2008,156(32):5197-5202.
[3]李志,支敏学,刘天琦,等.新型超高强度-高韧性马氏体沉淀硬化不锈钢的组织和力学性能初探[J].航空材料学报,2000,20(3):1-5.Li Zhi,Zhi Minxue,Liu Tianqi,et al.Microstructure and mechanical properties of new ultra high strength and high toughness martensitic precipitation hardened stainless steel[J].Journal of Aeronautical Materials,2000,20(3):1-5.
[4]潘红波,唐狄,胡水平,等.热分析法测量相变温度的研究[J].物理测试,2008,26(6):43-46.Pan Hongbo,Tang Di,Hu Shuiping,et al.Development of measuring transformation temperature by thermal analysis method[J].Physics Examination and Testing,2008,26(6):43-46.
[5]Tian Zhou,Xu Liu,Yuan Li,et al.Dynamic measurement of the thermal conductivity of phase change materials in the liquid phase near the melting point[J].International Journal of Heat and Mass Transfer,2017(111):631-641.
[6]张东,李凯莉.相变材料热物性测试方法[J].材料导报,2007,21(12):103-105.Zhang Dong,Li Kaili.Testing methods of thermal property of phase change materials[J].Materials Review,2007,21(12):103-105.
[7]陈远姝,郭志春.用DSC方法测定钢的相变点研究[J].南钢科技与管理,2015(2):7-11.Chen Yuanshu,Guo Zhichun,Study on the determination of phase transition point of steel by DSC method[J].Nangang Technology and Management,2015(2):7-11.
[8]丁文圆,赵飞,张欢,等.CLAM钢CCT曲线的测定与分析[J].材料热处理学报,2017,38(7):101-106.Ding Wenyuan,Zhao Fei,Zhang Huan,et al.Determination and analysis of CCT curves of CLAM steel[J].Transactions of Materials and Heat Treatment,2017,38(7):101-106.
[9]卢金文,葛鹏,赵永庆.Mo对Ti-Mo系合金显微组织的影响及其强化效应[J].材料工程,2013(9):1-5.Lu Jinwen,Ge Peng,Zhao Yongqing.Influence of Mo on microstructure of Ti-Mo alloy strengthening effect[J].Journal of Materials Engineering,2013(9):1-5.
[10]李长庚,周孑民.相变材料相变点温度热物性的测试及误差分析[J].热能动力工程,2004,19(1):45-47.Li Changgeng,Zhou Jiemin.Measurement and error analysis of phase change temperature and thermophysical properties of phase change materials[J].Journal of Engineering for Thermal Energy and Power,2004,19(1):45-47.
[11]戴起勋.奥氏体钢马氏体相变点Ms、M(εs)[J].钢铁,1995(8):52-58.Dai Qixun.Martensite transformation point Ms and M(εs)of austenitic steel[J].Iron and Steel,1995(8):52-58.
[12]赵宝纯,李桂艳,柳永浩,等.含Mo低碳微合金钢CCT曲线的测定与分析[J].热加工工艺,2008,37(22):37-39.Zhao Baochun,Li Guiyan,Liu Yonghao,et al.Detection and analysis of CCT curve of low-carbon micro-alloyed steel with Mo[J].Hot Working Technology,2008,37(22):37-39.
[2]Webster D,Garrison W M.Martensitic non-stainless steels-high strength and high al1oy[J].Encyclopedia of Materials:Science and Technology,2008,156(32):5197-5202.
[3]李志,支敏学,刘天琦,等.新型超高强度-高韧性马氏体沉淀硬化不锈钢的组织和力学性能初探[J].航空材料学报,2000,20(3):1-5.Li Zhi,Zhi Minxue,Liu Tianqi,et al.Microstructure and mechanical properties of new ultra high strength and high toughness martensitic precipitation hardened stainless steel[J].Journal of Aeronautical Materials,2000,20(3):1-5.
[4]潘红波,唐狄,胡水平,等.热分析法测量相变温度的研究[J].物理测试,2008,26(6):43-46.Pan Hongbo,Tang Di,Hu Shuiping,et al.Development of measuring transformation temperature by thermal analysis method[J].Physics Examination and Testing,2008,26(6):43-46.
[5]Tian Zhou,Xu Liu,Yuan Li,et al.Dynamic measurement of the thermal conductivity of phase change materials in the liquid phase near the melting point[J].International Journal of Heat and Mass Transfer,2017(111):631-641.
[6]张东,李凯莉.相变材料热物性测试方法[J].材料导报,2007,21(12):103-105.Zhang Dong,Li Kaili.Testing methods of thermal property of phase change materials[J].Materials Review,2007,21(12):103-105.
[7]陈远姝,郭志春.用DSC方法测定钢的相变点研究[J].南钢科技与管理,2015(2):7-11.Chen Yuanshu,Guo Zhichun,Study on the determination of phase transition point of steel by DSC method[J].Nangang Technology and Management,2015(2):7-11.
[8]丁文圆,赵飞,张欢,等.CLAM钢CCT曲线的测定与分析[J].材料热处理学报,2017,38(7):101-106.Ding Wenyuan,Zhao Fei,Zhang Huan,et al.Determination and analysis of CCT curves of CLAM steel[J].Transactions of Materials and Heat Treatment,2017,38(7):101-106.
[9]卢金文,葛鹏,赵永庆.Mo对Ti-Mo系合金显微组织的影响及其强化效应[J].材料工程,2013(9):1-5.Lu Jinwen,Ge Peng,Zhao Yongqing.Influence of Mo on microstructure of Ti-Mo alloy strengthening effect[J].Journal of Materials Engineering,2013(9):1-5.
[10]李长庚,周孑民.相变材料相变点温度热物性的测试及误差分析[J].热能动力工程,2004,19(1):45-47.Li Changgeng,Zhou Jiemin.Measurement and error analysis of phase change temperature and thermophysical properties of phase change materials[J].Journal of Engineering for Thermal Energy and Power,2004,19(1):45-47.
[11]戴起勋.奥氏体钢马氏体相变点Ms、M(εs)[J].钢铁,1995(8):52-58.Dai Qixun.Martensite transformation point Ms and M(εs)of austenitic steel[J].Iron and Steel,1995(8):52-58.
[12]赵宝纯,李桂艳,柳永浩,等.含Mo低碳微合金钢CCT曲线的测定与分析[J].热加工工艺,2008,37(22):37-39.Zhao Baochun,Li Guiyan,Liu Yonghao,et al.Detection and analysis of CCT curve of low-carbon micro-alloyed steel with Mo[J].Hot Working Technology,2008,37(22):37-39.