T22锅炉钢奥氏体晶粒长大和马氏体转变行为的原位观察
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摘要
采用高温激光共聚焦显微镜(LSCM)对SA213-T22锅炉钢的奥氏体晶粒长大和马氏体转变的动态特性进行了原位观察研究。结果表明:①在950～1 200℃,T22钢的奥氏体平均晶粒尺寸(D)与加热温度(T)之间的定量关系可近似地用Arrhenius方程描述,奥氏体晶界迁移的激活能(Q)约为140. 5 kJ/mol;②奥氏体晶粒通过晶界的迁移和扩张、多个小晶粒合并成一个大晶粒以及分割和吞并邻近晶粒而长大;③马氏体在奥氏体的晶界和晶内形核并迅速长大,计算得出的马氏体板条束的长大速度约为282.7μm/s。
In-situ observations of dynamic behaviors of austenite grain growth and martensite transformation in SA213-T22 boiler steel were carried out by the use of a high temperature laser scanning confocal microscope(LSCM). The results are as follows:① the quantitative dependence of average size(D) of austenite grains in the steel on temperature( T) may be described approximately by Arrhenius equation in the range of 950 to 1 200 ℃, and the average activation energy(Q) for grain boundary migration is about 140. 5 kJ/mol; ② the austenite grain grows through migration and expansion of grain boundaries, combination of some smaller grains into a larger grain, as well as through parting and merging nearby grains;③ the martensite nucleates and then rapidly grows at grain boundaries and in grain interiors of austenite, and calculated growth rate of martensite lath is as great as about 282.7 μm/s.
In-situ observations of dynamic behaviors of austenite grain growth and martensite transformation in SA213-T22 boiler steel were carried out by the use of a high temperature laser scanning confocal microscope(LSCM). The results are as follows:① the quantitative dependence of average size(D) of austenite grains in the steel on temperature( T) may be described approximately by Arrhenius equation in the range of 950 to 1 200 ℃, and the average activation energy(Q) for grain boundary migration is about 140. 5 kJ/mol; ② the austenite grain grows through migration and expansion of grain boundaries, combination of some smaller grains into a larger grain, as well as through parting and merging nearby grains;③ the martensite nucleates and then rapidly grows at grain boundaries and in grain interiors of austenite, and calculated growth rate of martensite lath is as great as about 282.7 μm/s.
引文
[1] SHU G G, DING H, ZHAO Y F, et al. Analysis of high temperature boiler tube failure for T91&T22[J]. Transaction of Materials and Heat Treatment, 2004, 25(5):291-296.
[2] PURBOLAKSONO J, AHMAD J, BENG L C, et al. Failure analysis on a primary superheater tube of a power plant[J].Engineering Failure Analysis, 2010, 17(1):158-167.
[3]王起江,洪杰,徐松乾,等.超超临界电站锅炉用关键材料[J].北京科技大学学报,2012, 34(增刊1):26-33.
[4]周晓光,曾才有,徐少华,等.控制冷却对含Nb钢组织性能的影响研究[J].机械工程学报,2014,50(22):57-62.
[5]袁晓敏,胡珊珊,张义伟,等.控制冷却工艺对12Cr1MoV锅炉钢组织与性能的影响[J].金属热处理,2015,40(6)116-119.
[6]梁国俐.冷却速度对低合金高强油罐用钢组织和硬度的影响[J].材料导报:研究篇,2016,30(增刊1):539-540.
[7]宁保群,刘永长,乔志霞,等.T91铁素体耐热钢过冷奥氏体转变过程中临界冷却速度的研究[J].材料工程,2007(9):9-13.
[8]张义伟,袁晓敏,李胜祗,等.控制冷却工艺对SA213-T12锅炉钢组织性能的影响[J].材料热处理学报,2016,37(增刊1):34-38.
[9]胡海江,徐光,张玉龙,等.先进贝氏体钢奥氏体晶粒长大行为的动态观察[J].材料热处理学报,2014, 35(1):83-87.
[10]齐亮,彭凯,蔡文彩,等.X120管线钢奥氏体长大规律研究[J].材料导报:研究篇,2016,30(3):137-140.
[11] LEE S J, LEE Y K. Prediction of austenite grain growth during austenitization of low alloy steels[J]. Materials&Design,2008,29(9):1840-1844.
[12] ZHANG S S,LI M Q,LIU Y G,et al. The growth behavior of austenite grain in the heating process of 300M steel[J]. Materials Science and Engineering A,2011,528(15):4967-4972.
[13] DU AN L N, WANG J M, LIU Q Y, et al. Austenite grain growth behavior of X80 pipeline steel in heating process[J]. Journal of Iron and Steel Resarch, International,2010,17(3):62-66.
[14] POUS-ROMERO H, LONARDELLI I, COGSWELL D, et al.Austenite grain growth in a nuclear pressure vessel steel[J].Materials Science and Engineering A, 2013,567(8):72-79.
[15] STASKO R, ADRIAN H, ADRIAN A. Effect of nitrogen and vanadium on austenite gtrain growth kinetics of a low alloy steel[J].Materials Characterization,2006,56(4-5):340-347.
[16]钟云龙,刘国权,刘胜新,等.新型油井管钢33Mn2V的奥氏体晶粒长大规律[J].金属学报,2003,39(7):699-703.
[17]毛卫民,杨平.金属多晶体晶粒长大时晶界的迁移行为[J].中国科学:技术科学,2014, 44(9):911-916.
[18]徐祖耀.马氏体相变与马氏体[M].北京:科学出版社,1999.
[2] PURBOLAKSONO J, AHMAD J, BENG L C, et al. Failure analysis on a primary superheater tube of a power plant[J].Engineering Failure Analysis, 2010, 17(1):158-167.
[3]王起江,洪杰,徐松乾,等.超超临界电站锅炉用关键材料[J].北京科技大学学报,2012, 34(增刊1):26-33.
[4]周晓光,曾才有,徐少华,等.控制冷却对含Nb钢组织性能的影响研究[J].机械工程学报,2014,50(22):57-62.
[5]袁晓敏,胡珊珊,张义伟,等.控制冷却工艺对12Cr1MoV锅炉钢组织与性能的影响[J].金属热处理,2015,40(6)116-119.
[6]梁国俐.冷却速度对低合金高强油罐用钢组织和硬度的影响[J].材料导报:研究篇,2016,30(增刊1):539-540.
[7]宁保群,刘永长,乔志霞,等.T91铁素体耐热钢过冷奥氏体转变过程中临界冷却速度的研究[J].材料工程,2007(9):9-13.
[8]张义伟,袁晓敏,李胜祗,等.控制冷却工艺对SA213-T12锅炉钢组织性能的影响[J].材料热处理学报,2016,37(增刊1):34-38.
[9]胡海江,徐光,张玉龙,等.先进贝氏体钢奥氏体晶粒长大行为的动态观察[J].材料热处理学报,2014, 35(1):83-87.
[10]齐亮,彭凯,蔡文彩,等.X120管线钢奥氏体长大规律研究[J].材料导报:研究篇,2016,30(3):137-140.
[11] LEE S J, LEE Y K. Prediction of austenite grain growth during austenitization of low alloy steels[J]. Materials&Design,2008,29(9):1840-1844.
[12] ZHANG S S,LI M Q,LIU Y G,et al. The growth behavior of austenite grain in the heating process of 300M steel[J]. Materials Science and Engineering A,2011,528(15):4967-4972.
[13] DU AN L N, WANG J M, LIU Q Y, et al. Austenite grain growth behavior of X80 pipeline steel in heating process[J]. Journal of Iron and Steel Resarch, International,2010,17(3):62-66.
[14] POUS-ROMERO H, LONARDELLI I, COGSWELL D, et al.Austenite grain growth in a nuclear pressure vessel steel[J].Materials Science and Engineering A, 2013,567(8):72-79.
[15] STASKO R, ADRIAN H, ADRIAN A. Effect of nitrogen and vanadium on austenite gtrain growth kinetics of a low alloy steel[J].Materials Characterization,2006,56(4-5):340-347.
[16]钟云龙,刘国权,刘胜新,等.新型油井管钢33Mn2V的奥氏体晶粒长大规律[J].金属学报,2003,39(7):699-703.
[17]毛卫民,杨平.金属多晶体晶粒长大时晶界的迁移行为[J].中国科学:技术科学,2014, 44(9):911-916.
[18]徐祖耀.马氏体相变与马氏体[M].北京:科学出版社,1999.
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