期刊文献+

42CrMo钢加热过程中的奥氏体晶粒尺寸演变 被引量:9

Evolution of austenite grain size of 42CrMo steel during heating
原文传递
导出
摘要 通过金相试验方法测定42CrMo钢在890~930℃下保温10~240 min后的晶粒尺寸。结果表明,42CrMo钢在加热到试验温度890~930℃时已经完全奥氏体化,保温过程中的晶粒生长属于正常生长;加热温度对晶粒尺寸的影响较大,保温时间对晶粒尺寸的影响较小;随保温时间的延长晶粒生长缓慢,晶粒尺寸与保温时间满足指数小于1的函数关系。基于试验数据,通过线性回归得到晶粒长大的Beck模型参数,通过非线性回归得到Sellars和Anelli模型参数,3个模型的预测精度都较好,而Anelli模型的适用性要高于Beck模型和Sellars模型,故在预测42CrMo钢的奥氏体晶粒长大规律时宜使用Anelli模型。 Austenite grain size of the 42CrMo steel heated at 890-930℃ for 10-240 min was measured through optical metallography exams.The results reveal that the 42CrMo steel is fully austenitized when heated between 890-930℃ and the grain growth is normal during the heating process.Temperature has an important effect on grain size,but the effect of holding time is minor.Grain growth is slow as holding time prolongs,and grain size and holding time satisfy a function whose exponent is less than 1.Experimental data are fitted to determine parameters of the Beck model,Sellars model and Anelli model.The prediction accuracy of all three models is better.Anelli model is considered being the most suitable,thus is recommended for the prediction of austenite grain growth law of the 42CrMo steel.
作者 彭则 李萌蘖 卜恒勇 李其 Peng Ze;Li Mengnie;Bu Hengyong;Li Qi(Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming Yunnan 650093,China;Erzhong Heavy Equipment Co.,Ltd.,Deyang Sichuan 618000,China)
出处 《金属热处理》 CAS CSCD 北大核心 2021年第5期25-31,共7页 Heat Treatment of Metals
基金 科技部重点研发计划(2017YFB0701804)。
关键词 42CRMO钢 晶粒长大 晶粒长大模型 非线性回归 42CrMo steel grain growth grain growth model nonlinear regression
  • 相关文献

参考文献8

二级参考文献73

  • 1周云,杨晓伟,陈焕德,张宇.加热温度对600MPa级高强钢筋组织及性能的影响[J].钢铁,2020,55(1):101-107. 被引量:8
  • 2李伟,陈文琳,吴跃,杨栋,周香.42CrMo钢加热时奥氏体晶粒长大演化规律[J].材料热处理学报,2015,36(1):104-108. 被引量:27
  • 3张德芬,胡卓超,左良,王福.3004铝合金再结晶织构及其显微组织[J].东北大学学报(自然科学版),2004,25(9):840-843. 被引量:13
  • 4C Devadas,et al.The Thermal and Metallurgical State of Steel Strip during Hot Rolling:Part 3.Microstructural Evolution[J]. Metallurgical Transactions A,1991,(22A):335.
  • 5E Anelli.Application of Mathematical Modelling to Hot Rolling and Controlled 0Cooling of Wire Rods and Bars[J].ISIJ International,1992,(32):440.
  • 6N Raghunathan, et al. Microstructural Development during Annealing of Hot Rolled Al-Mg Alloys[J].Materials Science and Technology, 1989, 6(5):542.
  • 7Shujun Jiao, et al. Modelling of Isothermal Austenite Grain Growth in a Si-Mn TRIP Steel-Experiment and Calculation[J]. Steel Research, 2000, 71(9):345.
  • 8Rees G I,Perdrix J,Maurickx T,Bhadeshia H K D H.The effect of niobium in solid solution on the transformation kinetics of bainite[ J].Materials Science and Engineering,1995,A194:179-186.
  • 9Quidort D,Bréchet Y.The role of carbon on the kinetics of bainite transformation in steels[J].Scripta Materialia,2002,47:151-156.
  • 10Giranlt E,Jacques P,Ratchev P,et al.Study of the temperature dependence of the bainitic transformation rate in a multiphase TRIP-assisted steel[ J].Materials Science and Engineering,1999,A 273-275:471-474.

共引文献84

同被引文献86

引证文献9

二级引证文献11

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部