余伟,许立雄,张昳,王班,何春雨,董恩涛

• 1:北京科技大学高效轧制国家工程研究中心

摘要(Abstract)：

采用Gleeble3500热模拟试验机对95CrMo钢进行了等温单向热压缩试验,得到了其在应变速率为0.1、1和10 s-1,变形温度为750~1050℃时的流变应力曲线。结果表明,应变量、变形温度和应变速率对95CrMo钢流变应力的影响是通过动态回复和动态再结晶软化机制造成的,这种软化机制是三者共同作用的结果。基于试验结果,建立了一种同时考虑应变量补偿、变形温度补偿和应变速率补偿的95CrMo钢流变应力本构方程。从相关系数、平均相对误差和标准偏差3个方面将该方程与周纪华-管克制模型进行了对比,发现该本构方程相比周纪华-管克智模型具有更高的精度和可靠性,更适用于数值仿真领域。

关键词(KeyWords)： 95CrMo钢;流变应力;本构关系模型;周纪华-管克智模型

Abstract:

Keywords:

基金项目(Foundation): 国家“十二五”科技支撑计划(2012BAE03B01)

作者(Author): 余伟,许立雄,张昳,王班,何春雨,董恩涛

DOI: 10.13289/j.issn.1009-6264.2015.10.042

参考文献(References)：

• [1]陈洪.95Cr Mo锥形钎杆热处理工艺的探索[J].现代机械,2014(1):75-78.CHEN Hong.Heat treatment process of the 95Cr Mo conical drill rod[J].Modern Machinery,2014(1):75-78.
• [2]王立军,余伟,武会宾,等.12Mn Ni VR钢的高温变形行为及其数学模型[J].金属热处理,2010(7):5-8.WANG Li-jun,YU Wei,WU Hui-bin,et al.Hot deformation behaviors and mathematical model of12Mn Ni VR steel[J].Heat Treatment of Metals,2010,35(7):5-8.
• [3]Sun H,Sun Y,Zhang R,et al.Hot deformation behavior and microstructural evolution of a modified 310 austenitic steel[J].Materials&Design,2014,64:374-380.
• [4]李慎升,米振莉,唐荻,等.TWIP钢变形抗力数学模型及试验研究[J].新技术新工艺,2008(8):99-101.LI Shen-sheng,MI Zhen-li,TANG Di,et al.Experimental research on deformation resistance model of TWIP steel[J].New Technology&New Process,2008(8):99-101.
• [5]Fan J K,Kou H C,Lai M J,et al.Characterization of hot deformation behavior of a new near beta titanium alloy:Ti-7333[J].Materials&Design,2013,49:945-952.
• [6]戴铁军,刘战英,刘相华,等.30Mn Si钢金属塑性变形抗力的数学模型[J].塑性工程学报,2001,8(3):17-20.DAI Tie-jun,LIU Zhan-ying,LIU Xiang-hua,et al.Mathematical model of plastic deformation resistance of 30Mn Si steel[J].Journal of Plasticity Engineering,2001,8(3):17-20.
• [7]陈靖,李宏图,胡建平,等.热轧DP600双相钢变形抗力的实验研究[J].热加工工艺,2014,43(9):64-66.CHEN Jin,LI Hong-tu,HU Jian-ping,et al.Experimental research on deformation resistance of hot-rolled DP600 phase steel[J].Hot Working Technology,2014,43(9):64-66.
• [8]Jenab A,Taheri AK.Experimental investigation of the hot deformation behavior of AA7075:Development and comparison of flow localization parameter and dynamic material model processing maps[J].International Journal of Mechanical Sciences,2014,78:97-105.
• [9]周纪华,管克智.金属塑性变形抗力[M].北京:机械工业出版社,1989.
• [10]Zener C,Hollomon H.Effect of strain-rate upon the plastic flow of steel[J].Journal of Applied Physics,1944,15(1):22-32.
• [11]Liao S L,Zhang L W,Yue C X,et al.Research on thermal deformation behavior and model of flow stress of GCr15 steel[J].Journal of Materials Engineering,2008,4:8-10.

文章评论(Comment)：