陈少东,刘赣华

• 1:江西理工大学机电工程学院

摘要(Abstract)：

在变形温度为900～1100℃应变速率为0.1～10 s~(-1)及变形量为60%的条件下，采用热压缩模拟机对20CrMoH钢进行热压缩试验，研究其热变形行为，并建立基于应变补偿Arrhenius模型的本构方程和基于动态材料模型的热加工图。结果表明：在同一应变速率下，变形温度升高100℃,20CrMoH钢的流动应力降低约40 MPa;建立的考虑应变补偿的本构方程具有较好的预测能力，流变应力预测值与试验值的相关系数为0.9853;20CrMoH钢在温度范围为1000～1100℃,应变速率2～10 s~(-1)以及温度范围为950～1000℃,应变速率0.1～0.3 s~(-1)区域内变形会发生失稳；20CrMoH钢推荐的热加工最佳工艺条件为：温度为1050～1100℃,应变速率为0.7～3 s~(-1)。

关键词(KeyWords)： 20CrMoH钢;本构方程;应变补偿;热加工图

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52165005)

作者(Author): 陈少东,刘赣华

DOI: 10.13289/j.issn.1009-6264.2023-0188

参考文献(References)：

• [1] 廖斌，曹玲飞，吴晓东，等.双级形变热处理工艺中7A55铝合金热变形行为及热加工图[J].有色金属工程，2021,11(2):1-8.LIAO Bin,CAO Ling-fei,WU Xiao-dong,et al.Hot deformation behavior and processing map of 7A55 aluminum alloy in double thermo-mechanical treatment process[J].Nonferrous Metals Engineering,2021,11(2):1-8.
• [2] 花思明，张平则，刘子利，等.Cu-0.58Sn合金热变形行为和热加工图[J].有色金属工程，2021,11(10):40-47.HUA Si-ming,ZHANG Ping-ze,LIU Zi-li,et al.Hot deformation behavior and hot working map of Cu-0.58Sn alloy[J].Nonferrous Metals Engineering,2021,11(10):40-47.
• [3] Cai J,Li F,Liu T,et al.Constitutive equations for elevated temperature flow stress of Ti-6Al-4V alloy considering the effect of strain[J].Materials & Design,2011,32(3):1144-1151.
• [4] Ma X,Zeng W,Sun Y,et al.Modeling constitutive relationship of Ti17 titanium alloy with lamellar starting microstructure[J].Materials Science and Engineering A,2012,538(11):182-189.
• [5] 陈刚，姚远超，贾寓真，等.30Cr4MoNiV超高强度钢热变形本构方程的构建与优化[J].材料导报，2022,36(21):194-200.CHEN Gang,YAO Yuan-chao,JIA Yu-zhen,et al.Construction and optimization of hot deformation constitutive equation of 30Cr4MoNiV ultra-high-strength steel[J].Materials Reports,2022,36(21):194-200.
• [6] 陈元芳，江华德，汤萌.38MnVTi钢本构方程及加工图[J].材料导报，2014,28(22):149-153.CHEN Yuan-fang,JIANG Hua-de,TANG Meng.Constitutive equation of 38MnVTi steel and processing maps[J].Materials Review,2014,28(22):149-153.
• [7] 曾卫东，周义刚，舒滢，等.基于加工图的Ti-40阻燃钛合金热变形机理研究[J].稀有金属材料与工程，2007,36(1):1-6.ZHENG Wei-dong,ZHOU Yi-gang,SHU Ying,et al.A study of hot deformation mechanisms in Ti-40 burn resistant titanium alloy using processing maps[J].Rare Metal Materials and Engineering,2007,36(1):1-6.
• [8] 肖梅，周正，黄光杰，等.AZ31镁合金的热变形行为及加工图[J].机械工程材料，2010,34(4):18-21.XIAO Mei,ZHOU Zheng,HUANG Guang-jie,et al.Hot deformation behavior and processing maps of AZ31 magnesium alloy[J].Materials for Mechanical Engineering,2010,34(4):18-21.
• [9] 张毅，刘平，田保红，等.基于热加工图的Cu-Ni-Si-P合金的高温热变形行为[J].材料热处理学报，2012,33(11):18-23.ZHANG Yi,LIU Ping,TIAN Bao-hong,et al.High temperature deformation behavior of Cu-Ni-Si-P alloy based on processing map[J].Transactions of Materials and Heat Treatment,2012,33(11):18-23.
• [10] 黄光胜，汪凌云，陈华，等.2618铝合金的热变形和加工图[J].中国有色金属学报，2005,15(5):763-767.HUANG Guang-sheng,WANG Ling-yun,CHEN hua,et al.Hot deformation and processing maps of 2618 aluminum alloy[J].The Chinese Journal of Nonferrous Metals,2005,15(5):763-767.
• [11] 孙文伟，张楚函，赵亚军，等.奥氏体不锈钢的热压缩本构方程及动态再结晶行为[J].机械工程材料，2022,46(6):49-56.SUN Wen-wei,ZHANG Chu-han,ZHAO Ya-jun,et al.Thermal compression constitutive equation and dynamic recrystallization behavior of austenitic stainless steel[J].Materials for Mechanical Engineering,2022,46(6):49-56.
• [12] 黄宽，张彦敏，周延军，等.Cu-15Ni-8Sn合金热变形行为及热加工图[J].材料热处理学报，2022,43(12):145-153.HUANG Kuan,ZHANG Yan-min,ZHOU Yan-jun,et al.Hot deformation behavior and hot processing map of Cu-15Ni-8Sn alloy[J].Transactions of Materials and Heat Treatment,2022,43(12):145-153.
• [13] 谢桂兰，王永威，朱戴博，等.Cu-15Ni-8Sn合金的热变形行为和热加工图[J].材料热处理学报，2023,44(3):184-195.XIE Gui-lan,WANG Yong-wei,ZHU Dai-bo,et al.Thermal deformation behavior and thermal processing map of Cu-15Ni-8Sn alloy[J].Transactions of Materials and Heat Treatment,2023,44(3):184-195.
• [14] Chen D,Yang Q R,Yang N C,et al.Hot compressive deformation and microstructural evolution of 60NiTi alloy[J].Transactions of Nonferrous Metals Society of China,2023,33(1):189-200.
• [15] 周计明，齐乐华，陈国定.热成形中金属本构关系建模方法综述[J].机械科学与技术，2005,24(2):212-216.ZHOU Ji-ming,QI Le-hua,CHEN Guo-ding.Investigation on the constitutive relationship of materials forming in high temperature[J].Mechanical Science and Technology,2005,24(2):212-216.
• [16] 熊毅，熊良银，张凌峰，等.GH4199合金的热变形行为与微观组织演变[J].中国有色金属学报，2010,20(4):655-661.XIONG Yi,XIONG Liang-yin,ZHANG Ling-feng,et al.Hot deformation behavior and microstructure evolution of superalloy GH4199[J].The Chinese Journal of Nonferrous Metals,2010,20(4):655-661.
• [17] Sellars C M,Mctegart W J.On the mechanism of hot deformation[J].Acta Metallurgica,1966,14(9):1136-1138.
• [18] McQueen H J,Yue S,Ryan N D,et al.Hot working characteristics of steels in austenitics state[J].Journal of Materials Processing Technology,1995,53(1/2):293-310.
• [19] Shi H,Mclaren A J,Sellars C M,et al.Constitutive equations for high temperature flow stress of aluminum alloys[J].Materials Science and Technology:MST:A publication of the Institute of Metals,1997,13(3):210-216.
• [20] 康福伟，王焕敏，张雪敏，等.4Cr5MoSiV1 钢的热变形行为及热加工图[J].材料科学，2013,3(1):1-6.KANG Fu-wei,WANG Huan-min,ZHANG Xue-min,et al.Hot deformation behavior and hot processing map of 4Cr5MoSiV1 steel[J].Material Sciences,2013,3(1):1-6.
• [21] Zener C,Hoilomon H.Effect of strain-rate upon the plastic flow of steel[J].Journal of Applied Physics,1944,15(1):22-27.
• [22] Prasad Y V R K,Cegel H L,Doraivelu S M,et al.Modeling of dynamic material behavior in hot deformation:Forging of Ti-6242[J].Metallurgical and Materials Transactions A,1984,15(10):1883-1892.
• [23] Prasad Y V R K,Seshacharyulu T.Processing maps for hot working of titanium alloys[J].Materials Science and Engineering A,1998,243(1/2):82-88.
• [24] Prasad Y V R K.Processing maps:A status report[J].Journal of Materials Engineering and Performance,2003,12(6):638-645.
• [25] Sivakesavam O,Prasad Y V R K.Hot deformation behaviour of as-cast Mg-2Zn-1Mn alloy in compression:a study with processing map[J].Materials Science and Engineering A,2003,362(1/2):118-124.
• [26] 尹振入，卢立伟，刘晓烨，等.预孪晶AQ80镁合金热压缩本构方程及热加工图[J].中国有色金属学报，2018,28(8):1523-1531.YI Zhen-ru,LU Li-wei,LIU Xiao-ye,et al.Constitutive equation and processing map of hot deformation for pre-twin AQ80 magnesium alloy[J].The Chinese Journal of Nonferrous Metals,2018,28(8):1523-1531.

文章评论(Comment)：