夏洪均,梁强,李平,李永亮

• 1:重庆工商大学机械工程学院
• 2:重庆工商大学工程训练中心

摘要(Abstract)：

采用Gleeble-3500热模拟实验机在变形温度为600～800℃和应变速率为0.01～10 s~(-1)时对HAl61-4-3-1铝黄铜合金进行等温热压缩实验,对实验所获得真实应力-应变曲线进行摩擦修正,并以修正后的应力应变数据构建了考虑应变补偿的Arrhenius本构模型。其次,根据修正的应力应变数据构建了应变为0.3、0.6和0.9时HAl61-4-3-1合金的热加工图,并结合变形后微观组织确定了合金的失稳区和安全加工区域。结果表明:该合金在实验范围内的最佳工艺参数为:600～800℃&0.01～0.1 s~(-1),660～740℃&0.1～10 s~(-1)和740～800℃&0.1～4 s~(-1),其变形机制主要为动态再结晶和动态回复。

关键词(KeyWords)： 挤压态HAl61-4-3-1合金;热压缩变形;本构方程;热加工图;显微组织演变

Abstract:

Keywords:

基金项目(Foundation): 重庆市教育委员会科学技术研究项目(KJQN201900836);; 制造装备机构设计与控制重庆市重点实验室开放课题(CTBU-KFJJ2018093,CTBU-KFJJ2019078)

作者(Author): 夏洪均,梁强,李平,李永亮

DOI: 10.13289/j.issn.1009-6264.2020-0342

参考文献(References)：

• [1] 马斌，李平，梁强.HNi55-7-4-2合金高温本构模型构建及应用[J].兵器材料科学与工程，2020,43(4):108-113.MA Bin,LI Ping,LIANG Qiang.Construction and application of high-temperature constitutive model of HNi55-7-4-2 alloy[J].Ordnance Material Science and Engineering,2020,43(4):108-113.
• [2] Wang M H,Wei K,Li X J,et al.Constitutive modeling for high temperature flow behavior of a high-strength manganese brass[J].Journal of Central South University,2018,25(7):1560-1572.
• [3] Liang Q,Liu X,Li P,et al.Hot deformation behavior and processing map of high-strength nickel brass[J].Metals,2020,10(6):782-800.
• [4] Liu N,Li Z,Li L,et al.Processing map and hot deformation mechanism of novel nickel-free white copper alloy[J].Transactions of Nonferrous Metals Society of China,2014,24(11):3492-3499.
• [5] 陈刚，段为樑，吴旭升.挤压态CuCr25合金热变形行为及加工图[J].湖南大学学报(自然科学版),2016,43(6):10-15.CHEN Gang,DUAN Wei-liang,WU Xu-sheng.Hot deformation behavior and processing maps of the extruded CuCr25 alloy[J].Journal of Hunan University (Natural Sciences),2016,43(6):10-15.
• [6] 杜令忠，徐滨士，董世运，等.轿车同步器齿环用HMn59-2-1-0.5合金的热处理工艺[J].金属热处理，2004,29(1):76-79.DU Ling-zhong,XU Bin-shi,DONG Shi-yun,et al.Heat treatment of HMn59-2-1-0.5 alloy used for car synchronic converter ring[J].Heat Treatment of Metals,2004,29(1):76-79.
• [7] Roebuck B,Lord J D,Brooks M,et al.Measurement of flow stress in hot axisymmetric compression tests[J].Materials at High Temperatures,2006,23(2):59-83.
• [8] 李萍，段园培，张青，等.基于摩擦修正的TB8合金热压缩流变应力行为分析[J].稀有金属，2009,33(2):137-141.LI Ping,DUAN Yuan-pei,ZHANG Qing,et al.Flow stress behavior of TB8 alloy under hot compression deformation based on friction correction[J].Chinese Journal of Rare Metals,2009,33(2):137-141.
• [9] 俞晓强，郑百林，杨彪，等.SHPB实验考虑绝热变形和端面摩擦的修正方法[J].航空动力学报，2018,33(10):72-80.YU Xiao-qiang,ZHENG Bai-lin,YANG Biao,et al.Correction method of SHPB experiment considering adiabatic deformation and interfacial friction effects[J].Journal of Aerospace Power,2018,33(10):72-80.
• [10] 张永刚，党进华，李红斌.Gleeble压缩试验摩擦修正研究[J].热加工工艺，2014,43(12):120-122.ZHANG Yong-gang,DANG Jin-hua,LI Hong-bin.Study on friction correction of compression test by using Gleeble[J].Hot Working Technology,2014,43(12):120-122.
• [11] Gholamzadeh A,Karimi Taheri A.The prediction of hot flow behavior of Al-6%Mg alloy[J].Mechanics Research Communications,2009,36:252-259.
• [12] Ebrahimi R,Najafizadeh A.A new method for evaluation of friction in bulk metal forming[J].Journal of Materials Processing Technology,2004,152(2):136-143.
• [13] Sellars C M,Mctegart W J.On the mechanism of hot deformation[J].Acta Metallurgica,1966,14(9):1136-1138.
• [14] Zener C,Hollomon J H.Effect of strain rate upon plastic flow of steel[J].Journal of Applied Physics,1944,15(1):22-32.
• [15] Lin Y C,Chen X M.A critical review of experimental results and constitutive descriptions for metals and alloys in hot working[J].Materials and Design,2011,32(4):1733-1759.
• [16] Prasad Y V R K,Gegel H L,Doraivelu S M,et al.Modeling of dynamic material behavior in hot deformation:Forging of Ti-6242[J].Metallurgical Transactions A,1984,15(10):1883-1892.
• [17] Prasad Y V R K,Rao K P.Processing maps and rate controlling mechanisms of hot deformation of electrolytic tough pitch copper in the temperature range 300-950 ℃[J].Materials Science and Engineering A,2005,391(1/2):141-150.
• [18] 潘佳.镍基超合金气阀坯电镦成形匀细晶调控方法及工艺参数优化[D].重庆：重庆大学，2015.PAN Jia.The adjusted method and optimization of process parameters for valve billet with Ni-based superalloy during the electric upsetting to achieve grain refinement and uniform distribution[D].Chongqing:Chongqing University,2015.
• [19] 夏知姿.基于微观行为研究的锰黄铜薄壁环型锻件工艺优化[D].重庆：重庆大学，2015.XIA Zhi-zi.Process optimization about thin-wall ring forging of manganese brass based on microstructure behaviors[D].Chongqing:Chongqing University,2015.
• [20] 马晶，张骁勇，高惠临.B+M/A复相组织X80大变形管线钢的预应变脆化[J].机械工程材料，2016,40(12):26-31.MA Jing,ZHANG Xiao-yong,GAO Hui-lin.Embrittlement of B+M/A dual phase X80 pipeline steel with large deformation during pre-strain[J].Materials for Mechanical Engineering,2016,40(12):26-31.
• [21] 李卿，郭鸿镇，赵张龙，等.GH4049合金的热加工图研究[J].重型机械，2012(3):86-89.LI Qing,GUO Hong-zhen,ZHAO Zhang-long,et al.Study on hot processing map of GH4049 alloy[J].Heavy Machinery,2012(3):86-89.

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