ZE42镁合金板材拉伸变形行为和热加工图
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摘要
采用带有加热装置的MTS810液压伺服拉伸试验机,研究了ZE42镁合金板材的高温拉伸变形行为,应变速率的取值为0.000 3～0.17s~(-1),变形温度为300～450℃,采用Z参数和材料动态模型(DMM)建立了本构方程和热加工图。结果表明,ZE42镁合金板材热拉伸变形的平均激活能值为161kJ/mol,避开加工失稳区,ZE42镁合金板材热拉伸的稳态流变温度区间和应变速率区间分别为380～440℃和0.000 3～0.01s~(-1)。
Tensile deformation behavior of ZE42 magnesium alloy at elevated temperature was investigated by MTS-810hydraulic servo tensile tester with heating at 300～450℃and 3.0×10~(-4)～0.17s~(-1).Both constitutive equation and processing map were established using Zparameter and material dynamic model(DMM).The results show that the ZE42magnesium alloy sheet can avoid the instability zone when the average activation energy of thermal tensile deformation is 161kJ/mol.The steady rheological parameters of temperature and strain rate under hot tensile condition is in range of 380～440℃and 0.000 3～0.01s~(-1),respectively.
Tensile deformation behavior of ZE42 magnesium alloy at elevated temperature was investigated by MTS-810hydraulic servo tensile tester with heating at 300～450℃and 3.0×10~(-4)～0.17s~(-1).Both constitutive equation and processing map were established using Zparameter and material dynamic model(DMM).The results show that the ZE42magnesium alloy sheet can avoid the instability zone when the average activation energy of thermal tensile deformation is 161kJ/mol.The steady rheological parameters of temperature and strain rate under hot tensile condition is in range of 380～440℃and 0.000 3～0.01s~(-1),respectively.
引文
[1]王忠军,付学丹,朱晶,等.ZK60和ZK60-1.0Er镁合金热压缩变形和加工图[J].材料工程,2017,45(3):102-111.
[2]吴国华,陈玉狮,丁文江.镁合金在航空航天领域研究应用现状与展望[J].载人航天,2016,22(3):281-292.
[3]刘秋香.压力作用下镁及镁铝合金的结构演化研究[D].河北秦皇岛:燕山大学,2012.
[4]王忠军,范明达,朱晶,等.退火参数对ZE42镁合金热挤压板显微组织结构的影响[J].稀有金属,2012,36(4):659-664.
[5] SPIGARELL I S,RUANO O A,EL MEHTEDI M,et al.High temperature deformation and microstructural instability in AZ31magnesium alloy[J].Materials Science&Engineering,2013A:135-148.
[6] NIE X,DONG S,WANG F H,et al.Effects of holding time and Zener-Hollomon parameters on deformation behavior of cast Mg-8Gd-3Yalloy during double-pass hot compression[J].Journal of Materials Science&Technology,2018,34(11):2 035-2 041.
[7] JIA W T,LE Q C,TANG Y,et al.Role of pre-vertical compression in deformation behavior of Mg alloy AZ31Bduring super-high reduction hot rolling process[J].Journal of Materials Science&Technology,2018,34(11):2 069-2 083.
[8] WANG L,ZHAOB Y Q,ZHANG J,et al.Quantitative analysis on friction stress of hot-extruded AZ31magnesium alloy at room temperature[J].Journal of Materials Science&Technology,2018,34(10):1 765-1 772.
[9]申利权,杨旗,靳丽,等.AZ31B镁合金在高应变速率下的热压缩变形行为和微观组织演变[J].中国有色金属学报,2014,24(9):2 195-2 204.
[10]刘筱,娄燕,李落星,等.AZ31镁合金热压缩过程中晶粒取向和织构的演变[J].中国有色金属学报,2012,22(8):2 141-2 147.
[11] LOU Y,CHEN H,KE C X,et al.Hot tensile deformation characteristics and processing map of extruded AZ80 Mg alloys[J].JMEPEG,2014,123:1 904-1 914.
[12]王怀国.镁合金热裂行为研究进展[J].材料导报,2014,28(19):84-90.
[13] ANBU SELVAN S,RAMANATHAN S.Hot work ability of ascast and extruded ZE41A magnesium alloy using processing maps[J].Science Direct,2011,21:257-264.
[14] XUE Y,ZHANG Z,LU G,et al.Study on flow stress model and processing map of homogenized Mg-Gd-Y-Zn-Zr alloy during thermomechanical processes[J].JMEPEG,2014,24(2):946-971.
[15]廖慧敏.AZ81E镁合金的高温流变应力模型及热加工图研究[J].西华大学学报,2013,32(3):10-14.
[2]吴国华,陈玉狮,丁文江.镁合金在航空航天领域研究应用现状与展望[J].载人航天,2016,22(3):281-292.
[3]刘秋香.压力作用下镁及镁铝合金的结构演化研究[D].河北秦皇岛:燕山大学,2012.
[4]王忠军,范明达,朱晶,等.退火参数对ZE42镁合金热挤压板显微组织结构的影响[J].稀有金属,2012,36(4):659-664.
[5] SPIGARELL I S,RUANO O A,EL MEHTEDI M,et al.High temperature deformation and microstructural instability in AZ31magnesium alloy[J].Materials Science&Engineering,2013A:135-148.
[6] NIE X,DONG S,WANG F H,et al.Effects of holding time and Zener-Hollomon parameters on deformation behavior of cast Mg-8Gd-3Yalloy during double-pass hot compression[J].Journal of Materials Science&Technology,2018,34(11):2 035-2 041.
[7] JIA W T,LE Q C,TANG Y,et al.Role of pre-vertical compression in deformation behavior of Mg alloy AZ31Bduring super-high reduction hot rolling process[J].Journal of Materials Science&Technology,2018,34(11):2 069-2 083.
[8] WANG L,ZHAOB Y Q,ZHANG J,et al.Quantitative analysis on friction stress of hot-extruded AZ31magnesium alloy at room temperature[J].Journal of Materials Science&Technology,2018,34(10):1 765-1 772.
[9]申利权,杨旗,靳丽,等.AZ31B镁合金在高应变速率下的热压缩变形行为和微观组织演变[J].中国有色金属学报,2014,24(9):2 195-2 204.
[10]刘筱,娄燕,李落星,等.AZ31镁合金热压缩过程中晶粒取向和织构的演变[J].中国有色金属学报,2012,22(8):2 141-2 147.
[11] LOU Y,CHEN H,KE C X,et al.Hot tensile deformation characteristics and processing map of extruded AZ80 Mg alloys[J].JMEPEG,2014,123:1 904-1 914.
[12]王怀国.镁合金热裂行为研究进展[J].材料导报,2014,28(19):84-90.
[13] ANBU SELVAN S,RAMANATHAN S.Hot work ability of ascast and extruded ZE41A magnesium alloy using processing maps[J].Science Direct,2011,21:257-264.
[14] XUE Y,ZHANG Z,LU G,et al.Study on flow stress model and processing map of homogenized Mg-Gd-Y-Zn-Zr alloy during thermomechanical processes[J].JMEPEG,2014,24(2):946-971.
[15]廖慧敏.AZ81E镁合金的高温流变应力模型及热加工图研究[J].西华大学学报,2013,32(3):10-14.