| Mg-5.52Zn-1.73Nd-0.71Cd-0.5Zr镁合金的热变形组织和力学性能 |
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| 引用本文： | 刘先兰,刘楚明,张文玉,李慧中,曾苏民. Mg-5.52Zn-1.73Nd-0.71Cd-0.5Zr镁合金的热变形组织和力学性能[J]. 粉末冶金材料科学与工程, 2011, 0(6): 799-805 |
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| 作者姓名： | 刘先兰 刘楚明 张文玉 李慧中 曾苏民 |
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| 作者单位： | 中南大学材料科学与工程学院;湖南工学院机械系 |
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| 基金项目： | 国防科工委项目;湖南省自然科学基金资助项目(10JJ6067);湖南省科技计划项目(2011FJ3072) |
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| 摘 要： | 采用Gleeble-1500热模拟机研究Mg-Zn-Nd-Cd-Zr合金在温度为300～420℃、应变速率为0.001～1S-1、最大变形程度为80％的条件下的高温变形行为.采用光学显微镜及透射电镜研究Mg-Zn-Nd-Cd-Zr镁合金在不同压缩变形条件下的组织形貌特征.结果表明:在实验条件下,合金的流变应力-应变曲线...
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| 关 键 词： | 镁合金 热模拟变形 动态再结晶 力学性能 |
Hot-compression deformation microstructure and mechanical properties of Mg-5.52Zn1.73Nd-0.71Cd-0.5Zr magnesium alloy |
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| LIU Xian-lan,LIU Chu-ming,ZHANG Wen-yu,LI Hui-zhong,ZENG Su-min. Hot-compression deformation microstructure and mechanical properties of Mg-5.52Zn1.73Nd-0.71Cd-0.5Zr magnesium alloy[J]. materials science and engineering of powder metallurgy, 2011, 0(6): 799-805 |
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| Authors: | LIU Xian-lan LIU Chu-ming ZHANG Wen-yu LI Hui-zhong ZENG Su-min |
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| Affiliation: | 1 (1.School of Material Science and Engineering,Central South University,Changsha 410083,China; 2.Department of Mechanical Engineering,Hunan Institute of Technology,Hengyang 421002,China) |
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| Abstract: | The flow stress features of Mg-Zn-Nd-Cd-Zr alloy were investigated by isothermal compression of cylindrical specimen at 300～420 ℃ and strain rate of 0.001～1 s-1 under maxium strain of 80%with Gleeble-1500 simulated machine.The microstructure of the experimental alloy in the hot-compression procedure at elevated temperatures was analyzed by OM(optical microscope) and TEM(transmission electron microscope).The results show that the peak flow stress becomes larger with the increasing strain rate at constant temperature,and gets smaller with the increasing deformation temperature at constant strain rate.The alloy can be extruded successfully at 360 ℃ with σb of 310 MPa,σ0.2 of 290 MPa,and δ of 16%. |
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| Keywords: | Mg-Zn-Nd-Cd-Zr magnesium alloy hot-compression dynamic recrystallization mechanical properties |
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