| Mg-12Li-3Gd-3Y-0.6Zr镁合金的均匀化研究 |
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| 引用本文： | 冯剑,黄金亮,贾玉鑫.Mg-12Li-3Gd-3Y-0.6Zr镁合金的均匀化研究[J].兵器材料科学与工程,2014(1):82-86. |
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| 作者姓名： | 冯剑 黄金亮 贾玉鑫 |
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| 作者单位： | 河南科技大学材料科学与工程学院; |
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| 摘 要： | 为改善铸态Mg-12Li-3Gd-3Y-0.6Zr合金的力学特性,对铸锭进行均匀退火处理。采用金相显微镜、SEM、XRD、显微硬度测试和拉伸力学特性测试,观察和研究了试验合金的微观组织和力学特性。结果表明:最佳的均匀化退火工艺为500℃×8 h,均匀化退火后合金的抗拉强度由铸态的114 MPa提高到133 MPa。第二相形态及分布的改变是Mg-12Li-3Gd-3Y-0.6Zr合金力学特性改变的主要原因。
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| 关 键 词： | 镁锂合金 均匀化 微观组织 力学特性 |
Homogenizing annealing of Mg-12Li-3Gd-3Y-0.6Zr magnesium alloy |
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| FENG Jian;HUANG Jinliang;JIA Yuxin.Homogenizing annealing of Mg-12Li-3Gd-3Y-0.6Zr magnesium alloy[J].Ordnance Material Science and Engineering,2014(1):82-86. |
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| Authors: | FENG Jian;HUANG Jinliang;JIA Yuxin |
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| Affiliation: | FENG Jian;HUANG Jinliang;JIA Yuxin;School of Material Science and Engineering,Henan University of Science and Technology; |
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| Abstract: | In order to improve the mechanical properties of as-cast Mg-12Li-3Gd-3Y-0.6Zr magnesium alloy,homogenizing annealing treatment was carried out. The microstructure and mechanical properties of the alloy were studied using optical microscopy,SEM,XRD,microhardness tester and tensile tester. The results show that the optimal homogenization process is 500 ℃×8 h. The tensile strength of the annealed alloy increases to 133 MPa from 114 MPa of the as-cast. The fine morphology and precipitation of the second phase can explain the mechanical properties improvement of Mg-12Li-3Gd-3Y-0.6Zr alloy. |
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| Keywords: | Mg-Li alloy homogenizing annealing microstructure mechanical properties |
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