Microstructure and Mechanical Properties of Mg-5.0Y-3.0Nd-0.5Zr Alloy

Liu Juan; Xia Changqing; Wu Anru; Dai Xiaoyuan; Peng Xiaomin

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Microstructure and Mechanical Properties of Mg-5.0Y-3.0Nd-0.5Zr Alloy
Issue 9, Pages: 720-721(2007)
Published： 2007 ，
DOI：

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[1]刘娟,夏长清,吴安如,戴晓元,彭小敏.Mg-5.0Y-3.0Nd-0.5Zr合金铸态组织和力学性能研究[J].特种铸造及有色合金,2007(09):720-721+655.

Liu Juan, Xia Changqing, Wu Anru, et al. Microstructure and Mechanical Properties of Mg-5.0Y-3.0Nd-0.5Zr Alloy. [J]. Special Casting & Nonferrous Alloys (9):720-721(2007)
[1]刘娟,夏长清,吴安如,戴晓元,彭小敏.Mg-5.0Y-3.0Nd-0.5Zr合金铸态组织和力学性能研究[J].特种铸造及有色合金,2007(09):720-721+655. DOI：

Liu Juan, Xia Changqing, Wu Anru, et al. Microstructure and Mechanical Properties of Mg-5.0Y-3.0Nd-0.5Zr Alloy. [J]. Special Casting & Nonferrous Alloys (9):720-721(2007) DOI：

摘要

对Mg-5.0Y-3.0Nd-0.5Zr镁合金进行熔铸和不同温度的均匀化退火

测试该合金的室温力学性能。并采用金相显微镜、扫描电镜等观察铸态和均匀化退火态组织。结果表明

添加Nd和Y能使镁合金的铸态组织得到细化

Nd和Y分别以Mg41Nd5和Mg24Y5化合物形式存在

均匀化退火后

试验合金抗拉强度和伸长率得到提高。其中450℃的均匀化退火效果最好

合金的抗拉强度比铸态时的提高了24.5%

伸长率提高了116.7%。

Abstract

The ambient tensile properties of the Mg-5.0Y-3.0Nd-0.5Zr alloy in the condition of casting and homogeneously annealing at different temperatures were tested

and its as-cast microstructure and annealed microstructure were observed by optical microscope and scanning electron microscope. The results indicate that the as-cast microstructure of the magnesium alloy can be refined as a result of occurrence of Mg41Nd5 phase and Mg24Y5 phase in the grain boundary. The tensile strength and elongation of homogeneously annealed alloy can be improved

in which the desirable tensile properties

such as tensile strength increase by 18.6% and elongation increase by 3.5% comparing with that of as-cast ones

can be obtained with homogeneously annealing at 450 ℃.