Microstructure Characterization and Indentation Hardness Testing Behavior of Mg-8Sn-xAl-1Zn Alloys
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2015年第5期
论文作者：程伟丽 WANG Miao XU Chunxiang ZHANG Jinshan LIANG Wei YOU Bongsun 聂凯波
文章页码：1043 - 1048
摘 要：The influence of Al content on microstructure characterization and indentation hardness testing behavior of Mg-8Sn-x Al（x=1 wt%, 2 wt%, 3 wt%）-1Zn alloys was investigated by optical microscope, Pandat software, X-ray diffraction, scanning electron microscope, differential scanning calorimetry and a microhardness testing equipment. The results can be summarized as follows: when the Al content is 1 wt%, the alloy is composed of α-Mg and Mg2 Sn phases; while the new phase of Mgx（Al Zn）1-x can be observed and the morphology of Mg2 Sn phase transfers from the semi-continuous network to the dispersed particles with further addition of Al content to 2 wt% and 3 wt%. The dendrite arm spacing（DAS） deceases firstly and then slightly increases with the increase of Al content. The micro-hardness of Mg-8Sn-x Al（x=1 wt%, 2 wt%, 3 wt%）-1Zn also increases with increasing of Al content. Moreover, the indentation size effect（ISE） in Vickers hardness for Mg-8Sn-1Al-1Zn alloy was observed with the applied test load ranging from 0.490 to 4.903 N.
程伟丽1,2，WANG Miao2，XU Chunxiang2，ZHANG Jinshan2，LIANG Wei2，YOU Bongsun3，聂凯波2
1. Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology2. School of Materials Science and Engineering, Taiyuan University of Technology3. Korea Institute of Materials Science
摘 要：The influence of Al content on microstructure characterization and indentation hardness testing behavior of Mg-8Sn-x Al（x=1 wt%, 2 wt%, 3 wt%）-1Zn alloys was investigated by optical microscope, Pandat software, X-ray diffraction, scanning electron microscope, differential scanning calorimetry and a microhardness testing equipment. The results can be summarized as follows: when the Al content is 1 wt%, the alloy is composed of α-Mg and Mg2 Sn phases; while the new phase of Mgx（Al Zn）1-x can be observed and the morphology of Mg2 Sn phase transfers from the semi-continuous network to the dispersed particles with further addition of Al content to 2 wt% and 3 wt%. The dendrite arm spacing（DAS） deceases firstly and then slightly increases with the increase of Al content. The micro-hardness of Mg-8Sn-x Al（x=1 wt%, 2 wt%, 3 wt%）-1Zn also increases with increasing of Al content. Moreover, the indentation size effect（ISE） in Vickers hardness for Mg-8Sn-1Al-1Zn alloy was observed with the applied test load ranging from 0.490 to 4.903 N.
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