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OALib Journal期刊
ISSN: 2333-9721
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al和ca对变形镁合金性能的影响
Keywords: 金属材料,变形镁合金,添加元素,微观结构
Abstract:
？采用环境扫描电镜(esem)和能谱分析研究了添加元素al和ca对变形镁合金结构和性能的影响。结果表明，al是镁合金中强化相β相的组成元素，，β相呈片层状，片层与镁基体α相的基面平行或垂直。al含量的增加使镁合金中β相也增加，提高了镁合金的强度但降低了其塑性；ca主要分布于β相中，与mg结合生成mg2ca相，提高了β相的高温稳定性，改变了挤压后β相的形貌和分布，减少了再结晶过程中晶界β相的析出量，有效地提高了镁合金的塑性，但是使强度稍有降低.
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