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OALib Journal期刊
ISSN: 2333-9721
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往复挤压变形对ZK60镁合金力学性能的影响
, PP. 55-58
Keywords: ZK60,镁合金,往复挤压,织构
Abstract:
ZK60镁合金经350℃往复挤压8道次后，晶粒尺寸显著细化，平均晶粒尺寸从约20μm细化到约1.5μm，组织均匀性大大改善.经往复挤压后，丝织构转变为{10-13}〈30-32〉+{1 0 -1 1}〈1-543〉织构，且最大极密度下降.由于组织的细化和织构的改变，ZK60镁合金的室温轴向压缩屈服强度大幅度提高，轴向拉伸屈服强度有所下降，合金的拉压强度差异性基本消除;同时,合金的塑性明显提高，尤其是在压缩条件下，延伸率从15%增加到38%.
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