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中文摘要：
采用显微组织观察、拉伸实验和阻尼测试等方法研究了一次挤压、二次挤压及锻造这3种不同塑性加工工艺对ZK60镁合金的显微组织、力学性能及阻尼性能的影响。结果表明：ZK60变形镁合金经3种塑性加工工艺处理后，不同变形态间的抗拉强度、屈服强度及伸长率相差不大，但其阻尼性能却发生显著变化，其中锻造态ZK60镁合金的阻尼性能相对于挤压态的提高2倍多；采用G—L理论分析3种不同变形加工工艺对ZK60镁合金阻尼性能的影响规律。
英文摘要：
The microstructure, mechanical properties and damping properties of ZK60 magnesium alloy in the first extrusion, second extrusion and forging states were investigated by optical microscopy, tensile test and dynamic mechanical analyzer. The results show that the three different processes technologies have little influences on the ultimate strength, yield strength and elongation of ZK6 magnesium alloy, but the damping properties of the ZK60 magnesium alloys change obviously after the three different processes technologies. The damping properties of ZK60 magnesium alloy in forging state are twice more than those in extrusion state. The influences of processes technology on the damping properties can be explained by G-L theory.
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