Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第19卷    第5期    总第122期    2009年5月

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文章编号:1004-0609(2009)05-0821-05
加工工艺对ZK60镁合金力学性能和阻尼性能的影响
王敬丰1, 2,高  珊1, 2,潘复生1,汤爱涛1, 2,丁培道1

(1. 重庆大学 国家镁合金材料工程技术研究中心,重庆 400044;
2. 重庆大学 材料科学与工程学院,重庆 400044
)

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。

 

关键字: 镁合金;力学性能;阻尼性能;位错

Influence of process technology on mechanical and
damping properties of ZK60 magnesium alloys
WANG Jing-feng1, 2, GAO Shan1, 2, PAN Fu-sheng1, TANG Ai-tao1, 2, DING Pei-dao1

1. National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400044, China;
2. College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

Abstract: 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.

 

Key words: ZK60 magnesium alloys; mechanical properties; damping capacity; dislocation

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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