热处理对ZK60镁合金力学和阻尼性能的影响

Influence of Heat Treatment on Mechanical and Damping Properties of As-Extruded ZK60 Magnesium Alloy

摘要:

采用显微组织观察、拉伸试验、阻尼测试等方法研究了时效处理（T5）、固溶处理（T4）及固溶后时效处理（T6）3种不同热处理工艺对挤压态ZK60镁合金显微组织、力学性能及阻尼性能的影响。研究发现：这3种不同的热处理工艺对ZK60镁合金的抗拉强度、屈服强度及延伸率有一定的影响，但均可使ZK60镁合金的阻尼性能得到不同程度的提高，3种不同热处理工艺对ZK60镁合金阻尼性能的影响规律可通过G-L理论很好解释。

Abstract:

The microstructure, mechanical and damping properties of ZK60 magnesium alloy in the solution treatment, ageing treatment and solution-ageing treatment states were investigated by using the optical microscope, tensile test and dynamic mechanical analyzer. The results show that the three heat treatments have some influences on the ultimate strength, the yield strength and the elongation of ZK60 magnesium alloys, and improve their damping properties to some extent. The influences of heat treatment technology on damping properties can be explained by the G-L theory.