摘要
采用金相分析、拉伸实验、动态机械热分析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)三种不同热处理工艺对挤压态AZ61镁合金显微组织、力学性能及阻尼性能的影响。研究表明:与挤压态的AZ61镁合金相比,T5态与T6态的强度明显提高,且T6态仍保持了一定的塑性;T4态虽未提高其强度,但提升了合金的伸长率。而在阻尼性能方面,挤压态和T5态的阻尼性能较差,T4态和T6态与应变相关部分的阻尼得到了大幅度提升。通过Granato-Lücke理论可以很好的解释不同热处理工艺对AZ61镁合金阻尼性能的影响规律。
The influence of solution treatment,aging treatment and solution-aging treatment on microstructure,mechanical and damping properties of AZ61 alloy was investigated by using optical microscope,tensile test and dynamic mechanical analyzer.Compared with the extrusion state,the strength of the alloy in aging state and solution aging state was markedly improved,and the elongation of the alloy after solution treatment followed by aging decreases slightly,however the solution treatment improves elongation and decreases strength of the AZ61 alloy. The damping property ofthe AZ61 alloy compared with that under extrusion state and aging state, solution treatment and solution aging treatment is markedly improved. The influence of heat treatment on damping property of AZ61 alloy can be explained by the Granato-Lücke theory.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2009年第4期99-102,共4页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(10876045)
重庆市科技攻关计划项目(cstc
2008AB4114)
国家重点基础研究发展计划"973"资助项目(2007CB613704)
国家自然科学杰出青年基金资助项目(50725413)
