摘要
对铸态ZA2 7Ce合金进行固溶处理 ,获得单一均匀的固溶体后 ,分别进行 96℃ ,180℃和 2 5 0℃人工时效。采用悬挂弯曲共振法测量阻尼性能Q-1值 (阻尼本领 ) ,结果是 ,96℃人工时效后阻尼性能好于 180℃以及 2 5 0℃人工时效后的阻尼性能。利用SEM研究时效后微观组织 ,结果发现 ,96℃人工时效获得粒状组织 ,180℃以及2 5 0℃人工时效获得层片状组织。利用等轴晶界面滑动内耗机理分析认为 ,ZA2
After solid solution to as-cast ZA27Ce alloy, artificial aging at 96°C, 180°C, 250°C were applied to respectively. Q-1 (damping capacity) were measured as the damping properties with suspending flexural resonance method, the results showed us that the damping property after artificial aging at 96°C was better than that at 180°C and 250°C. Consequently microstructures were studied by the use of SEM, the results were that spheroidized structures were obtained by the artificial aging at 96°C, lamellar structures were obtained at 180°C and 250°C. In the end of the article, damping property of the spheroidized structure was thought to be better than that of the lamellar structure with the help of energy dissipation mechanism of the interfaces sliding of equiaxed crystals.
出处
《航空材料学报》
EI
CAS
CSCD
2001年第2期26-29,共4页
Journal of Aeronautical Materials
