| 热处理对损伤容限型TC4钛合金疲劳性能的影响 |
| |
| 引用本文： | 徐瑕,万明攀,苏婷,赵婧,赵兴君.热处理对损伤容限型TC4钛合金疲劳性能的影响[J].现代机械,2011(4):70-72. |
| |
| 作者姓名： | 徐瑕 万明攀 苏婷 赵婧 赵兴君 |
| |
| 作者单位： | 贵州大学材料科学与冶金工程学院,贵州贵阳,550003 |
| |
| 基金项目： | 贵大SRT字2009(087);贵大自青基合字(2009)057号,2009筑科工合同字第1-046号 |
| |
| 摘 要： | 本文利用光学显微镜(OM)、扫描电子显微镜(SEM)研究了不同的状态下损伤容限型TC4钛合金的疲劳性能。结果表明:损伤容限型TC4钛合金经过995℃/1hAC+550℃/4 h处理后得到魏氏组织,并且疲劳性能比原始状态和经900℃/1hAC+550℃/4h处理后都要好。从疲劳断口观察到,预裂区和快速扩展区主要是以微区解理断裂为主,稳态扩展区主要是以疲劳条带扩展机制为主,同时也存在微区解理断裂机制。
|
| 关 键 词： | 热处理 TC4钛合金 疲劳性能 断口 |
Effects of Heat Treatment on Fatigue Properties of TC4 Alloy in Damage Tolerance Type |
| |
| XU Xia,WANG Mingpan,SU Ting,ZHAO Jing,ZHAO Xingjun.Effects of Heat Treatment on Fatigue Properties of TC4 Alloy in Damage Tolerance Type[J].Modern Machinery,2011(4):70-72. |
| |
| Authors: | XU Xia WANG Mingpan SU Ting ZHAO Jing ZHAO Xingjun |
| |
| Affiliation: | XU Xia,WANG Mingpan,SU Ting,ZHAO Jing,ZHAO Xingjun |
| |
| Abstract: | The fatigue properties of TC4 alloy in damage tolerance type after different heat treatment were studied by means of OM and SEM. The results show that the microstructures of TC4 alloy in damage tolerance type after 995℃/lhAC ＋550℃/4h solution and aging treatment were widmanstatten structure, which could get better fatigue properties. The cracks in the fore-crack region and the fast growth region were mainly in the form of micro-cleavage fracture ; and spreaded in the form of strip mechanism in the stable spread re- gion with some behaviors of micro-cleavage fracture by observing fatigue fracture. |
| |
| Keywords: | heat treatment TC4 titanium alloy fatigue properties fracture |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
