淬火、时效温度对TC4钛合金组织和力学性能的影响  

Influence of quenching and aging temperature on microstructure and mechanical properties of TC4 titanium alloy

作　　者：顾晓辉[1] 刘君[2] 石继红[1] 

机构地区：[1]沈阳航空航天大学航空宇航工程学院,辽宁沈阳110136 [2]中航沈阳黎明航空发动机(集团)有限责任公司精密锻造厂,辽宁沈阳110043

出　　处：《金属热处理》2011年第2期29-33,共5页Heat Treatment of Metals

摘　　要：通过对TC4钛合金进行两相区淬火+时效处理,观察分析了不同工艺处理后的显微组织,并进行了拉伸、冲击试验,探讨淬火、时效温度对其组织和力学性能的影响。结果表明,合金的显微组织随淬火温度和时效温度升高粗化。合金强度随淬火温度升高先增加后降低,合金的塑性、冲击韧性随淬火温度升高不断降低;在相同淬火温度下,合金的强度随时效温度升高而降低,合金的塑性、冲击韧性随时效温度的升高先增加后降低。Influence of quenching and aging temperature on microstructure and mechanical properties of TC4 titanium alloy was investigated through microstructure observation and mechanical property test.The results show that with increasing quenching and aging temperature,the microstructure of the alloy becomes coarse.The strength increases first then decreases with quenching temperature increasing and the plasticity and toughness decrease with quenching temperature increasing.Quenched at the same temperature,the strength decreases and plasticity and toughness increase first and then decrease with aging temperature increasing.

关 键 词：TC4钛合金 淬火 时效 显微组织 力学性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]