损伤容限型TC4-DT钛合金性能  

Properties of Damage Tolerance TC4-DT Titanium Alloy

作　　者：郭萍[1,2] 赵永庆[1,2] 洪权[2] 曾卫东[1] 

机构地区：[1]西北工业大学,陕西西安710072 [2]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2013年第11期2367-2370,共4页Rare Metal Materials and Engineering

基　　金：国家重点基础研究发展计划项目"973"(2007CB613807);陕西省重点科技创新团队计划-钛合金研发创新团队(2012KCT-23)

摘　　要：研究了热处理制度对损伤容限型TC4-DT钛合金组织和性能的影响,对比分析了不同热处理制度与力学性能之间的内在关系,深入研究不同冷却速率对TC4-DT合金断裂韧性的影响。结果表明:不同热处理制度可以调节显微组织的参数,包括初生α含量、β晶粒尺寸以及片层α的尺寸等,从而对合金性能产生影响,从理论上分析了影响合金性能的关键因素,并通过断口分析了裂纹扩展方式。Microstructure and mechanical properties were researched under different heat-treatment conditions for damage tolerance TC4-DT alloy.The relation between the different microstructure parameters with mechanical properties was analyzed,and the influence of different cooling rates on fracture toughness of TC4-DT titanium alloy was investigated.The result shows that the heat-treatment can adjust the microstructure parameters,including the content of primary α,the dimension ofβ grains and the dimension of lamellar α,which can affect the properties of TC4-DT alloy.The factors that influence the properties were mainly analyzed theoretically,and the fracture surface was observed.

关 键 词：TC4-DT钛合金 显微组织 力学性能 断裂韧性 

分 类 号：TG146.23[一般工业技术—材料科学与工程]