海洋大气环境对钛合金TA15断裂韧度的影响  

Effect of Marine Atmosphere Environment on Fracture Toughness for TA15 Titanium Alloy

作　　者：舒畅[1] 张帷[1] 苏艳[1] 刘彬[2] 皮韬略[3] 

机构地区：[1]中国兵器工业第五九研究所,重庆400039 [2]中国人民解放军驻296厂军事代表室,重庆400054 [3]上海电力学院,上海200090

出　　处：《表面技术》2012年第6期54-57,共4页Surface Technology

基　　金：国防基础科研计划资助项目(A1020110014)

摘　　要：对TA15钛合金开展海洋平台户外大气暴露试验和海水飞溅试验,研究了海洋大气环境对钛合金断裂韧度的影响。结果表明:TA15钛合金的断裂韧度随海洋环境试验时间的延长,呈下降趋势;海水飞溅试验对材料断裂韧度的影响较大,经4年试验后,TA15的断裂韧度下降了10.4%,断口形貌显示材料的脆性增加。同时通过XPS分析,探讨了合金表面氧化层扩散产生的近表面效应。The effect of marine environment on fracture toughness for TA15 titanium alloy was studied by marine plat- form outdoor exposure test and marine splashing test. The results show that the fracture toughness for TA15 titanium alloy de- creases with increasing marine atmosphere environment test time. The effeet of marine splashing test for fracture toughness is bigger than marine platform outdoor exposure test. The fracture toughness of TA15 decreases 10.4% after 4 year＇ s marine splashing test, the embrittlement increases by fracture morphology analysis. The near surfaee effects were diseussed by XPS, most likely to be the diffusion of oxygen into the alloy.

关 键 词：TA15钛合金 断裂韧度 海洋平台户外大气暴露 海水飞溅 

分 类 号：TG111.91[金属学及工艺—物理冶金]