氢对2091合金力学性能及断裂行为的影响  

Effect of Hydrogen on the Mechanical Properties and Fracture Behavior of 2091 Al Li Alloy

作　　者：李仁顺[1] 田耘 陈廉[2] 

机构地区：[1]哈尔滨工业大学 [2]中国科学院金属研究所

出　　处：《金属热处理》1998年第1期16-18,共3页Heat Treatment of Metals

摘　　要：用动态充氢慢拉伸试验研究氢对２０９１铝锂合金力学性能的影响，用离子探针、透射电镜和扫描电镜研究合金的微观组织和断裂行为。结果表明，２０９１合金具有明显的氢脆敏感性，氢降低合金原子间结合能。合金氢脆敏感性和断裂特征与微观组织有密切关系。The effect of hydrogen on the mechanical properties of 2091 Al Li alloy was studied by simultaneous cathodic charging and slow straining tests. The microstructure and fracture behavior of 2091 Al Li alloy was studied by SIMS、TEM and SEM. It is shown that 2091 Al Li alloy has hydrogen embrittlement(HE) susceptibility,hydrogen caused the decrease of bond energy of 2091 Al Li alloy,the HE susceptibility and fracture characteristic of 2091 Al Li alloy correlates with microstructure.

关 键 词：铝锂合金 氢脆 沿晶断裂 2091合金 

分 类 号：TG146.21[一般工业技术—材料科学与工程]