Cavitation erosion resistance and ratio of elastic deformation energy to total deformation energy for Ti_3Al and TiNiNb alloys  

作　　者：龙霓东 朱金华 

机构地区：[1]State Key Laboratory for Mechanical Behavior of Materials [2]Engineering Institute, Air Force Engineering University, Xi'an 710038, China [3]State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049, China

出　　处：《中国有色金属学会会刊：英文版》2004年第1期49-52,共4页Transactions of Nonferrous Metals Society of China

基　　金：Project( 5 983 10 3 0 )supportedbytheNationalNaturalScienceFoundationofChina;Project(G19990 65 0 )supportedbytheStateKeyFundamentalResearchandDevelopmentProgramofChina

摘　　要：The cavitation erosion of Ti 46Ni 9Nb alloy, Ti 24Al 15Nb 1Mo alloy and 0Cr13Ni5Mo stainless steel has been investigated in tap water by using rotating disc equipment. It is shown that Ti 24Al 15Nb 1Mo alloy has the highest cavitation erosion resistance among the three tested materials and Ti 46Ni 9Nb alloy is more resistant to cavitation erosion than 0Cr13Ni5Mo stainless steel. To simulate the effect of collapse of vapor cavities or bubbles, the Rockwell hardness tester was used to exert a load on the small area of the tested materials, and the elastic deformation energy and total deformation energy in indentation were determined. The experiment results show that there is a good correlation between cavitaton erosion resistance and the ratio of elastic deformation energy to total deformation energy in indentation for the three tested materials. The higher the ratio, the better the cavitation erosion resistance.The cavitation erosion of Ti 46Ni 9Nb alloy, Ti 24Al 15Nb 1Mo alloy and 0Cr13Ni5Mo stainless steel has been investigated in tap water by using rotating disc equipment. It is shown that Ti 24Al 15Nb 1Mo alloy has the highest cavitation erosion resistance among the three tested materials and Ti 46Ni 9Nb alloy is more resistant to cavitation erosion than 0Cr13Ni5Mo stainless steel. To simulate the effect of collapse of vapor cavities or bubbles, the Rockwell hardness tester was used to exert a load on the small area of the tested materials, and the elastic deformation energy and total deformation energy in indentation were determined. The experiment results show that there is a good correlation between cavitaton erosion resistance and the ratio of elastic deformation energy to total deformation energy in indentation for the three tested materials. The higher the ratio, the better the cavitation erosion resistance.

关 键 词：TI3AL合金 TININB合金 弹性变形能 气穴腐蚀 钛合金 

分 类 号：TG172.9[金属学及工艺—金属表面处理] TG146.23[金属学及工艺—金属学]