Synergistic Improvement in Ductility and Hot Nitric Acid Corrosion Resistance of LPBF Ti-6Al-4V Alloy via Hot Isostatic Pressing  

作　　者：Zheng Liu De-Chun Ren Lian-Min Zhang Ai-Li Ma Hai-Bin Ji Yu-Gui Zheng 

机构地区：[1]CAS Key Laboratory of Nuclear Materials and Safety Assessment,Institute of Metal Research,Chinese Academy of Sciences,Shenyang,110016,China [2]School of Materials Science and Engineering,University of Science and Technology of China,Shenyang,110016,China [3]Shi-Changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang,110016,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2025年第1期102-106,共5页金属学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.52101105,52373321);the IMR Innovation Fund(2023-PY03);the LingChuang Research Project of China National Nuclear Corporation(CNNC-LCKY-202274).

摘　　要：Laser powder bed fusion(LPBF)technology offers a promising solution to the fabricability challenges of titanium alloys;however,it introduces defects such as porosity and cracking.Here,we evaluated the effectiveness of hot isostatic pressing(HIP)in eliminating defects and enhancing the overall properties of LPBF Ti-6Al-4V alloy.Our findings indicated that LPBF Ti-6Al-4V alloy after HIP established better corrosion resistance and ductility.These improvements could be related to the decomposition ofαʹphase and the elimination of internal defects within alloy matrix.Furthermore,the application prospect of LPBF Ti-6Al-4V alloy in spent fuel reprocessing environment was expounded.

关 键 词：Laser powder bed fusion TI-6AL-4V Hot isostatic pressing Corrosion Mechanical properties 

分 类 号：TG172[金属学及工艺—金属表面处理]