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江鹏,黄焕超,任文玥,宋广生,刘惠,潘海军,张屹.Al-5Ti-1B晶粒细化剂对V-Al氢分离合金显微组织和硬度的影响[J].稀有金属材料与工程(英文),2021,50(8):3035~3038.[Jiang Peng,Huang Huanchao,Ren Wenyue,Song Guangheng,Liu Hui,Pan Haijun and Zhang Yi.Effect of Al-5Ti-1B grain refiner on microstructure and hardness of V-Al alloys for hydrogen separation[J].Rare Metal Materials and Engineering,2021,50(8):3035~3038.]
Effect of Al-5Ti-1B grain refiner on microstructure and hardness of V-Al alloys for hydrogen separation
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Received:December 02, 2020  
DOI:
Key words: Hydrogen separation  V-Al alloy membranes  Grain refinement  Microstructure  hardness
Foundation item:国家自然科学基金(51705038, 51875002, 51875053)、中国博士后科学基金(2019M652158)和江苏省研究生科研与实践创新计划项目(KYCX20_2535)
Author NameAffiliation
Jiang Peng,Huang Huanchao,Ren Wenyue,Song Guangheng,Liu Hui,Pan Haijun and Zhang Yi  
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Abstract:
      5 wt% Al and 5 wt% Al-5Ti-1B (ATB) master alloy (grain refiner) were added into pure V to form V-5Al and V-5ATB alloy ingots by arc melting. Optical microscope (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM) and microhardness tester were used to analyze the microstructure and hardness variation of V-Al alloy before and after grain refinement. The results show that the grain size of V-5ATB alloy decreases obviously due to the precipitation of long needle-like second phases TiB. Compared with V-5Al alloy, the hardness of V-5TB alloy increases due to strengthening effect of solid solution, fine grain and hard TiB phase.