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Effect of Al-5Ti-1B grain refiner on microstructure and hardness of V-Al alloys for hydrogen separation
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1.SchoolSofSMechanicalSEngineering and Rail Transit,ChangzhouSUniversity;2.School of Materials Science and Engineering,Anhui University of Technology

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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.

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[Jiang Peng, Huang Huanchao, Ren Wenyue, Song Guangheng, Liu Hui, Pan Haijun, 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.]
DOI:10.12442/j. issn.1002-185X.20200930

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History
  • Received:December 02,2020
  • Revised:December 27,2020
  • Adopted:January 15,2021
  • Online: September 07,2021
  • Published: August 31,2021