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江鹏,袁同心,于彦东.冷却速率对多相透氢V-Ti-Ni合金的组织与性能的影响[J].稀有金属材料与工程(英文),2018,47(6):1872~1877.[Jiang Peng,Yuan Yongxin and Y u Yandong.Effect of Cooling Rate on Microstructures and Properties in the Multiphase V-Ti-Ni Alloys for Hydrogen Purifying[J].Rare Metal Materials and Engineering,2018,47(6):1872~1877.]
Effect of Cooling Rate on Microstructures and Properties in the Multiphase V-Ti-Ni Alloys for Hydrogen Purifying
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Received:May 24, 2016  Revised:July 03, 2016
DOI:
Key words: multiphase V-Ti-Ni alloy  microstructure  hardness  hydrogen permeability
Foundation item:江苏省自然科学基金资助(项目号BK20150268)
Author NameAffiliation
Jiang Peng,Yuan Yongxin and Y u Yandong  
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Abstract:
      Effect of cooling rete on microstructures, hardness and hydrogen permeation properties of V55Ti30Ni15 alloys were investigated in present study. The results indicate that the microstructures of the alloy consist of the V(Ti, Ni) solid solution and the NiTi and NiTi2 compounds. The cooling rate has significant effects on the microstructures and properties of V55Ti30Ni15 alloys. The volume fraction of V(Ti, Ni) solid solution and second dendrite arm width and spacing decrease with increasing in cooling rate. The hardness value increases with increasing cooling rate, but hydrogen permeability decreases. The hydrogen permeability of V55Ti30Ni15 alloy is linear relationship with the volume fraction of V(Ti, Ni) solid solution. The hydrogen permeability is not only relate to the volume fraction of V(Ti, Ni) solid solution but also the content of Ti and Ni and the volume of phase boundaries in V55Ti30Ni15 alloy.