| 冷却速率对多相透氢V-Ti-Ni合金的组织与性能的影响 |
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| 引用本文： | 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, 2018, 47(6): 1872-1877 |
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| 作者姓名： | 江鹏 袁同心 于彦东 |
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| 作者单位： | 常州大学机械工程学院,常州大学机械工程学院,哈尔滨理工大学材料科学与工程学院 |
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| 基金项目： | 江苏省自然科学基金资助(项目号BK20150268) |
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| 摘 要： | 本文研究了冷却速率对多相V55Ti30Ni15合金的显微组织、硬度和氢渗透性能的影响。V55Ti30Ni15合金显微组织由V(Ti, Ni)固溶体、NiTi和NiTi2化合物组成。凝固时冷却速率对合金的组织和性能有很大的影响。合金铸锭凝固过程中V(Ti,Ni)固溶体的体积分数随冷却速率的增大而减小,二次枝晶臂间距和宽度也呈现出同样的变化趋势。合金硬度随着冷却速率的升高不断增大,氢渗透率却随之降低。V-Ti-Ni多相合金400℃的氢渗透率与V(Ti, Ni)固溶体体积分数成线性关系。合金铸锭氢渗透率不仅与V(Ti, Ni)固溶体的相对含量有关,而且与固溶体中Ti、Ni合金元素含量和相界的体积有关。
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| 关 键 词： | V-Ti-Ni多相合金 显微组织 硬度 氢渗透率 |
| 收稿时间： | 2016-05-24 |
| 修稿时间： | 2016-07-03 |
Effect of Cooling Rate on Microstructures and Properties in the Multiphase V-Ti-Ni Alloys for Hydrogen Purifying |
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| 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 |
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| Authors: | Jiang Peng Yuan Yongxin Y u Yandong |
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| Affiliation: | School of Mechanical Engineering,Changzhou University,School of Mechanical Engineering,Changzhou University,School of Materials Science and Engineering,Harbin University of Science and Technology |
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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. |
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| Keywords: | multiphase V-Ti-Ni alloy microstructure hardness hydrogen permeability |
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