多相V-Ti-Ni氢分离合金异步轧制组织与性能  

Microstructure and Properties of Multiphase V-Ti-Ni Alloys for Hydrogen Separation Alloy During Asynchronous Rolling

作　　者：江鹏[1] 谢寅生 刘惠[1] 任文玥 潘海军 吴王平[1] 王知鸷[1] 张屹 Jiang Peng;Xie Yinsheng;Liu Hui;Ren Wenyue;Pan Haijun;Wu Wangping;Wang Zhizhi;Zhang Yi(School of Mechanical Engineering and Rail Transit,Changzhou University,Changzhou 213164,China)

机构地区：[1]常州大学机械与轨道交通学院,江苏常州213164

出　　处：《稀有金属材料与工程》2022年第11期4207-4212,共6页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51705038,51875053);江苏省自然科学基金(BK20150268)。

摘　　要：研究了铸态和热处理态多相V_(60)Ti_(20)Ni_(20)氢分离合金的异步轧制性能,异速比对合金显微组织、硬度和织构系数的影响。结果表明,异步轧制工艺提升合金轧制性能的效果高于热处理工艺提升的效果。热处理加异步轧制能够有效大幅提升合金的轧制成形性能。合金异步轧制性能随着异速比增加而提高,合金的硬度几乎不随轧制异速比的变化而变化。高的轧制压下量下,合金呈现出明显流变特征,V基固溶体(Vss)和NiTi相变形量大,沿轧制方向变形伸长,成层状组织。随着合金轧制异速比增加,合金显微组织沿厚度方向逐渐出现低程度的不均匀变形,中心位置变形程度高于同步轧制。异步轧制沿厚度方向引入的剪切变形能在一定程度上弱化合金的轧制织构。The asynchronous rollability of as-cast and heat treated multiphase V_(60)Ti_(20)Ni_(20)alloys for hydrogen separation and the effects of different speed ratio on the microstructure,hardness and texture coefficient of the alloys were studied.The results show that the effect of asynchronous rolling process on improving the rollability of the alloys is higher than that of heat treatment process.Heat treatment plus asynchronous rolling can effectively improve the rollability of the alloys.The asynchronous rollability of the alloys increases with the increase of different speed ratio,and the hardness of the alloys hardly changes with the change of different speed ratio.The alloys show obvious rheological characteristics at high rolling reduction.V-based solid solution(Vss)and NiTi phase have large deformation and elongation along the rolling direction and form layered structure.With the increase of different speed ratio,the microstructure of the alloys gradually shows uneven deformation at a low degree along the thickness direction,and the deformation degree at the center is higher than that in synchronous rolling.The shear deformation introduced by asynchronous rolling along the thickness direction can weaken the rolling texture of the alloys to a certain extent.

关 键 词：多相V-Ti-Ni合金 氢分离 异步轧制 显微组织 织构系数 

分 类 号：TG146.413[一般工业技术—材料科学与工程]