Mo、V、Cr对钛合金β相的合金化效应  

Alloying Effect of Mo,V and Cr on Titanium Alloy Beta Phase

作　　者：葛鹏[1] 吴欢[1] 赵永庆[1] 

机构地区：[1]西北有色金属研究院,陕西西安710016

出　　处：《中国材料进展》2016年第10期795-798,共4页Materials China

基　　金：陕西省重点科技创新团队计划(钛合金研发创新团队)(2012KCT-23);科技部"973"项目(2007CB613805)

摘　　要：为了研究钛合金中常用β合金元素Mo、V、Cr等对β相合金化的影响,通过设计制备一系列不同元素含量的TiMo、Ti-V、Ti-Cr二元β型钛合金,分析了含单一合金化元素的β型钛合金的显微组织、硬度及室温拉伸性能。结果发现:随着合金中β稳定元素含量的增加,所有二元合金的晶格常数及晶粒尺寸都呈减小的趋势,其中元素Cr具有最强烈的减小晶格常数效应,而元素Mo对晶粒细化的效果最显著。成分为Ti-xV、Ti-xCr的β相的拉伸强度随元素含量增加的变化规律与硬度变化相似,先减小后增加。Ti-xMo拉伸强度则随元素含量的增加强度升高。元素Cr对β相的强化效果高于Mo和V。In order to study the influence of usual beta elements Mo, V, Cr in titanium alloy on alloying effect of beta phase, a series of binary beta titanium alloys such as Ti-Mo, Ti-V and Ti-Cr were designed and prepared. The microstructure, hardness and room temperature tensile property of beta titanium alloys containing single beta element were tested. Results showed that ： With the increase of the content of beta alloying elements, the lattice constant and grain size of all binary alloys decrease ; the element Cr has the most strongly reduced lattice constant effect, while the effect of element Mo on grain refinement is most notable; The tensile strength and hardness of β phase of Ti-xV and Ti-xCr alloys firstly decrease, then increase with the content of beta elements increasing, and the tensile strength of β phase of Ti-xMo alloy increases linearly; The strengthe- ning effect of element Cr for beta phase is higher than that of Mo and V.

关 键 词：钛合金 合金元素 Β相 强化 

分 类 号：TG146.23[一般工业技术—材料科学与工程]