Ti-Ta-Mo合金的制备及其力学性能  

Preparation of Ti-Ta-Mo alloy and its mechanical properties

作　　者：王彦龙 马昕宇 王庆相 WANG Yanlong;MA Xinyu;WANG Qingxiang(School of Materials Science and Engineering,Xi’an Polytechnic University,Xi’an 710048,China;Sino-Euro Materials Technologies of Xi’an Co.Ltd.,Xi’an 710018,China)

机构地区：[1]西安工程大学材料工程学院,陕西西安710048 [2]西安欧中材料科技有限公司,陕西西安710018

出　　处：《西安工程大学学报》2022年第6期31-37,共7页Journal of Xi’an Polytechnic University

基　　金：陕西省科技厅重点产业创新链项目(2019ZDLGY05-07)。

摘　　要：为了获得力学性能更优异的钛合金,将β相稳定元素Ta和Mo加入到Ti中,通过放电等离子烧结得到了不同元素含量的Ti-Ta-Mo合金,并系统研究了烧结温度和Ta、Mo元素含量对合金组织和力学性能的影响规律。结果表明:Ti-Ta-Mo合金的组织主要由α-Ti相和β-Ti相组成。随着烧结温度的升高,合金中的β相含量逐渐增多;随着Ta和Mo含量的增多,合金中β相的含量增多,晶粒尺寸减小;当烧结温度1 250℃,Ta和Mo的质量分数16%时,得到的合金硬度和密度较高。Ti-Ta-Mo合金的抗压强度和屈服强度随着烧结温度和β相稳定元素的增多而增大,弹性模量则呈相反趋势。In order to obtain titanium alloys with better mechanical properties, Ti-Ta-Mo alloys with different element contents were obtained by spark plasma sintering with the addition of β-phase stable elements Ta and Mo to Ti. The effects of sintering temperature and the content of Ta and Mo elements on the microstructure and mechanical properties of the alloy were systematically studied. The results show that the microstructure of Ti-Ta-Mo alloy is mainly composed of α-Ti phase and β-Ti phase. With the increase of sintering temperature, the β phase in the alloy increases gradually. With the increase of Ta and Mo contents, the content of β phase in the alloy increases and the grain size decreases. When the sintering temperature is 1 250 ℃ and the Ta and Mo content(mass fraction) is 16%, the hardness and density of the alloy are higher. The compressive strength and yield strength of Ti-Ta-Mo alloy increase with the increase of sintering temperature and β-phase stable elements, while the elastic modulus shows an opposite trend.

关 键 词：Ti-Ta-Mo合金 放电等离子烧结 显微组织 弹性模量 

分 类 号：TG146.23[一般工业技术—材料科学与工程]