Effect of CaB6 addition on the microstructure and mechanical properties of Ti-24Nb-4Zr-2.5Mn alloys fabricated by spark plasma sintering

被引：0

作者：

Zhang, Jing ^{[1
,2
]}

Lei, Shaofeng ^{[1
]}

An, Xuguang ^{[1
,2
]}

Xu, Xiwei ^{[1
]}

Chen, Bo ^{[1
]}

Li, Haishan ^{[1
]}

Yao, Weitang ^{[1
,2
]}

Wang, Qingyuan ^{[1
]}

Kong, Qingquan ^{[1
,2
]}

机构：

[1] Chengdu Univ, Sch Mech Engn, Chengdu 610106, Sichuan, Peoples R China

[2] Chengdu Univ, Inst Adv Study, Interdisciplinary Mat Res Ctr, Chengdu 610106, Sichuan, Peoples R China

来源：

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 30卷

基金：

中国国家自然科学基金;

关键词：

beta-Ti alloys; CaB6; Spark plasma sintering; Mechanical properties; Elastic modulus; POWDER-METALLURGY TITANIUM; TI-ALLOYS; OXYGEN; SCAVENGER; STRENGTH;

D O I：

10.1016/j.jmrt.2024.04.214

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Balancing the strength, ductility and Elastic modulus of beta-Ti alloys is still a great challenge for medical implantation, extremely limiting its further applications. Herein, we prepared a fine-grain beta-type Ti-24Nb-4Zr2.5Mn alloy with high performance by adding CaB 6 deoxidizer via mechanical alloying and spark plasma sintering. The effects of CaB 6 addition on the microstructure and mechanical properties were systematically investigated, and the results show that adding a trace amount of CaB 6 will form in -situ nano -sized CaTiO 3 particles and micro -sized (Ti,Nb)B 2 solid solution whiskers, which can significantly refine the grain size and inhibit the grain boundary movement and dislocation motion, thus improving the comprehensive mechanical properties of Ti-24Nb-4Zr-2.5Mn alloys. With a trace addition of 0.1 wt% CaB 6 , the Ti-24Nb-4Zr-2.5Mn alloy exhibits an excellent combination of high strength of -971 MPa, good ductility of -17.8% and low elastic modulus of -79.1 GPa. This work may provide a new methodology to prepare high-performance biomedical Ti alloys.

引用

页码：6123 / 6132

页数：10

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