Effect of mechanical alloying on microstructure and mechanical properties of Ti-24Nb-4Zr-3Mn alloys prepared by spark plasma sintering

被引：14
作者：
Wu, Jiang [1 ]
An, Xuguang [1 ,2 ]
Zhang, Jing [1 ,2 ]
Lei, Shaofeng [1 ]
Guo, Yi [1 ]
Xu, Xiwei [1 ]
Yao, Weitang [1 ,2 ]
Wang, Qingyuan [1 ,3 ]
Kong, Qingquan [1 ,2 ]
机构：
[1] Chengdu Univ, Sch Mech Engn, Chengdu 610106, Peoples R China
[2] Chengdu Univ, Inst Adv Study, Interdisciplinary Mat Res Ctr, Chengdu 610106, Peoples R China
[3] Sichuan Univ, Key Lab Sichuan Prov, Catastroph Mech & Engn Disaster Prevent, Chengdu 610065, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 927卷
基金：
中国国家自然科学基金;
关键词：
Mechanical alloying; Spark plasma sintering; Titanium alloys; Mechanical properties; CENTERED-CUBIC TITANIUM; TI-MN ALLOYS; FABRICATION; DESIGN; STRENGTH; MODULUS; PHASE; SHAPE;
D O I：
10.1016/j.jallcom.2022.167023
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In the present study, Ti-24Nb-4Zr-3Mn alloys were prepared by mechanical alloying and spark plasma sintering. With the increase of milling time, the particle size of alloy powder decreases, while the oxygen content shows the opposite trend. The excess O content will dramatically deteriorate the mechanical properties of Ti-24Nb-4Zr-3Mn alloy and should be strictly controlled in future studies. Among all the investigated alloys, Ti-24Nb-4Zr-3Mn alloy prepared by 20-hour milling powder (TNZM-20) shows ex-cellent comprehensive mechanical properties with a preferable compressive strength (similar to 2786 MPa) and constant strain (similar to 55.3 %), as well as a highest tensile strength (similar to 1148 MPa) and elongation (similar to 11.2 %), which attribute to the combined effect of almost full density, fine grain strengthening and solid solution strengthening together with dispersion strengthening provided by FCC phase. Interestingly, the excellent combination of high strength and low elastic modulus of metastable beta alloy can be obtained by manip-ulating the content of the FCC phase, providing a new approach for fabricating high-performance me-tastable beta Ti alloys.(c) 2022 Elsevier B.V. All rights reserved.
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页数：12
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