Formation of a metastable fcc phase and high Mg solubility in the Ti-Mg system by mechanical alloying

被引：30

作者：

Tejeda-Ochoa, A. ^{[1
,2
]}

Kametani, N. ^{[2
]}

Carreno-Gallardo, C. ^{[1
]}

Ledezma-Sillas, J. E. ^{[1
]}

Adachi, N. ^{[2
]}

Todaka, Y. ^{[2
]}

Herrera-Ramirez, J. M. ^{[1
]}

机构：

[1] Res Ctr Adv Mat CIMAV, Natl Lab Nanotechnol, Miguel de Cervantes 120, Chihuahua 31136, Chihuahua, Mexico

[2] Toyohashi Univ Technol, Dept Mech Engn, 1-1 Hibarigaoka,Tempaku Cho, Toyohashi, Aichi 4418580, Japan

来源：

POWDER TECHNOLOGY | 2020年 / 374卷

关键词：

Ti-Mg alloys; Solid solubility; Mechanical alloying; Metastable phase; CENTERED-CUBIC TITANIUM; POWDER-METALLURGY; CRYSTAL-STRUCTURE; MICROSTRUCTURE; COMPOSITES;

D O I：

10.1016/j.powtec.2020.07.053

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Titanium and magnesium elemental powders were processed by mechanical alloying to synthesize the nominal TixMg(100-x) (x = 100, 75, 50, 25 and 0 at.%) compositions. As a result, the solid solubility was successfully extended and nanostructured materials with a metastable fcc phase were obtained. The lattice parameter of this phase increased with the increment in the Mg content. Pure Ti showed the coexistence of the Ti (fcc) and Ti (hcp) phases. The Ti75Mg25 and Ti50Mg50 compositions revealed a complete phase transformation to the fcc phase, while the Ti25Mg75 composition presented a coexistence of Ti-Mg (fcc) and Mg (hcp) phases. The metastable fcc phase was formed owing to the partial dislocation accumulation caused by the heavy plastic deformation during the ball milling process. (C) 2020 Elsevier B.V. All rights reserved.

引用

页码：348 / 352

页数：5

共 35 条

[1] Synthesis of HCP, FCC and BCC structure alloys in the Mg-Ti binary system by means of ball milling [J].