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Indexed by:期刊论文

Date of Publication:2017-04-05

Journal:JOURNAL OF ALLOYS AND COMPOUNDS

Included Journals:SCIE、EI

Volume:700

Page Number:159-168

ISSN No.:0925-8388

Key Words:Titanium alloy; Laser rapid prototyping; Composition design; Microstructure; Properties

Abstract:From the perspective of biomechanics and forming technology, Ti-Fe-Zr-Y alloys were designed using a "cluster-plus-glue-atom" model, and then the alloys were prepared by laser rapid prototyping on pure titanium substrate. The influences of Zr additions on microstructure and properties of the alloys were investigated. The results show that with the increasing of the Zr addition, the microstructure of the alloys changes sequentially from TiFe dendrite plus (beta-Ti+TiFe+Zr2Fe) eutectic to (beta-Ti+TiFe+Zr2Fe) eutectic to beta-Ti dendrite plus (beta-Ti+TiFe+Zr2Fe) eutectic, which leads to gradual decrease in the hardness and Young's modulus. The corrosion resistance firstly increases and then decreases, with the best corrosion resistance obtained at 5.86 at. % Zr addition. Compared with the binary Ti70.6Fe29.4 eutectic and Ti-6Al-4V alloys, the studied alloys present higher hardness, lower Young's modulus, and better corrosion resistance in Hank's solution. (C) 2017 Elsevier B.V. All rights reserved.