Low temperature heat treatments on Ti-15Zr-xMo alloys

JOURNAL OF ALLOYS AND COMPOUNDS

卷:727

Article

Xavier, Caio Castanho^1,2  Nespeque Correa, Diego Rafael^1,2  Grandini, Carlos Roberto^1,2  Rocha, Luis Augusto^1,2,3 

[1] Univ Estadual Paulista, UNESP, Fac Ciencias Bauru, Bauru, SP, Brazil

[2] IBTN Br, Brazilian Branch, Inst Biomat Tribocorros & Nanomed, Bauru, SP, Brazil

[3] Univ Minho, Ctr MicroElectroMech Syst, MEMS UMinho, Campus Azurem, Guimaraes, Portugal

关键词: Titanium;    Alloys;    Heat treatment;    Biomaterials;   

DOI  :  10.1016/j.jallcom.2017.08.072

来源: Elsevier

【 摘 要 】

This paper regards the study of the effect of heat treatments on the microstructure and microhardness of Ti-15Zr-xMo alloys aimed to biomedical applications. The alloys were melted in an arc-furnace, with four different compositions in order to obtain samples with alpha', alpha'+beta and beta phase microstructures. The as-cast alloys exhibited a full lamellar structure for the Ti-15Zr, a bimodal structure composed by beta phase grains along with an alpha phase acicular structure at the grain boundaries for the Ti-15Zr-5Mo, predominant beta phase for the Ti-15Zr-10Mo and only beta phase for the Ti-15Zr-15Mo. Results showed that both micro-structure and mechanical properties of the studied alloys can be tailored by relatively low temperature heat treatments, as they resulted in the growth of the alpha' phase in all alloys. The formation of alpha' phase resulted in a decrease in the microhardness of the alloys. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

Free