Stress-induced ordering by oxygen interstitial atoms in β Ti-20Zr-Mo alloys

被引：0

作者：

Kuroda, Pedro Akira Bazaglia ^{[1
,4
]}

da Silva, Marcos Ribeiro ^{[2
]}

Grandini, Carlos Roberto ^{[3
]}

机构：

[1] UFSCar Univ Fed Sao Carlos, Mat Engn Dept DEMa, BR-3565905 Sao Carlos, SP, Brazil

[2] IFSP Fed Inst Educ Sci & Technol Sao Paulo, BR-14804296 Araraquara, SP, Brazil

[3] UNESP Univ Estadual Paulista, Lab Anelasticidade & Biomat, BR-17033360 Bauru, SP, Brazil

[4] UFSCar Univ Fed Sao Carlos, Rodovia Washington Luis, Km 235, SP-310, BR-13565905 Sao Paulo, SP, Brazil

来源：

MATERIALS LETTERS | 2023年 / 351卷

基金：

巴西圣保罗研究基金会;

关键词：

Anelastic relaxation; Dynamic mechanical analysis; Oxygen Diffusion; Ti-20Zr-Mo alloys;

D O I：

10.1016/j.matlet.2023.135020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work investigated oxygen diffusion in Ti-20Zr-7.5Mo and Ti-20Zr-10Mo alloys by mechanical spectroscopy measurements. The relaxation parameters of the alloys with the body-centered cubic crystal structure were guided by Arrhenius law and mathematical analyses under the peak ratios. The results showed that the peaks are thermally activated, with the shift of Q(p)(-1) to higher temperatures in tests performed at high frequencies. The activation energy (E) and diffusivity (D) of oxygen in the alloys were obtained using a mathematical treatment of the structures derived from the relaxation time, where was obtained E = 1.06 +/- 0.01 eV and D = (5.75 +/- 0.63) x10(-10) m(2)/s for Ti-20Zr-7.5Mo alloy, and E = (0.77 +/- 0.04) eV and D = (2.64 +/- 0.45) x10(-13) m(2)/s for Ti-20Zr-10Mo alloy.

引用

页数：4

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