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.
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页数：4
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