Oxygen diffusion analysis in a new β Ti-25Ta-40Zr alloy using mechanical spectroscopy technique

被引：0
|
作者：
Kuroda, Pedro Akira Bazaglia [1 ,4 ]
da Silva, Marcos Ribeiro [2 ]
Afonso, Conrado Ramos Moreira [1 ]
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, BR-17033360 Bauru, SP, Brazil
[4] UFSCar Univ Fed Sao Carlos, Rodovia Washington Luis,km 235,SP 310, Sao Carlos, SP, Brazil
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2023年 / 27卷
基金：
巴西圣保罗研究基金会;
关键词：
Anelastic relaxation; Dynamic mechanical analysis; Oxygen diffusion; Ti-25Ta-40Zr alloy; CORROSION-RESISTANCE; TA;
D O I：
10.1016/j.jmrt.2023.11.184
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study primarily focuses on analyzing anelastic processes due to interstitial oxygen in the Ti-25Ta-40Zr alloy. From the structural and microstructural characterization (DRX and optical microscopy), it was detected that the Ti-25Ta-40Zr alloy is a alpha + beta type. Peaks of anelastic relaxation were visualized in the Ti-25Ta-40Zr alloy, where the peaks are thermally activated, with the shift of Qp- 1 to higher temperatures in tests performed at high frequencies. The activation energy (E), relaxation time (tau 0), and diffusivity (Do) of oxygen in the alloy were obtained E = (0.49 +/- 0.02) eV, tau 0 = (6.3 +/- 0.2) x10-19 s and D0 = (5.0 +/- 0.1) x10-3 m2/s.
引用
收藏
页码：7228 / 7232
页数：5
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