Mechanical Spectroscopy of Ti-15Zr-based Alloys with Mo Addition

Author(s)

Nespeque Correa, Diego Rafael ^{[1, 2]} ; Rocha, Luis Augusto ^{[3, 1]} ; Grandini, Carlos Roberto ^{[3, 1]}

Affiliation

^[1] Inst Biomat Tribocorrosao & Nanomed, Brazilian Branch IBTN BR, BR-17033360 Bauru, SP - Brazil

^[2] Inst Fed Educ Ciencia & Tecnol Sao Paulo IFSP, BR-18095410 Sorocaba, SP - Brazil

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

• Document type: Journal article
• Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 20, n. 2, p. 688-693, 2017.
• Web of Science Citations: 0

Abstract

In this paper, the effect of substitutional Mo amounts in internal friction and interstitial diffusion mechanisms was analyzed in Ti-15Zr-based alloys. Mechanical spectroscopy was obtained from room temperature up to 730 K with frequencies between 1 Hz and 40 Hz. Internal friction spectra were composed by anelastic relaxation peaks in beta-type alloys (metastable and stable), due to stress-induced ordering of oxygen and nitrogen interstitially in octahedral sites of the bcc crystalline structure. Peak decomposition analysis exhibited interactions between matrix-interstitial (Ti-O and Ti-N), substitutional-interstitial (Zr-O, Mo-O and Mo-N), and clusters (Ti-O-O and Zr-O-O). The diffusion results showed that the introduction of Mo facilitates the diffusion of interstitial elements in the metallic matrix. (AU)

• FAPESP's process: 10/20440-7 - Effect of substitutional and interstitial elements in the mechanical properties and biocompatibility of Ti-15Zr-xMo alloys
• Grantee: Diego Rafael Nespeque Correa
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 15/00851-6 - Biofunctionalization of Ti-15Zr-BASED alloys with molybdenum addition and some surface modifications
• Grantee: Diego Rafael Nespeque Correa
• Support Opportunities: Scholarships in Brazil - Post-Doctoral