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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

The role of twinning and nano-crystalline omega phase on the fatigue behavior of the metastable beta Ti-15Mo alloy

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Author(s):
Campanelli, Leonardo Contri [1] ; Coury, Francisco Gil [2] ; Guo, Yaofeng [2] ; Carvalho Pereira da Silva, Paulo Sergio [1] ; Kaufman, Michael Joseph [2] ; Bolfarini, Claudemiro [1]
Total Authors: 6
Affiliation:
[1] Univ Fed Sao Carlos, Dept Mat Engn, Rod Washington Luiz Km 235, BR-13565905 Sao Carlos, SP - Brazil
[2] Colorado Sch Mines, Dept Met & Mat Engn, 1500 Illinois St, Golden, CO 80401 - USA
Total Affiliations: 2
Document type: Journal article
Source: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING; v. 729, p. 323-330, JUN 27 2018.
Web of Science Citations: 5
Abstract

This work evaluated in depth the fatigue and fracture behavior of the metastable beta Ti-15Mo alloy considering the presence of deformation twins and athermal nano-crystalline omega phase in the microstructure. Regardless of the microstructural condition studied, the as-received and the solution treated and quenched materials, omega phase remained unchanged, guaranteeing the static mechanical properties at acceptable levels. The mechanism of fatigue fracture was related to the existence of twins and maximum shear stress planes near the direction of screw dislocation motion in the BCC structure. The significant amount of deformation twins in the initial microstructure did not alter the fatigue limit, because the solution treated and quenched material unexpectedly developed twins during the fatigue test. (AU)

FAPESP's process: 16/12995-5 - Fatigue of a metastable beta titanium alloy for application as biomaterial
Grantee:Leonardo Contri Campanelli
Support Opportunities: Scholarships in Brazil - Post-Doctoral