Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7971938 | Materials Science and Engineering: A | 2018 | 22 Pages |
Abstract
This work evaluated in depth the fatigue and fracture behavior of the metastable β Ti-15Mo alloy considering the presence of deformation twins and athermal nano-crystalline Ï phase in the microstructure. Regardless of the microstructural condition studied, the as-received and the solution treated and quenched materials, Ï 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.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Leonardo Contri Campanelli, Francisco Gil Coury, Yaofeng Guo, Paulo Sergio Carvalho Pereira da Silva, Michael Joseph Kaufman, Claudemiro Bolfarini,