Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7210296 | Rare Metal Materials and Engineering | 2017 | 4 Pages |
Abstract
A new high strength titanium alloy containing elements Cr, Fe, Mo, W and Al was designed in order to achieve an excellent combination of ultra-high strength and good fracture toughness. Both the α/β and β heat treatment were introduced to study the effect of microstructure on mechanical properties of the alloy. The result shows that the alloy with α/β solution plus aging treatment is composed of mixture microstructures including a few equiaxed or short billet-like primary α phase and fine lamellar secondary α phase. The alloy has an excellent combination of ultra-high strength and good fracture toughness. The corresponding tensile strength exceeds 1400 MPa and fracture toughnesses KIC is up to 50.7 MPa-m1/2. Compared with the alloy after α/β heat treatment, the alloy with β region heat treatment presents representative Widmanstatten structure which has higher fracture toughnesses and lower strengths than the bimodal microstructure.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanics of Materials
Authors
Zhou Wei, Ge Peng, Zhao Yongqing, Xin Shewei, Li Qian, Wang Jing, Huang Chaowen, Chen Jun,