Relationship between Mechanical Properties and Microstructure in a New High Strength β Titanium Alloy

Wei Zhou, Peng Ge, Yongqing Zhao, Shewei Xin, Qian Li, Jing Wang, Chaowen Huang, Jun Chen

科研成果: 期刊稿件文章同行评审

9 引用 (Scopus)

摘要

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·m½. 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.

源语言英语
页(从-至)2076-2079
页数4
期刊Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
46
8
出版状态已出版 - 1 8月 2017

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