The effects of α/β phase interfaces on fatigue crack deflections in additively manufactured titanium alloy: A peridynamic study

被引:23
|
作者
Liu, Binchao [1 ]
Wang, Kai [1 ]
Bao, Rui [1 ]
Sui, Fucheng [2 ]
机构
[1] Beihang Univ, Sch Aeronaut Sci & Engn, Inst Solid Mech, Beijing, Peoples R China
[2] Shenyang Aircraft Design & Res Inst, Shenyang, Liaoning, Peoples R China
关键词
Fatigue crack path; Fatigue crack growth rate; Additive manufacturing; Phase interface; Peridynamics; MELTING DEPOSITED TI-5AL-5MO-5V-1CR-1FE; GROWTH-BEHAVIOR; MICROSTRUCTURE; MODEL; DEFORMATION; FRACTURE; PROPAGATION; LIFE;
D O I
10.1016/j.ijfatigue.2020.105622
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
A method to characterize alpha/beta interface effects on fatigue crack growth (FCG) in additively manufactured (AM) Ti-5Al-5Mo-5V-1Cr-1Fe is proposed with a fatigue model in peridynamic framework. The proposed method is verified by simulating FCG behaviors, and the simulation results accord well with our previous experiment observations. Then, some in-depth discussions as well as possible improvements towards the proposed method are presented. It is demonstrated that as compared with the present fatigue and damage tolerance (F&DT) evaluations for traditionally manufactured materials, anisotropy of material resistance to fatigue is of great significance for AM materials.
引用
收藏
页数:13
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