Tensile and fatigue behavior of electron beam welded TC17 titanium alloy joint

Hanqing Liu, Haomin Wang, Zhen Zhang, Yongjie Liu, Zhiyong Huang, Qingyuan Wang, Q. Chen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The tensile fracture was originated from the strain concentration in equiaxed grain region adjacent to the fusion center, where a lower micro-hardness occurred when compared to the columnar grain region in the fusion zone. A higher stress level was more potential to fabricate a fatal fatigue crack initiating from the intrinsic metallic deficiencies. At a lower stress of 180 MPa, fatigue crack appeared to initiate from the intergranular welding pores other than the intrinsic metallic deficiencies. Furthermore, intergranular welding pores induced fatal crack initiation became the major fatigue crack initiation mechanisms when the fatigue stress amplitude down to 140 MPa.

Original languageEnglish
Article number105210
JournalInternational Journal of Fatigue
Volume128
DOIs
Publication statusPublished - Nov 2019

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this