• CN: 11-2187/TH
  • ISSN: 0577-6686

›› 1994, Vol. 30 ›› Issue (5): 50-54.

• Article • Previous Articles     Next Articles

IN-SITU TEM STUDY ON THE EFFECT OF HYDROGEN ON THE DEFORMATION CRACK TIP AND CRACK PROPAGATION

Liao Bo;Kang Datao;Lei Tingquan;Song Sangjun   

  1. Yanshan University Harbin Institute of Technology Dalian Heavy Machinery Works
  • Published:1994-09-01

Abstract: The influence of hydrogen on the deformation ahead of crack tip and crack propagation were in-situ observed and analyzed under TEM during dynamic tensile deformation of engineering structure steel. The results show that hydrogen can promote the local plastic deformation ahead crack tip, and change the mode of crack propagation and crack will propagate as zigzag path.

Key words: Crack propagation, Crack tip, Hydrogen, Plastic deformation