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ZHANG Xian-hui, CHEN Pei-yin, TAN Chang-ying. Effect of Stress and Plastic Strain on Hydrogen Diffusion In Welded Joint of Implant Test[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2002, (2): 9-12.
Citation: ZHANG Xian-hui, CHEN Pei-yin, TAN Chang-ying. Effect of Stress and Plastic Strain on Hydrogen Diffusion In Welded Joint of Implant Test[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2002, (2): 9-12.
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Effect of Stress and Plastic Strain on Hydrogen Diffusion In Welded Joint of Implant Test

  • Harbin Research Institute of Welding, Harbin 150080, China

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  • Received Date: November 08, 2001
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  • In this paper, the stress/strain field and hydrogen diffusion in implant specimen under different external loads are calculated by ABAQUS finite element software and the simulation technology for hydrogen diffusion in weldment.The results show that there exists an evident stress/strain concentration area in the vicinity of implant notch, and the stress near the tip of implant notch increases with the external load, but the stress concentration factor decreases gradually.With the same initial hydrogen content, the diffusible hydrogen peak value appearing in the stress/strain concentration area near thc tip of implant notch increases gradually with the external load, and the time at which the peak value appears is delayed correspondingly.It is concluded that the stress and strain concentration near the tip of the implant notch is the important reason for hydrogen accumulation in this area.
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