Effect of hydrogen gas environment On fatigue crack growth of FSW joints of A6061-T6 aluminum alloy

Akiyoshi Hagihara, Yasuji Oda, Hiroshi Noguchi

Research output: Contribution to journalArticlepeer-review

Abstract

In order to investigate the effects of hydrogen on the fatigue crack growth characteristics of Friction Stir Welded (FSW) joints of A6061-T6 aluminum alloy, bending fatigue tests were carried out on the specimen with small blind holes in a low pressure hydrogen gas environment. The fatigue crack growth life of an FSW joint in hydrogen gas is shorter than that in nitrogen gas and is roughly as long as that of the base material in hydrogen gas. However, the fatigue crack growth rate of the FSW joint specimen in earlier stage of crack growth is more enhanced by hydrogen than that of the base material.

Original languageEnglish
Pages (from-to)378-385
Number of pages8
JournalKeikinzoku Yosetsu/Journal of Light Metal Welding and Construction
Volume45
Issue number8
Publication statusPublished - Aug 1 2007

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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