3510 水素ガス雰囲気における炭素鋼の疲労き裂伝ぱ特性(S20-3 水素ガス雰囲気での疲労特性,S20 材料強度特性に及ぼす水素の影響)
詳細
In order to investigate the effect of hydrogen environment on fatigue crack growth characteristics of a low carbon steel JIS S1OC, fatigue crack growth tests were conducted in a low pressure hydrogen gas environment Fatigue crack growth rate in hydrogen gas is higher than that in nitrogen gas. It seems that a crack in the range of low growth rate prefers to propagate along the grain boundaries under hydrogen environment, while in the range of high growth rate across the grains accompanied by brittle striation patterns or river patterns. It seems important to clarify how hydrogen affects the crack growth behavior of different stages of crack growth.
