The mechanism of hydrogen induced delayed crack in EBW of Ti55 alloy is the diffusion of hydrogen up a stress gradinent to form hydride TiH 2 which precipitates at the crack tip.
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- 裂纹尖端应力场诱导氢原子扩散导致氢化物TiH2 析出是Ti5 5合金电子束焊缝氢致延迟裂纹扩展的主要机制