将氢致局部塑性变形理论、弱键理论及氢压理论相结合,提出了氢促进空洞形核的新理论,氢通过促进局部塑性变形和降低键合力,一方面促进了纳米级微裂纹的形核,另一方面促进了微裂纹纯化成空洞。总之,氢促进了空洞的形核,另外,氢通过在空洞中形成氢压和降低键合力,升高了空洞的稳定性。 Hydrogen-induced local plastic deformation theory, weak bond theory and hydrogen pressure theory are combined to propose a new hydrogen promoting hollow nucleation theory. Hydrogen promotes local plastic deformation and reduces bonding force. On the one hand, it promotes the formation of nano- The nucleus, on the other hand, promotes the purification of microcracks into voids. In summary, hydrogen promotes hollow nucleation and, in addition, hydrogen increases void stability by forming hydrogen pressure in the void and reducing bond strength.