“氢脆”就是氢扩散到金属内部使金属原子结合力下降,基体脆化,或形成很脆的氢化物导致金属的脆断。氢几乎对所有金属都存在不同程度氢脆倾向,使金属部件产生突然的脆性断裂,如航空及宇航工业上使用的高强度结构钢在低应力静负荷下产生的破坏就是由于含有微量氢所引起。对Fe基合金,一般公认氢在合金中的传送是氢脆控制因素。金属中缺陷、溶质原子和沉淀对氢的捕获可以改变氢的传送率,因此这是抑制氢脆一种有希望的手段。例如人 Hydrogen embrittlement is the diffusion of hydrogen into the interior of a metal to reduce the bond strength of the metal, the embrittlement of the substrate, or the formation of a very brittle hydride that causes the brittleness of the metal. Hydrogen has a tendency of hydrogen embrittlement to almost all metals to some extent, causing sudden brittle fracture of metal parts. For example, high-strength structural steels used in the aviation and aerospace industries under low stress and static load are caused by containing trace amounts of hydrogen . For Fe-based alloys, it is generally accepted that the transfer of hydrogen in the alloy is a hydrogen embrittlement control factor. Metal defects, solute atoms and precipitation of hydrogen capture can change the hydrogen transfer rate, so this is a promising means of inhibiting hydrogen embrittlement. For example, people