经等温淬火(ADI)处理的球铁虽然具有众多优异机械特性,但在湿润环境下,存在韧性显著降低的现象。这与湿润环境下引起的氢脆有关。文章介绍了采用各种材料组织的球铁试样在湿润环境下材料韧性、强度降低的现象、机理,并对其成因进行了考察。 Ductile iron treated with austempering (ADI) has many excellent mechanical properties, but its toughness is significantly reduced in wet environments. This is related to the hydrogen embrittlement caused by wet conditions. In this paper, the phenomena and mechanism of ductility and strength reduction of ductile iron samples with various materials and structures in wet environment are introduced, and their causes are also investigated.