It holds that main causes promoting crack on martensite stainless steel are gross martensite and crystal boundary carburet and secondary phase distributed along crystal boundary.

• 文章认为，粗大的马氏体组织、晶界碳化物以及沿晶界分布的“第二相”组织是促使马氏体不锈钢产生裂纹的主要原因。