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通过对 Ｔ９１ 钢与 Ｔ２２ 、 Ｇ１０２ 、 Ｔ Ｐ３４７ 的异种钢焊接接头的裂纹敏感性进行分析的结果认为， Ｔ９１ 钢及其异种钢焊接接头对热裂纹、 Ｔ９１ 钢对再热裂纹均不敏感， Ｔ９１ 与 Ｔ２２ 、 Ｔ９１ 和 Ｇ１０２ 异种钢焊接接头对再热裂纹敏感，与 Ｔ２２ 、 Ｇ１０２ 同质材料焊接的接头相当； Ｔ９１ 钢及其异种钢焊接接头对冷裂纹敏感，可通过一定的工艺措施避免冷裂的发生。
By analyzing the crack sensitivity of dissimilar steel welded joints of T91 steel with T22, G102 and T P347, the results show that the welded joints of T91 steel and its dissimilar steel are not sensitive to hot cracking and T91 steel to reheat cracking. T91 and T22, T91 and G102 dissimilar steel welded joints sensitive to reheat cracking, and T22, G102 welded joints homogeneous material is equivalent; T91 steel and its dissimilar steel welded joints sensitive to cold cracking, cold through certain measures to avoid cold cracking occur.