通过调整ＦｅＣｒＮｉ激光熔覆合金中Ｃｒｅｑ／Ｎｉｅｑ，研究了Ｃｒｅｑ／Ｎｉｅｑ对熔覆层组织和开裂敏感性的影响。研究表明，随合金中Ｃｒｅｑ／Ｎｉｅｑ的增加，熔覆层组织将出现δＦｅ，并逐渐增加；而δＦｅ含量与熔覆层的开裂敏感性有关。 The effect of Creq / Nieq on the microstructure and cracking susceptibility of the cladding layer was investigated by adjusting the Creq / Nieq in the cladded FeCrNi alloy. The results show that with the increase of the content of Creq / Nieq in the alloy, the microstructure of the cladding layer will appear δFe and gradually increase, while δFe content is related to the cracking susceptibility of the cladding layer.