(3) The austenite in both the BM and WM enriched in Ni andnitrogen, while Cr and Mo were concentrated in the ferrite,and thus no element showed clear dendritic distribution inthe WM. The 2had higher Ni content but significantly lowerCr and Mo content than the primary austenite. However, thesame as the primary austenite, the nitrogen was enriched inthe 2compared to the ferrite. Furthermore, the adding 2% N2in shielding gas significantly promoted nitrogen solid-solutionin the primary austenite and 2, while there was little influenceon nitrogen solid-solution in the ferrite.