δ-铁素体含量对高SiN奥氏体不锈钢焊缝性能的影响

杨景清, 董文超, 陆善平

Effect of δ-ferrite Content on Resistance to Cracking and Nitric Acid Corrosion of Weld Joints for High SiN Austenitic Stainless Steel

YANG Jingqing, DONG Wenchao, LU Shanping

表2 δ-铁素体含量不同的焊缝熔敷金属的化学成分

Table 2 Chemical composition of deposited metal with different δ-ferrite contents (mass fraction, %)

No. C Cr Ni Mo Mn Si N Nb Fe δ content 1δ 0.0033 19.34 15.6 0.031 1.01 4.12 0.100 0.007 Bal. 1.3 2δ 0.0023 19.33 15.6 0.026 0.56 4.12 0.100 0.007 1.7 7δ 0.0082 19.95 16.0 0.67 1.41 4.02 0.074 0.10 7.1 8δ 0.0044 19.80 16.1 0.30 1.50 3.95 0.036 0.084 8.2 10δ 0.0078 19.68 15.5 0.31 1.46 4.27 0.051 0.005 9.7