晶界工程对于改善304奥氏体不锈钢焊接热影响区耐晶间腐蚀性能的影响

杨辉, 夏爽, 张子龙, 赵清, 刘廷光, 周邦新, 白琴

IMPROVING THE INTERGRANULAR CORROSION RESISTANCE OF THE WELD HEAT-AFFECTED ZONE BY GRAIN BOUNDARY ENGINEERING IN 304 AUSTENITIC STAINLESS STEEL

YANG Hui, XIA Shuang, ZHANG Zilong, ZHAO Qing, LIU Tingguang, ZHOU Bangxin, BAI Qin

表2 样品A和B的晶界特征分布统计及晶粒尺寸

Table 2 Grain boundary character distribution and grain sizes of specimens A and B

Specimen Length fraction of grain boundary / % Average grain Average grain-cluster Σ3 Σ9+Σ27 Overall low Σ size / μm size / μm A 44.0 1.0 45.0 24.3 51.1 B 66.5 9.1 75.6 28.1 124.4