Nb含量对NiCrFe-7焊缝金属组织、缺陷和力学性能的影响*

莫文林, 张旭, 陆善平, 李殿中, 李依依

EFFECT OF Nb CONTENT ON MICROSTRUCTURE, WELDING DEFECTS AND MECHANICAL PROPERTIES OF NiCrFe-7 WELD METAL

MO Wenlin, ZHANG Xu, LU Shanping, LI Dianzhong, LI Yiyi

表1 焊丝合金成分的设计

Table 1 Composition design of filler wires

Sample Nb Al Ti C Si Fe Cr Ni 0Nb <0.02 0.1~0.2 0.2~0.4 0.02~0.04 0.1~0.3 9~11.5 29.5~30.5 Bal. 0.4Nb 0.30~0.50 0.1~0.2 0.2~0.4 0.02~0.04 0.1~0.3 9~11.5 29.5~30.5 Bal. 0.7Nb 0.60~0.80 0.1~0.2 0.2~0.4 0.02~0.04 0.1~0.3 9~11.5 29.5~30.5 Bal. 0.85Nb 0.80~0.95 0.1~0.2 0.2~0.4 0.02~0.04 0.1~0.3 9~11.5 29.5~30.5 Bal. 1.1Nb 1.00~1.20 0.1~0.2 0.2~0.4 0.02~0.04 0.1~0.3 9~11.5 29.5~30.5 Bal.