保护气成分对
1000 MPa
级高强熔敷金属组织特征的影响
安同邦,魏金山,单际国,田志凌
Influence of Shielding Gas Composition on Microstructure Characteristics of 1000 MPa Grade Deposited Metals
Tongbang AN,Jinshan WEI,Jiguo SHAN,Zhiling TIAN
表2
不同保护气熔敷金属的力学性能
Shielding gas
R
m
MPa
R
p0.2
MPa
Charpy absorbed energy / J
Vickers hardness
kg·mm
-2
γ
RT
-40 ℃
95%Ar+5%CO
2
1173
1038
49.3
17.3
404.25
0.88
90%Ar+10%CO
2
1101
942
55.0
33.0
381.47
0.86
80%Ar+20%CO
2
1160
980
72.6
52.0
366.71
0.84
70%Ar+30%CO
2
1044
921
57.6
47.6
358.39
0.88