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1 不同保护气熔敷金属的化学成分

Table 1 Chemical compositions of deposited metals with different shielding gases(mass fraction / %)

Shielding gas C Si Mn Ni+Cr+Mo Ti O N Fe 95%Ar+5%CO2 0.097 0.52 1.67 3.88 0.070 0.021 0.0034 Bal. 90%Ar+10%CO2 0.089 0.48 1.54 3.83 0.065 0.027 0.0032 Bal. 80%Ar+20%CO2 0.089 0.47 1.46 3.80 0.045 0.032 0.0036 Bal. 70%Ar+30%CO2 0.087 0.43 1.38 3.69 0.043 0.040 0.0034 Bal.