2A97 Al-Li合金薄板时效析出与电位及晶间腐蚀的相关性研究
蔡超,李煬,李劲风,张昭,张鉴清

Correlation Between Ageing Precipitation, Potential and Intergranular Corrosion of 2A97 Al-Li Alloy Sheet
Chao CAI,Yang LI,Jinfeng LI,Zhao ZHANG,Jianqing ZHANG
表1 2A97 Al-Li合金T6态时效不同时间并腐蚀后腐蚀类型和最大腐蚀深度
Table 1 Corrosion type and maximum corrosion depth of 2A97 Al-Li alloy with T6 ageing after corrosion test for different time
Time / hDominating corrosion modeMax. IGC depth / μmMax. pitting depth / μm
0Pitting-120
2Local IGC140-
4General IGC238-
6General IGC221-
11.5Local IGC with pitting179101
22Local IGC with pitting134135
36Pitting with local IGC101192
45Pitting with local IGC72163
58Pitting with local IGC82151
68Pitting with slight IGC-199
72Pitting with slight IGC-227
98Pitting with slight IGC-167
120Pitting with slight IGC-181