TY - JOUR
T1 - Influence of retrogression and re-aging treatment on intergranular and exfoliation corrosion of 1973 aluminum alloy
AU - Gong, Jing
AU - Wang, Ming Pu
AU - Zhang, Qian
AU - Sheng, Xiao Fei
AU - Yang, Wen Chao
AU - Li, Zhou
PY - 2012/7
Y1 - 2012/7
N2 - The influence of retrogression and re-aging treatment (RRA) process on mechanical properties and the intergranular and exfoliation corrosion of 1973 aluminum alloy were investigated using hardness measurement, constant tensile properties test, polarization curve measurement, intergranular and exfoliation corrosion tests, optical microscopy (OM) and transmission electron microscopy observation (TEM). The results show that the intergranular corrosion trend is the same as that of exfoliation corrosion after different aging treatments, and the RRA process order of descending corrosion resistance is that: 200°C, 60 min; 180°C, 60 min; 180°C, 40 min; 180°C, 20 min; T6. The strength and the resistance of intergranular and exfoliation corrosion of 1973 aluminum alloy can be enhanced with the retrogression and re-aging treatment at 180°C. As the retrogression and re-aging treatment at 200°C for 1 h the corrosion resistant of 1973 aluminum alloy increases, however its strength decreases greatly. Retrogression and re-aging at 180°C for 1 h is a suitable processing for 1973 aluminum alloy to have good combination properties.
AB - The influence of retrogression and re-aging treatment (RRA) process on mechanical properties and the intergranular and exfoliation corrosion of 1973 aluminum alloy were investigated using hardness measurement, constant tensile properties test, polarization curve measurement, intergranular and exfoliation corrosion tests, optical microscopy (OM) and transmission electron microscopy observation (TEM). The results show that the intergranular corrosion trend is the same as that of exfoliation corrosion after different aging treatments, and the RRA process order of descending corrosion resistance is that: 200°C, 60 min; 180°C, 60 min; 180°C, 40 min; 180°C, 20 min; T6. The strength and the resistance of intergranular and exfoliation corrosion of 1973 aluminum alloy can be enhanced with the retrogression and re-aging treatment at 180°C. As the retrogression and re-aging treatment at 200°C for 1 h the corrosion resistant of 1973 aluminum alloy increases, however its strength decreases greatly. Retrogression and re-aging at 180°C for 1 h is a suitable processing for 1973 aluminum alloy to have good combination properties.
KW - Exfoliation corrosion
KW - Intergranular corrosion
KW - Retrogression and re-aging treatment
UR - http://www.scopus.com/inward/record.url?scp=84866539689&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:84866539689
SN - 1672-7207
VL - 43
SP - 2520
EP - 2527
JO - Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology)
JF - Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology)
IS - 7
ER -