Study on the corrosion resistance of multiphase TRIP steels
Multiphase TRIP (Transformation Induced Plasticity) steels are known to combine higher strength with higher ductility. In this paper, the corrosion resistance of this steel has been has been investigated by accelerated corrosion tests,such as wet/dry cyclic corrosion and the weight loss in laboratory. The morphologies of their rust layers were observed by using scanning electron microscopy, and the corrosion performance of these steels was discussed by analyzing the protective mechanism. The results show that the corrosion rate of steel A is significantly greater than that of steels B and C in wet/dry cyclic corrosion and weight loss tests. The corrosion performance of conventional C-Mn-Si TRIP steel is deteriorated in both NaHSO3 and 3.5 wt.％ NaCl aqueous solutions. And superior corrosion performance is exhibited for TRIP steel with low alloying contents due to its high thermodynamic stability. The enhancement of corrosion performance of TRIP steel is attributed to the additions of alloying elements, such as Al, Cu, Cr, Mo, Ni, etc. The alloying elements increase the compactness of rust layers, so electrochemical characteristic of TRIP steel is improved.
TRIP steel alloying element rust layer corrosion performance
Wang Jijie Wu Di Li Zhuang Guo Xiang-min He Chunlin Cai Qingkui
School of Materials Science and Engineering, Shenyang University of Aeronautics and Astronautics, Sh State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, China; Liaoning Province Key Laboratory for Advanced Materials, Shenyang University, Shenyang 110044, Liaon
国际会议
The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)
北京
英文
499-502
2011-05-31（万方平台首次上网日期，不代表论文的发表时间）