Optimization of grain boundary character distribution for intergranular corrosion resistant 304 stainless steel by twin-induced grain boundary engineering |
| |
| Affiliation: | 1. School of Material Science & Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China;2. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China;3. Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Hong Kong, China;1. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India;2. Department of Engineering Design, Indian Institute of Technology Madras, Chennai 600036, India |
| |
| Abstract: | The effects of process parameters, pre-strain, annealing temperature, time, etc. on grain boundary character distribution (GBCD) and intergranular corrosion in thermomechanical treatment were examined during grain boundary engineering of type 304 austenitic stainless steel. Slight pre-strain annealing at a relatively low temperature resulted in excellent intergranular corrosion resistance due to optimized GBCD, i.e. the uniform distribution of a high frequency of coincidence site lattice boundaries and consequent discontinuity of random boundary network in the material. The optimum distribution can be formed by introduction of low energy segments on migrating random boundaries during twin emission and boundary–boundary reactions in the grain growth without generation of new random boundaries. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
