Journal
CORROSION SCIENCE
Volume 107, Issue -, Pages 49-59Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.02.019
Keywords
Stainless steel; Weight loss; SEM; Intergranular corrosion; Welding
Funding
- National Natural Science Foundation of China [51201027, 51271054, 51231002, 51571058]
- Fundamental Research Funds for the Central Universities [L1502039, N150504001]
- Program for New Century Excellent Talents in University [NCET-13-0104]
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Grain boundary character distribution (GBCD) and the effect of GBCD optimization on the intergranular corrosion (IGC) of a cold rolled and subsequently annealed nickel-free and manganese-bearing high-nitrogen austenitic stainless steel were investigated. The results show that the fraction of low Sigma coincidence site lattice boundaries increases from 47.3% for the solid solution treated specimen to 83.3% for the specimen cold-rolled by 7% and then annealed at 1423 K for 10 min. Sigma 3 boundaries of high fraction effectively interrupt the connectivity of non-corrosion-resisting boundaries (special boundaries like Sigma 9, Sigma 27, etc. and general high angle boundaries) network, thus improving the IGC resistance. (C) 2016 Elsevier Ltd. All rights reserved.
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