期刊
CORROSION SCIENCE
卷 164, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2019.108314
关键词
Stainless steel; Selective laser melting; Residual stress; Pitting corrosion; Donor density; Repassivation
资金
- US Office of Naval Research
- US Office of Naval Research Global [N62909-18-1-2077]
- Woodside Energy Ltd.
- Australian Research Council through the ARC Industry Transformation Research Hub for Transforming Australia's Manufacturing Industry through High Value Additive Manufacturing [IH130100008]
Selective Laser Melting (SLM) and various subsequent stress-relieving treatments were used to obtain 316 L specimens with compressive residual stresses, varying from 15 to 250 MPa. This enabled a study on the effect of residual stress on corrosion of 316 L using electrochemical methods, which is relevant for durability of additively manufactured materials. Overall, compressive stresses in SLM 316 L result in a measurable increase in the pitting potential, accompanied by a decrease in the passive film currents and donor densities. It is proposed that compressive stresses lower the film growth and repassivation kinetics but slightly enhances the pitting resistance of SLM 316 L.
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