Journal
SURFACE & COATINGS TECHNOLOGY
Volume 282, Issue -, Pages 149-154Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2015.10.026
Keywords
Austenitic stainless steel; Electropulsing-assisted ultrasonic surface rolling process; Surface property; Grain refinement; Plastic deformation
Funding
- Research & Development Funding Project of Shenzhen [JCYJ20120619152539900]
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The present work reports the experimental observations of surface property enhancement for austenitic stainless steel treated by electropulsing-assisted ultrasonic surface rolling process (EP-USRP). Compared with the original ultrasonic surface rolling process (USRP), the introduction of electropulsing can facilitate the surface cracks healing, and alter the cross-sectional micro-hardness gradient distribution within the surface strengthened layer, i.e. significantly gaining higher surface hardness or greater impact depth under the different experimental parameters. Refined grain and enhanced plastic deformation caused by electropulsing are likely the primary reason for the observed phenomena. (C) 2015 Elsevier B.V. All rights reserved.
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