@article{330ac94390a149968f0ad298a0a40886,
title = "Comparison of mechanisms of advanced mechanical surface treatments in nickel-based superalloy",
abstract = "Mechanical surface enhancement techniques are used to introduce compressive residual stresses to enhance the fatigue life and corrosion resistance of metallic components. In this study, we compare the effects of three advanced mechanical surface enhancements treatments: laser shock peening, cavitation shotless peening and ultrasonic nano structure modification on residual stress, hardness, plastic deformation and changes in near surface microstructure introduced in a Ni-Base superalloy, IN718 SPF(Super plastic forming). Coupons of the alloy were peened using two different conditions of each treatment and results compared to achieve a better understanding of underlying mechanisms of these techniques. Results indicate that there are significant differences in mechanisms of these surface treatments leading to differences in material response.",
keywords = "Cavitation, Laser shock peening, Ni-based superalloys, Residual stresses, X-ray diffraction",
author = "Amrinder Gill and Abhishek Telang and Mannava, {S. R.} and Dong Qian and Pyoun, {Young Shik} and Hitoshi Soyama and Vasudevan, {Vijay K.}",
note = "Funding Information: The authors (ASG, AT, SRM, DQ, YSP, HS and VKV) would like to thank the National Science Foundation (Grant no DMR-0706161 , Dr. Alan Ardell Program Monitor) and Battelle-DOE-NEUP (contract # 88635 , Dr.Sebastien Teysseyre, Program monitor, Idaho National Laboratory) for financial support of this research and Special Metals for supplying the IN718 SPF alloy sheet for this study. We also acknowledge Dr. Young-Sik Pyun and his group at Sun Moon University, Department of Mechanical Engineering, Cheonan, S. Korea for performing UNSM treatments. We would also like to acknowledge Dr. Hitoshi Soyama and his group at Tohoku University Department of Nanomechanics, Sendai, Japan for performing CSP treatments for this study. We also gratefully acknowledge the contribution of the State of Ohio, Department of Development and Third Frontier Commission, which provided funding in support of “Ohio Center for Laser Shock Processing for Advanced Material and Devices” and the experimental and computational equipment in the Center that was used in this work. Any opinions, findings, conclusions, or recommendations expressed in these documents are those of the author(s) and do not necessarily reflect the views of the NSF or the State of Ohio, department of Development. Publisher Copyright: {\textcopyright} 2013 Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",
year = "2013",
month = aug,
day = "1",
doi = "10.1016/j.msea.2013.04.021",
language = "English",
volume = "576",
pages = "346--355",
journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",
issn = "0921-5093",
publisher = "Elsevier BV",
}