Effect of Surface Mechanical Treatments on the Microstructure-Property-Performance of Engineering Alloys
1
School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
2
Advanced Remanufacturing and Technology Centre, Agency for Science, Technology and Research (A*STAR), 3 CleanTech Loop, Singapore 637143, Singapore
3
Energy Research Institute, Nanyang Technological University, Singapore 639798, Singapore
*
Author to whom correspondence should be addressed.
Materials 2019, 12(16), 2503; https://doi.org/10.3390/ma12162503
Received: 13 June 2019
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Revised: 29 July 2019
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Accepted: 30 July 2019
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Published: 7 August 2019
(This article belongs to the Special Issue Deformation, Fatigue and Fracture of Materials)
Fatigue is a dominant failure mechanism of several engineering components. One technique for increasing the fatigue life is by inducing surface residual stress to inhibit crack initiation. In this review, a microstructural study under various bulk (such as severe plastic deformation) and surface mechanical treatments is detailed. The effect of individual microstructural feature, residual stress, and strain hardening on mechanical properties and fatigue crack mechanisms are discussed in detail with a focus on nickel-based superalloys. Attention is given to the gradient microstructure and interface boundary behavior for the mechanical performance. It is recommended that hybrid processes, such as shot peening (SP) followed by deep cold rolling (DCR), could enhance fatigue life. The technical and scientific understanding of microstructural features delineated here could be useful for developing materials for fatigue performance.
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Keywords:
nickel-based superalloys; surface mechanical treatments; severe plastic deformation; microstructure; fatigue performance
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MDPI and ACS Style
Kumar, D.; Idapalapati, S.; Wang, W.; Narasimalu, S. Effect of Surface Mechanical Treatments on the Microstructure-Property-Performance of Engineering Alloys. Materials 2019, 12, 2503. https://doi.org/10.3390/ma12162503
AMA Style
Kumar D, Idapalapati S, Wang W, Narasimalu S. Effect of Surface Mechanical Treatments on the Microstructure-Property-Performance of Engineering Alloys. Materials. 2019; 12(16):2503. https://doi.org/10.3390/ma12162503
Chicago/Turabian StyleKumar, Dharmesh, Sridhar Idapalapati, Wei Wang, and Srikanth Narasimalu. 2019. "Effect of Surface Mechanical Treatments on the Microstructure-Property-Performance of Engineering Alloys" Materials 12, no. 16: 2503. https://doi.org/10.3390/ma12162503
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