Journal
CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
Volume 40, Issue 3, Pages 164-181Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10408436.2014.978446
Keywords
titanium alloys; biocompatible alloys; nanocrystallization; surface mechanical attrition treatment (SMAT); mechanical properties
Funding
- Australia-India Strategic Research Fund (AISRF) [ST060048]
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Nanometer-sized grain structures that exhibit a large number of grain boundaries on the surface of a bulk material demonstrate excellent properties relative to their coarse-grained (CG) equivalents. Surface modification using surface mechanical attrition treatment (SMAT) is an option that cab be used to tailor the corrosion, tribological, mechanical, and chemical reaction properties of a surface. SMAT is an effective route to create the nanostructured surface layer. The SMAT process has unique advantages compared with the other coating and deposition techniques for surface nanocrystallization. For example, SMAT does not alter the chemical composition of the nanocrystalline surface layer in the matrix. In addition, SMAT has been demonstrated to activate the material surface layer by surface modification and enhance the atomic diffusivity. This article presents a review of the advantages offered by the SMAT technique for the creation of high performance surface layers. The influence of the created nanocrystalline layer on mechanical, physical, and chemical properties is assessed. Developments and the current status of the surface nanolayer that are formed are evaluated from a physical approach. Finally, prospects for the future development of grain refinement on the surface of a material matrix and potential applications are presented.
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