Surface nanocrystallization by surface mechanical attrition treatment

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 12 - Chapter in an edited book (Author)peer-review

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Author(s)

Detail(s)

Original languageEnglish
Title of host publicationAdvances in Nanostructured Materials Processed by Severe Plastic Deformation
PublisherTrans Tech Publications Ltd
Pages91-108
Volume579
ISBN (print)9770255547605
Publication statusPublished - 2008
Externally publishedYes

Publication series

NameMaterials Science Forum
Volume579
ISSN (Print)0255-5476

Abstract

Based on strain-induced grain refinement, a novel surface mechanical attrition treatment (SMAT) technique has been developed to synthesize a nanostructured surface layer on metallic materials in order to upgrade their overall properties and performance without changing their chemical compositions. In recent several years, the microstructures and properties of surface layer were systematically investigated in various SMAT metals and alloys, including b.c.c., f.c.c. and h.c.p. crystal structures. Different grain refinement approaches and nanocrystalline formation mechanisms were identified in these deformed materials, involving dislocation activities, mechanical twinning and interaction of dislocations with mechanical twins. The properties of the surface layer were measured by means of hardness, tensile, fatigue and wear tests. The enhanced properties of the surface layer are mainly attributed to the strain-induced grain refinement. In this work, we reviewed the microstructures and properties of surface layer in the SMAT materials.

Research Area(s)

  • Grain refinement, Mechanical properties, Nanostructured materials, Surface mechanical attrition treatment (SMAT), Surface nanocrystallization

Citation Format(s)

Surface nanocrystallization by surface mechanical attrition treatment. / Tao, N. R.; Lu, J.; Lu, K.
Advances in Nanostructured Materials Processed by Severe Plastic Deformation. Vol. 579 Trans Tech Publications Ltd, 2008. p. 91-108 (Materials Science Forum; Vol. 579).

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 12 - Chapter in an edited book (Author)peer-review