Investigation of graded strengthened hyper-deformed surfaces by impact treatment: micro-percussion testing

In the industry, mechanical surface treatments could improve the mechanical behaviour of materials by the means of local hyper-deformation and graded strengthening. Micro-percussion test represents an interesting case scenario to emulate these kinds of conventional treatments (shot-peening, SMAT, ro...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2017-05, Vol.194 (1), p.12024
Main Authors: Tumbajoy-Spinel, David, Descartes, Sylvie, Bergheau, Jean-Michel, Al-Baida, Halim, Langlade, Cécile, Kermouche, Guillaume
Format: Article
Language:English
Subjects:
Burnishing
Deformation
Impact analysis
Mechanical properties
Mechanics
Mechanics of materials
Microstructure
Parameter sensitivity
Percussion
Physics
Sensitivity analysis
Surface treatment
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Summary:In the industry, mechanical surface treatments could improve the mechanical behaviour of materials by the means of local hyper-deformation and graded strengthening. Micro-percussion test represents an interesting case scenario to emulate these kinds of conventional treatments (shot-peening, SMAT, roller-burnishing, etc) and go further on microstructural and mechanical characterization at local and global scales. For this technique, every impact is made at the same position by a rigid conical indenter, controlling the number, angle and velocity of impacts. The main issue of this work is to establish a complete description of the transformed microstructures; to understand the mechanisms involved on the formation and growth of refined structures; to make a parametric sensitivity analysis of different impact conditions.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/194/1/012024