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Engineering Conferences International
Nanomechanical Testing in Materials Research and Development V
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Full-Text Articles in Engineering
Quantification Of Mechanical Properties Gradient By Nano-Indentation And Microcompression Testing On Mechanically-Induced Transformed Surfaces, David Tumbajoy, Guillaume Kermouche, Sylvie Descartes, Jean Michel Bergheau, Gaylord Guillonneau, Johann Michler
Quantification Of Mechanical Properties Gradient By Nano-Indentation And Microcompression Testing On Mechanically-Induced Transformed Surfaces, David Tumbajoy, Guillaume Kermouche, Sylvie Descartes, Jean Michel Bergheau, Gaylord Guillonneau, Johann Michler
Nanomechanical Testing in Materials Research and Development V
In the industry, there are several techniques which improve the service lifetime of materials by increasing the local mechanical properties in the near-surface. In the case of mechanical surface treatments (such as impact-based), the material is exposed to repeated mechanical loadings, producing a severe plastic deformation in the surface, and then leading to a local refinement of the microstructure into the affected zone (Tribologically Transformed Surfaces - TTS). The microstructure’s transformation is characterized by a progressive increment of the grain size from the surface until the bulk material. Consequently, very interesting physical properties such as high hardness and better tribological …
Ebsd Investigation Of Microstructure Refinement From Impact-Based Surface Treatments, Xavier Maeder, David Tumbajoy, Sylvie Descartes, Jean Bergheau, Cecile Langlade, Johann Michler, Guillaume Kermouche
Ebsd Investigation Of Microstructure Refinement From Impact-Based Surface Treatments, Xavier Maeder, David Tumbajoy, Sylvie Descartes, Jean Bergheau, Cecile Langlade, Johann Michler, Guillaume Kermouche
Nanomechanical Testing in Materials Research and Development V
The mechanical surface treatments confer better local mechanical properties against wear or fatigue service conditions. In the case of impact-based treatments, a local microstructure’s refinement in the near surface is produced by a severe plastic deformation of the material, leading to a progressive reduction of the grain size over a few tens of microns, and consequently an increase of the hardness and tribological properties. These zones are commonly known as Tribologically Transformed Surfaces (TTS). In this project two different procedures are implemented to obtain TTS surfaces on pure iron samples: Shot-peening treatment and Micro-percussion tests. For the first technique the …