Microstructural analysis by scanning thermal microscopy of a nanocrystalline Fe surface induced by ultrasonic shot peening

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)445-453
Journal / PublicationSuperlattices and Microstructures
Issue number3-6
Publication statusPublished - Mar 2004
Externally publishedYes


TitleEurotherm 75: Microscale Heat Transfer 2
Period8 - 10 July 2003


Experiments were carried out using a scanning thermal microscope (SThM) to investigate the ultrafine-grained microstructures in the surface layer of a pure iron sample produced by ultrasonic shot peening. The analysis of thermal properties by SThM shows that the thermal conductivity strongly depends on the grain size of the microstructure. The different contrasts on the thermal conductivity images are used to estimate the thickness of the affected surface layer produced by ultrasonic shot peening. The results demonstrate that the SThM can be used as a powerful tool for the microstructural analysis of the ultrafine-grained surface layer. © 2004 Elsevier Ltd. All rights reserved.

Research Area(s)

  • Nanocrystalline material, Scanning thermal microscopy, Thermal conductivity, Ultrafine-grained layer