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

F. A. Guo; N. Trannoy; J. Lu

doi:10.1016/j.spmi.2003.12.004

Author(s)

F. A. Guo
N. Trannoy
J. Lu

Detail(s)

Original language	English
Pages (from-to)	445-453
Journal / Publication	Superlattices and Microstructures
Volume	35
Issue number	3-6
Publication status	Published - Mar 2004
Externally published	Yes

Conference

Title	Eurotherm 75: Microscale Heat Transfer 2
Place	France
City	Reims
Period	8 - 10 July 2003

Link(s)

DOI	DOI https://doi.org/10.1016/j.spmi.2003.12.004 Final Published version
	Check@CityULib
Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-4243179057&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(7e5cb2e9-6cd8-4fd3-9757-3dafbadeb4e6).html

Abstract

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.