Paper Title:
Multiscale Mapping of Mechanical Properties by Instrumented Indentation Test
  Abstract

The instrumented indentation test (IIT) is a mechanical testing method to determine the hardness and elastic modulus of materials by putting an indenter into a material surface. This technique has now gone beyond normal hardness tests by evaluating additional properties of materials and by allowing testing at much lower forces and indentation depths (micro/nano ranges). This study presents analytic models and procedures for evaluating tensile flow properties and residual stress state using IIT; the tensile flow properties are treated by defining a representative stress/strain beneath a spherical indenter and the residual stress by using a stress-insensitive contact hardness model. The IIT results are compared with those from conventional methods such as uniaxial tensile test and X-ray diffraction. In addition, IIT can be used as a multiscale mapping tool for the mechanical properties of composite materials and constituent phases by using macro/micro/nano indentation system: we made a hardness map of multiphase steel and measured the strength/residual stress distributions of welded pipeline.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
2316-2321
DOI
10.4028/www.scientific.net/MSF.654-656.2316
Citation
K. H. Kim, Y. C. Kim, S. K. Kang, K. H. Kim, D. I. Kwon, "Multiscale Mapping of Mechanical Properties by Instrumented Indentation Test", Materials Science Forum, Vols. 654-656, pp. 2316-2321, 2010
Online since
June 2010
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Price
$32.00
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