Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6919
Title: Revelation of a functional dependence of the sum of two uniaxial strengths/hardness on elastic work/total work of indentation
Authors: Ma, D
Zhang, T
Ong, CW 
Keywords: Hardness
Simulation
Strength
Issue Date: Apr-2006
Publisher: Cambridge University Press
Source: Journal of materials research, Apr. 2006, v. 21, no. 4, p. 895-903 How to cite?
Journal: Journal of materials research 
Abstract: Dimensional and finite element analyses were used to analyze the relationship between the mechanical properties and instrumented indentation response of materials. Results revealed the existence of a functional dependence of (engineering yield strength σ [sub E,y] + engineering tensile strength σE[sub E,b])/Oliver & Pharr hardness on the ratio of reversible elastic work to total work obtained from an indentation test. The relationship links up the Oliver & Pharr hardness with the material strengths, although the Oliver & Pharr hardness may deviate from the true hardness when sinking in or piling up occurs. The functional relationship can further be used to estimate the sum σ[subE,y] + σ[sub E,b] according to the data of an instrumented indentation test. The σ [sub E,y] + σ[sub E,b] value better reflects the strength of a material compared to the hardness value alone. The method was shown to be effective when applied to aluminum alloys. The relationship can further be used to estimate the fatigue limits, which are usually obtained from macroscopic fatigue tests in different modes.
URI: http://hdl.handle.net/10397/6919
ISSN: 0884-2914
EISSN: 2044-5326
DOI: 10.1557/JMR.2006.0111
Rights: © 2006 Materials Research Society The following article "Dejun Ma, Taihua Zhang and Chung Wo Ong (2006). Revelation of a functional dependence of the sum of two uniaxial strengths/hardness on elastic work/total work of indentation. Journal of Materials Research, 21, pp 895-903. doi:10.1557/jmr.2006.0111." is available at http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=8026970
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