Correlation between the flow stress and the nominal indentation hardness of soft metals

Yanping CAO; Zhenyu XUE; Xi CHEN; Dierk RAABE

doi:10.1016/j.scriptamat.2008.04.039

Correlation between the flow stress and the nominal indentation hardness of soft metals

Yanping CAO^*, Zhenyu XUE, Xi CHEN^*, Dierk RAABE

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

27 Citations (Scopus)

Abstract

For the sharp indentation of soft metals, we first reveal a simple relation between the nominal hardness, H_n, and the flow stress, σ_r, i.e. H_n = 4.4σ_r. Further, using the relation proposed herein instead of the well-known Tabor's relation and the analysis performed by Nix/Gao on the geometrically necessary dislocations, a simple indentation nominal hardness-depth relation at the microscale is obtained. The model agrees well with the experiment data in the literature and the simulation based on a strain gradient theory.

Original language	English
Pages (from-to)	518-521
Number of pages	4
Journal	Scripta Materialia
Volume	59
Issue number	5
DOIs	https://doi.org/10.1016/j.scriptamat.2008.04.039
Publication status	Published - Sept 2008
Externally published	Yes

Keywords

Microindentation
Nominal hardness
Size effects

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10.1016/j.scriptamat.2008.04.039

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title = "Correlation between the flow stress and the nominal indentation hardness of soft metals",

abstract = "For the sharp indentation of soft metals, we first reveal a simple relation between the nominal hardness, Hn, and the flow stress, σr, i.e. Hn = 4.4σr. Further, using the relation proposed herein instead of the well-known Tabor's relation and the analysis performed by Nix/Gao on the geometrically necessary dislocations, a simple indentation nominal hardness-depth relation at the microscale is obtained. The model agrees well with the experiment data in the literature and the simulation based on a strain gradient theory.",

keywords = "Microindentation, Nominal hardness, Size effects",

author = "Yanping CAO and Zhenyu XUE and Xi CHEN and Dierk RAABE",

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language = "English",

volume = "59",

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T1 - Correlation between the flow stress and the nominal indentation hardness of soft metals

AU - CAO, Yanping

AU - XUE, Zhenyu

AU - CHEN, Xi

AU - RAABE, Dierk

PY - 2008/9

Y1 - 2008/9

N2 - For the sharp indentation of soft metals, we first reveal a simple relation between the nominal hardness, Hn, and the flow stress, σr, i.e. Hn = 4.4σr. Further, using the relation proposed herein instead of the well-known Tabor's relation and the analysis performed by Nix/Gao on the geometrically necessary dislocations, a simple indentation nominal hardness-depth relation at the microscale is obtained. The model agrees well with the experiment data in the literature and the simulation based on a strain gradient theory.

AB - For the sharp indentation of soft metals, we first reveal a simple relation between the nominal hardness, Hn, and the flow stress, σr, i.e. Hn = 4.4σr. Further, using the relation proposed herein instead of the well-known Tabor's relation and the analysis performed by Nix/Gao on the geometrically necessary dislocations, a simple indentation nominal hardness-depth relation at the microscale is obtained. The model agrees well with the experiment data in the literature and the simulation based on a strain gradient theory.

KW - Microindentation

KW - Nominal hardness

KW - Size effects

UR - http://www.scopus.com/inward/record.url?scp=46049112668&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2008.04.039

DO - 10.1016/j.scriptamat.2008.04.039

M3 - Journal Article (refereed)

AN - SCOPUS:46049112668

SN - 1359-6462

VL - 59

SP - 518

EP - 521

JO - Scripta Materialia

JF - Scripta Materialia

IS - 5

ER -

Correlation between the flow stress and the nominal indentation hardness of soft metals

Abstract

Keywords

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