Contribution to size effect of yield strength from the stochastics of dislocation source lengths in finite samples

Triplicane A. Parthasarathy; Satish I. Rao; Dennis M. Dimiduk; Michael D. Uchic; Dallas R. Trinkle

doi:10.1016/j.scriptamat.2006.09.016

Contribution to size effect of yield strength from the stochastics of dislocation source lengths in finite samples

Triplicane A. Parthasarathy, Satish I. Rao, Dennis M. Dimiduk, Michael D. Uchic, Dallas R. Trinkle

Research output: Contribution to journal › Article › peer-review

Abstract

Recent works show that the yield strength of metals increases steeply with decreasing sample size. In this work, it is shown that this sample size effect can be rationalized almost completely by considering the stochastics of dislocation source lengths in samples of finite size. The statistical first and second moments of the effective source length are derived as a function of sample size. The sample strength predicted from this effective length compares well with data.

Original language	English (US)
Pages (from-to)	313-316
Number of pages	4
Journal	Scripta Materialia
Volume	56
Issue number	4
DOIs	https://doi.org/10.1016/j.scriptamat.2006.09.016
State	Published - Feb 2007
Externally published	Yes

Keywords

Dislocation
Size
Source
Stochastics
Yield

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Materials Science
Metals and Alloys

Online availability

10.1016/j.scriptamat.2006.09.016

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title = "Contribution to size effect of yield strength from the stochastics of dislocation source lengths in finite samples",

abstract = "Recent works show that the yield strength of metals increases steeply with decreasing sample size. In this work, it is shown that this sample size effect can be rationalized almost completely by considering the stochastics of dislocation source lengths in samples of finite size. The statistical first and second moments of the effective source length are derived as a function of sample size. The sample strength predicted from this effective length compares well with data.",

keywords = "Dislocation, Size, Source, Stochastics, Yield",

author = "Parthasarathy, {Triplicane A.} and Rao, {Satish I.} and Dimiduk, {Dennis M.} and Uchic, {Michael D.} and Trinkle, {Dallas R.}",

note = "Funding Information: This work was funded in part by US Air Force Contract No. FA8650-04-D-5233. ",

year = "2007",

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AU - Parthasarathy, Triplicane A.

AU - Rao, Satish I.

AU - Dimiduk, Dennis M.

AU - Uchic, Michael D.

AU - Trinkle, Dallas R.

N1 - Funding Information: This work was funded in part by US Air Force Contract No. FA8650-04-D-5233.

PY - 2007/2

Y1 - 2007/2

N2 - Recent works show that the yield strength of metals increases steeply with decreasing sample size. In this work, it is shown that this sample size effect can be rationalized almost completely by considering the stochastics of dislocation source lengths in samples of finite size. The statistical first and second moments of the effective source length are derived as a function of sample size. The sample strength predicted from this effective length compares well with data.

AB - Recent works show that the yield strength of metals increases steeply with decreasing sample size. In this work, it is shown that this sample size effect can be rationalized almost completely by considering the stochastics of dislocation source lengths in samples of finite size. The statistical first and second moments of the effective source length are derived as a function of sample size. The sample strength predicted from this effective length compares well with data.

KW - Dislocation

KW - Size

KW - Source

KW - Stochastics

KW - Yield

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JF - Scripta Materialia

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ER -

Contribution to size effect of yield strength from the stochastics of dislocation source lengths in finite samples

Abstract

Keywords

ASJC Scopus subject areas

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