New creep region in pure face-centered cubic metals at low temperatures

Tetsuya Matsunaga; Shouji Ueda; Eiichi Sato

doi:10.1016/j.scriptamat.2010.05.019

New creep region in pure face-centered cubic metals at low temperatures

Tetsuya Matsunaga, Shouji Ueda, Eiichi Sato

Institute for Materials Research (IMR)

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

16 Citations (Scopus)

Abstract

Creep behavior was investigated carefully for typical face-centered cubic (fcc) metals, i.e., high purity Al, Cu, and Pb, below 0.3T_m, where T_m is the melting temperature. All samples showed marked creep behavior at such low temperatures, with an apparent activation energy of 15-30 kJ mol^-1, a stress exponent of 2-5 and a grain size exponent of 0. These results show a new creep region that has not appeared in deformation mechanism maps of pure fcc metals.

Original language	English
Pages (from-to)	516-519
Number of pages	4
Journal	Scripta Materialia
Volume	63
Issue number	5
DOIs	https://doi.org/10.1016/j.scriptamat.2010.05.019
Publication status	Published - 2010 Sep 1

Keywords

Aluminum
Copper
Deformation mechanism map
Lead

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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AU - Ueda, Shouji

AU - Sato, Eiichi

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N2 - Creep behavior was investigated carefully for typical face-centered cubic (fcc) metals, i.e., high purity Al, Cu, and Pb, below 0.3Tm, where Tm is the melting temperature. All samples showed marked creep behavior at such low temperatures, with an apparent activation energy of 15-30 kJ mol-1, a stress exponent of 2-5 and a grain size exponent of 0. These results show a new creep region that has not appeared in deformation mechanism maps of pure fcc metals.

AB - Creep behavior was investigated carefully for typical face-centered cubic (fcc) metals, i.e., high purity Al, Cu, and Pb, below 0.3Tm, where Tm is the melting temperature. All samples showed marked creep behavior at such low temperatures, with an apparent activation energy of 15-30 kJ mol-1, a stress exponent of 2-5 and a grain size exponent of 0. These results show a new creep region that has not appeared in deformation mechanism maps of pure fcc metals.

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KW - Copper

KW - Deformation mechanism map

KW - Lead

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