Correct Interpretation of Creep Rates: A Case Study of Cu

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F15%3A00450057" target="_blank" >RIV/68081723:_____/15:00450057 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.jmst.2015.09.012" target="_blank" >http://dx.doi.org/10.1016/j.jmst.2015.09.012</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmst.2015.09.012" target="_blank" >10.1016/j.jmst.2015.09.012</a>

Result language

angličtina

Original language name

Correct Interpretation of Creep Rates: A Case Study of Cu

Original language description

Traditionally the deformation resistance in creep is characterized by the minimum creep rate and its sensitivity to stress and temperature. The present case study of coarse-grained Cu at 573 K yields a stress exponent n = 9 and a relatively low activation energy. The evolution of the deformation resistance with strain at constant tensile creep load and comparison with creep in compression without fracture indicates that the tensile ?_min result from transition from uniform deformation to strain localization during fracture. This is confirmed by the results of creep in compression where fracture is suppressed. Both the tensile and the compressive creep rate at strains around 0.3 can be described using existing equations for quasi-stationary deformationcontaining the subgrain boundary misorientation ? as structure parameter. While in the latter case constant ? leads to monotonic increase of n with stress, the tensile nine-power-law results from variable ?, and has no simple meaning. The

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JJ - Other materials

OECD FORD branch

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Project

<a href="/en/project/ED1.1.00%2F02.0068" target="_blank" >ED1.1.00/02.0068: Central european institute of technology</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Materials Science & Technology

ISSN

1005-0302

e-ISSN

—

Volume of the periodical

31

Issue of the periodical within the volume

11

Country of publishing house

US - UNITED STATES

Number of pages

4

Pages from-to

1065-1068

UT code for WoS article

000365239600001

EID of the result in the Scopus database

2-s2.0-84947424971