Physical aspects of plastic deformation in Mg-Al alloys with Sr and Ca.
Result description
Magnesium alloys of AJ (Mg-Al-Sr) and AX (Mg-Al-Ca) series were deformed at temperatures between room temperature and 300 °C. Stress relaxation tests were performed in order to reveal features of the thermally activated dislocation motion. The work hardening rate q = ds/de decreases with increasing stress and temperature. Analysis of the q-s plots revealed the hardening and softening mechanisms operating during the deformation. Internal and effective components of the applied stress were been estimated.Very high values of the internal stress estimated at lower temperatures decrease rapidly with increasing deformation temperature. The apparent activation volume decreases with increasing effective stress. The values of the activation volume as well as the activation enthalpy indicate that the main thermally activated process is most probably the glide of dislocations in non-compact planes..
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Physical aspects of plastic deformation in Mg-Al alloys with Sr and Ca.
Original language description
Magnesium alloys of AJ (Mg-Al-Sr) and AX (Mg-Al-Ca) series were deformed at temperatures between room temperature and 300 °C. Stress relaxation tests were performed in order to reveal features of the thermally activated dislocation motion. The work hardening rate q = ds/de decreases with increasing stress and temperature. Analysis of the q-s plots revealed the hardening and softening mechanisms operating during the deformation. Internal and effective components of the applied stress were been estimated.Very high values of the internal stress estimated at lower temperatures decrease rapidly with increasing deformation temperature. The apparent activation volume decreases with increasing effective stress. The values of the activation volume as well as the activation enthalpy indicate that the main thermally activated process is most probably the glide of dislocations in non-compact planes..
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
1M0556: Eco-Centre for Applied Research of Non-Ferrous Metals
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
International Journal of Materials Research
ISSN
1862-5282
e-ISSN
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Volume of the periodical
100
Issue of the periodical within the volume
3
Country of publishing house
DE - GERMANY
Number of pages
7
Pages from-to
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UT code for WoS article
000264870600002
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BM - Solid-state physics and magnetism
Year of implementation
2009