Dislocation densities and internal stress in Ni3Al

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F13%3A00386754" target="_blank" >RIV/68081723:_____/13:00386754 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1080/14786435.2012.706371" target="_blank" >http://dx.doi.org/10.1080/14786435.2012.706371</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/14786435.2012.706371" target="_blank" >10.1080/14786435.2012.706371</a>

Result language
angličtina
Original language name
Dislocation densities and internal stress in Ni3Al
Original language description
Dislocation densities have been measured in Ni3Al(Hf) single crystals after deformation at various temperatures and strains. In addition, effective and athermal stresses have been determined by strain dip tests. A model is proposed for the strength anomaly domain which correlates the athermal part of the stress with the operation of dislocation sources, to compensate for the strong dislocation exhaustion. Dislocation density data, which evidence an anomaly in the density with temperature over the stressanomaly domain, are shown to support this model predictions between 373K and 683K for plastic strains larger than 3. 10 -2 but not at yield. In addition, the presence of Hf atoms (3.3 at. %) induces a friction stress close to 63 MPa.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JG - Metallurgy, metal materials
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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