Stress-induced transition from modulated 14M to non-modulated martensite in Ni?Mn?Ga allo

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F15%3A00455296" target="_blank" >RIV/68378271:_____/15:00455296 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.actamat.2015.02.028" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2015.02.028</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.actamat.2015.02.028" target="_blank" >10.1016/j.actamat.2015.02.028</a>

Result language
angličtina
Original language name
Stress-induced transition from modulated 14M to non-modulated martensite in Ni?Mn?Ga allo
Original language description
In situ straining of seven-layered (14M) martensite of Ni-Mn-Ga alloy was done with transmission electron microscope (TEM). During straining, the intermartensitic transition from 14M to non-modulated martensite (NM) occurred via motion of partial dislocation with a Burgers vector b = 1/6[1 (1) over bar 0] along the basal plane of 14M. High resolution TEM studies revealed that the moving partial at the end of the fault is actually a pair of partial dislocations leading to a two-layered fault. The fault is twin related to the adjoining five-layered basal plane forming complete seven-layered nanotwinned structure. Results demonstrate that the 14M to NM transition is a detwinning process of these nanotwins, and seems to confirm the nanotwin nature of the long-period stacking-order structure of 14M martensite. Lattice parameters of the average structure are affected by the regularity of the stacking sequence, i.e., by the volume fraction of the two-layer nanotwins and their distribution.
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
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
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

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