measurement of lattice rotations and internal stresses in over one hundred individual grains during a stress-induced martensitic transformation
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ID: 247866
2015
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Abstract
To better understand the properties of polycrystals at a microscopic scale during cyclic mechanical loading we have measured the relationship between grain orientations, their positions inside the sample and their internal stresses. In this work, in-situ 3DXRD technique was performed on over hundred grains during the stress-induced martensitic transformation in a Cu-Al-Be shape memory alloy. Information about the position, orientation, and stress field was obtained for each austenitic grain. These results have been used to develop a procedure that allows automatic processing for a large number of grains, matching them during loading and leads to a quantitative stress field. A strong heterogeneity of stress state between the grains at the surface and in the volume is evident.
| Reference Key |
el2015matecmeasurement
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|---|---|
| Authors | ;Hachi Younes El;Malard Benoit;Berveiller Sophie;Wright Jonathan |
| Journal | acta botânica brasílica |
| Year | 2015 |
| DOI |
10.1051/matecconf/20153302003
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