@article{Weekes:2015:10.1016/j.actamat.2015.03.037,
author = {Weekes, HE and Vorontsov, VA and Dolbnya, IP and Plummer, JD and Giuliani, F and Britton, TB and Dye, D},
doi = {10.1016/j.actamat.2015.03.037},
journal = {Acta Materialia},
pages = {81--96},
title = {In situ micropillar deformation of hydrides in Zircaloy-4},
url = {http://dx.doi.org/10.1016/j.actamat.2015.03.037},
volume = {92},
year = {2015}
}

Download

TY  - JOUR
AB  - Deformation of hydrided Zircaloy-4 has been examined using in situ loading of hydrided micropillars in the scanning electron microscope and using synchrotron X-ray Laue microbeam diffraction. Results suggest that both the matrix and hydride can co-deform, with storage of deformation defects observed within the hydrides, which were twinned. Hydrides placed at the plane of maximum shear stress showed deformation within the hydride packet, whilst packets in other pillars arrested the propagation of shear bands. X-ray Laue peak broadening, prior to deformation, was associated with the precipitation of hydrides, and during deformation plastic rotation and broadening of both the matrix and hydride peaks were observed. Post-mortem TEM of the deformed pillars has indicated a greater density of dislocations associated with the precipitated hydride packets, while the observed broadening of the hydride electron diffraction spots further suggests that plastic strain gradients were induced in the hydrides by compression.
AU  - Weekes,HE
AU  - Vorontsov,VA
AU  - Dolbnya,IP
AU  - Plummer,JD
AU  - Giuliani,F
AU  - Britton,TB
AU  - Dye,D
DO  - 10.1016/j.actamat.2015.03.037
EP  - 96
PY  - 2015///
SN  - 1873-2453
SP  - 81
TI  - In situ micropillar deformation of hydrides in Zircaloy-4
T2  - Acta Materialia
UR  - http://dx.doi.org/10.1016/j.actamat.2015.03.037
UR  - http://hdl.handle.net/10044/1/24044
VL  - 92
ER  - 

Download