BibTex format
@article{Bhowmik:2020:10.1016/j.mtla.2020.100635,
author = {Bhowmik, A and Lee, J and Adande, S and Wang-Koh, M and Jun, T-S and Sernicola, G and Ben, Britton T and Rae, CMF and Balint, D and Giuliani, F},
doi = {10.1016/j.mtla.2020.100635},
journal = {Materialia},
pages = {1--14},
title = {Investigating spatio-temporal deformation in single crystal Ni-based superalloys using in-situ diffraction experiments and modelling},
url = {http://dx.doi.org/10.1016/j.mtla.2020.100635},
volume = {9},
year = {2020}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - In this study, we perform a detailed analysis of room temperature deformation of a [100]–orientated singlecrystal Ni-based superalloy, CMSX-4 micropillar, using a combinatorial and complimentary characterisation approach of micro-Laue diffraction coupled with post-deformation microscopy and crystal plasticity modelling.Time-resolved micro-Laue data indicated that deformation was initiated by activation of multiple slip (after 5%engineering strain) which led to the generation of a plastic strain accumulation accompanied by a two-foldincrease in the dislocation density within the micropillar. Subsequent to that, slip occurred primarily on two systems (111)[101] and (111)[101] with the highest Schmid factor in the single crystal micropillar thereby resultingin little accumulation of unpaired GNDs during a major part of the loading cycle, upto 20% strain in this case.Finite element crystal plasticity modelling also showed good agreement with the experimental analyses, wherebysignificant strains were found to develop in the above slip systems with a localisation near the centre of themicropillar. Post-deformation transmission electron microscopy study confirmed that deformation was mediatedthrough a/2<110> dislocations on {111} planes in the -phase, while high stress levels led to shearing of the ′precipitates by a/2<110> partials bounding an anti-phase boundary free to glide on the {111} planes. Duringthe deformation of the single crystal micropillar, independent rotations of the and ′ phases were quantified byspatially resolved post-deformation micro-Laue patterns. The degree of lattice rotation in the -phase was higherthan that in the ′-phase.
AU - Bhowmik,A
AU - Lee,J
AU - Adande,S
AU - Wang-Koh,M
AU - Jun,T-S
AU - Sernicola,G
AU - Ben,Britton T
AU - Rae,CMF
AU - Balint,D
AU - Giuliani,F
DO - 10.1016/j.mtla.2020.100635
EP - 14
PY - 2020///
SN - 2589-1529
SP - 1
TI - Investigating spatio-temporal deformation in single crystal Ni-based superalloys using in-situ diffraction experiments and modelling
T2 - Materialia
UR - http://dx.doi.org/10.1016/j.mtla.2020.100635
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000537621200059&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - https://www.sciencedirect.com/science/article/pii/S2589152920300521?via%3Dihub
UR - http://hdl.handle.net/10044/1/88094
VL - 9
ER -