TY - JOUR
T1 - Effect of dislocation and grain boundary on deformation mechanism in ultrafine-grained interstitial-free steel
AU - Nakazawa, K.
AU - Itoh, S.
AU - Matsunaga, T.
AU - Matsukawa, Y.
AU - Satoh, Y.
AU - Murase, Y.
AU - Abe, H.
PY - 2014
Y1 - 2014
N2 - Ultrafine-grained interstitial-free steel fabricated by the accumulative roll-bonding method was subjected to tensile tests and analyses of AFM, TEM and XRD to identify the effects of interaction between dislocations and grain boundaries (GB) on the deformation mechanism. The AFM analyses indicated that the main deformation mechanism of this material changed from dislocation motion to grain boundary sliding (GBS) with decreasing strain rate. TEM observations and XRD analysis revealed showed that dislocations piled up at GB and the dislocation density decreased with increasing strain. Those suggest the dislocations are absorbed into GB during deformation, activating slip-induced GBS.
AB - Ultrafine-grained interstitial-free steel fabricated by the accumulative roll-bonding method was subjected to tensile tests and analyses of AFM, TEM and XRD to identify the effects of interaction between dislocations and grain boundaries (GB) on the deformation mechanism. The AFM analyses indicated that the main deformation mechanism of this material changed from dislocation motion to grain boundary sliding (GBS) with decreasing strain rate. TEM observations and XRD analysis revealed showed that dislocations piled up at GB and the dislocation density decreased with increasing strain. Those suggest the dislocations are absorbed into GB during deformation, activating slip-induced GBS.
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U2 - 10.1088/1757-899X/63/1/012125
DO - 10.1088/1757-899X/63/1/012125
M3 - Conference article
AN - SCOPUS:84906351518
SN - 1757-8981
VL - 63
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012125
T2 - 6th International Conference on Nanomaterials by Severe Plastic Deformation, NanoSPD 2014
Y2 - 30 June 2014 through 4 July 2014
ER -