TY - JOUR
T1 - Fault-induced polytypism in (Cr, Fe)2B
AU - Goldfarb, I.
AU - Kaplan, W. D.
AU - Ariely, S.
AU - Bamberger, M.
PY - 1995/10
Y1 - 1995/10
N2 - The microstructures of chromium and iron borides formed during laser surface alloying of AISI 1045 steel with CrB were examined by transmission electron microscopy combined with selected-area electron diffraction and X-ray-dispersive spectroscopy. It was found that the heavily faulted (Cr, Fe)2B phase contains a microsyntactic existence of several polytypes, including one-dimensionally disordered structures as well as fully developed lamellae of ordered polytypes, similar to those found in SiC. Classification of (Cr, Fe)2B as a polytype was made for the first time and is described in detail. It was found that in this case polytypism originates from the (Fe, Cr)2B → (Cr, Fe)2B transformation in the solid state by the introduction of stacking faults in the (Fe, Cr)2B phase, owing to a close similarity between the structures of both phases. This transformation is directly responsible for the mentioned microsyntaxy and was experimentally observed through transmission electron microscopy.
AB - The microstructures of chromium and iron borides formed during laser surface alloying of AISI 1045 steel with CrB were examined by transmission electron microscopy combined with selected-area electron diffraction and X-ray-dispersive spectroscopy. It was found that the heavily faulted (Cr, Fe)2B phase contains a microsyntactic existence of several polytypes, including one-dimensionally disordered structures as well as fully developed lamellae of ordered polytypes, similar to those found in SiC. Classification of (Cr, Fe)2B as a polytype was made for the first time and is described in detail. It was found that in this case polytypism originates from the (Fe, Cr)2B → (Cr, Fe)2B transformation in the solid state by the introduction of stacking faults in the (Fe, Cr)2B phase, owing to a close similarity between the structures of both phases. This transformation is directly responsible for the mentioned microsyntaxy and was experimentally observed through transmission electron microscopy.
UR - http://www.scopus.com/inward/record.url?scp=21844500107&partnerID=8YFLogxK
U2 - 10.1080/01418619508239947
DO - 10.1080/01418619508239947
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AN - SCOPUS:21844500107
SN - 0141-8610
VL - 72
SP - 963
EP - 979
JO - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
JF - Philosophical Magazine A: Physics of Condensed Matter, Structure, Defects and Mechanical Properties
IS - 4
ER -