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Author Peirs, J.; Tirry, W.; Amin-Ahmadi, B.; Coghe, F.; Verleysen, P.; Rabet, L.; Schryvers, D.; Degrieck, J.
Title Microstructure of adiabatic shear bands in Ti6Al4V Type A1 Journal article
Year (down) 2013 Publication Materials characterization Abbreviated Journal Mater Charact
Volume 75 Issue Pages 79-92
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract Microstructural deformation mechanisms in adiabatic shear bands in Ti6Al4V are studied using traditional TEM and selected area diffraction, and more advanced microstructural characterisation techniques such as energy dispersive X-ray spectroscopy, high angle annular dark field STEM and conical dark field TEM. The shear bands under investigation are induced in Ti6Al4V samples by high strain rate compression of cylindrical and hat-shaped specimens in a split Hopkinson pressure bar setup. Samples from experiments interrupted at different levels of deformation are used to study the evolution of the microstructure in and nearby the shear bands. From the early stages of adiabatic shear band formation, TEM revealed strongly elongated equiaxed grains in the shear band. These band-like grains become narrower towards the centre of the band and start to fraction even further along their elongated direction to finally result in a nano-crystalline region in the core. In fully developed shear bands, twins and a needle-like martensite morphology are observed near the shear band.
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Corporate Author Thesis
Publisher Place of Publication New York Editor
Language Wos 000314860900011 Publication Date 2012-11-07
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1044-5803; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 2.714 Times cited 56 Open Access
Notes Iuap; Fwo Approved Most recent IF: 2.714; 2013 IF: 1.925
Call Number UA @ lucian @ c:irua:105300 Serial 2065
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