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Author Malard, B.; Pilch, J.; Sittner, P.; Delville, R.; Curfs, C.
Title In situ investigation of the fast microstructure evolution during electropulse treatment of cold drawn NiTi wires Type A1 Journal article
Year 2011 Publication Acta materialia Abbreviated Journal Acta Mater
Volume 59 Issue 4 Pages 1542-1556
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract Microstructural changes taking place during the heat treatment of cold-worked NiTi alloy are of key interest in shape memory alloy technology, since they are responsible for setting the austenite shape and functional properties of the heat-treated alloy. In this work, microstructural evolution during non-conventional electropulse heat treatment of thin NiTi filaments was investigated in a unique high-speed in situ synchrotron X-ray diffraction experiment with simultaneous evaluation of the tensile force and electrical resistivity of the treated wire. The in situ results provide direct experimental evidence on the evolution of the internal stress and density of defects during fast heating from 20 °C to ∼700 °C. This evidence is used to characterize a sequence of dynamic recovery and recrystallization processes responsible for the microstructure and superelastic functional property changes during the electropulse treatments.
Address
Corporate Author Thesis
Publisher Place of Publication Oxford Editor
Language Wos 000287265100023 Publication Date 2010-12-11
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1359-6454; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 5.301 Times cited 48 Open Access
Notes Approved Most recent IF: 5.301; 2011 IF: 3.755
Call Number (up) UA @ lucian @ c:irua:98372 Serial 1583
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Author Tikhomirov, A.S.; Sorokina, N.E.; Shornikova, O.N.; Morozov, V.A.; Van Tendeloo, G.; Avdeev, V.V.
Title The chemical vapor infiltration of exfoliated graphite to produce carbon/carbon composites Type A1 Journal article
Year 2011 Publication Carbon Abbreviated Journal Carbon
Volume 49 Issue 1 Pages 147-153
Keywords A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract Chemical vapor infiltration was used for the production of carbon/carbon composites based on exfoliated graphite and pyrolytic carbon Two different exfoliated graphites compacted to densities of 0 05-0 4 g/cm(3) were used as a preform The influence of the synthesis conditions (temperature, pressure, time etc) on the degree of infiltration, the pyrolytic carbon morphology and the C/C composite characteristics was examined using Raman spectroscopy, scanning electron microscopy and low-temperature nitrogen adsorption (C) 2010 Elsevier Ltd All rights reserved
Address
Corporate Author Thesis
Publisher Place of Publication Oxford Editor
Language Wos 000284977500021 Publication Date 2010-09-08
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0008-6223; ISBN Additional Links UA library record; WoS full record; WoS citing articles
Impact Factor 6.337 Times cited 7 Open Access
Notes Iap Approved Most recent IF: 6.337; 2011 IF: 5.378
Call Number (up) UA @ lucian @ c:irua:99185 Serial 354
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