Journal
CORROSION SCIENCE
Volume 76, Issue -, Pages 1-5Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.07.041
Keywords
Metal coating; TEM; Segregation
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The L1(0) martensite formed in a Pt-modified NiCoCrAlYTa bond coating has been investigated by atom probe tomography. It was found that obvious segregation of Co and Cr occurred in the micro-twins zone inside the martensite lath. Based upon the compositional analysis, it is known that Pt destabilizes the beta phase and Co and Cr act as beta stabilizers with respect to the beta -> 4 L1(0) martensitic transformation. In addition, some alpha-Cr particles precipitated inside the martensite lath. (C) 2013 Elsevier Ltd. All rights reserved.
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