Characterization of nanoscale NiAl-type precipitates in a ferritic steel by electron microscopy and atom probe tomography
作者： Z.K. Teng , M.K. Miller , G. Ghosh , C.T. Liu , S. Huang
DOI: 10.1016/J.SCRIPTAMAT.2010.03.013
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摘要: The microstructure of NiAl-type (β′) precipitates in an aged ferritic steel (Fe–12.7Al–9Ni–10.2Cr–1.9Mo, at.%) is characterized by transmission and analytical electron microscopy (AEM) atom probe tomography (APT). alloy shows a duplex precipitation β′ particles: primary with average diameter 130 nm secondary 3 nm. Based on APT, the have compositions Ni41.2Al43.6Fe12.7Cr0.8Mo1.4 Ni26.3Al41.6Fe26.9Cr3.3Mo1.7, respectively.
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