Journal
SURFACE & COATINGS TECHNOLOGY
Volume 204, Issue 20, Pages 3173-3181Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2010.03.002
Keywords
Ni-based alloy; Induction melting; Powder metallurgy; Microstructure
Funding
- China Steel Corporation of Taiwan
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An induction-melted Ni-based alloy (NiCrBSi) coating on AISI 4140 steel was prepared using induction melting under different melting conditions. To determine the microstructure and bonding behavior of their interfaces, the techniques of micro-diffraction. X-ray mapping and wavelength dispersive spectrometry (WDS) were employed. The experimental results showed that a white zone appears on the Ni-based alloy side of the final interface, becoming wider and wider with increasing temperature and time, which was identified as a solid solution of gamma-Ni at 1000 degrees C and 1180 degrees C. A higher heating temperature and time caused a more severe iron dilution in the Ni-based alloy and decreased the microhardness. (C) 2010 Elsevier B.V. All rights reserved.
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