HARD WELD OVERLAYS RESISTANT TO RE-HEAT CRACKING
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United States of America Patent
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Aug 21, 2014
app pub date -
Feb 12, 2014
filing date -
Feb 15, 2013
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Abstract
A hard weld overlay which is resistant to cracking when re-heated, and a method for designing such alloys, is disclosed. The alloys are able to resist re-heat cracking through prevention of the precipitation and/or growth of embrittling carbide, borides, or borocarbides at elevated temperatures. In one embodiment, the thermodynamics of the alloy system possess only primary carbides and secondary ferrite carbides.
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