Ni-BASED SUPERALLOY WITH EXCELLENT OXIDIZATION RESISTANCE AND CREEP PROPERTY AND METHOD OF MANUFACTURING THE SAME
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United States of America Patent
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Issued Date -
May 26, 2016
app pub date -
Dec 9, 2014
filing date -
Nov 24, 2014
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Abandoned
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Abstract
The present disclosure relates to a Ni-based superalloy with excellent oxidation resistance and creep properties, which is suitable for parts of energy plants and chemical plants under a corrosive oxidative/reductive atmosphere, which stainless steel cannot withstand, through adjustment of alloy components and control of process conditions and a method of manufacturing the same. The Ni-based superalloy includes: chromium (Cr): 20˜26 wt %, tungsten (W): 13˜17 wt %, molybdenum (Mo): 1˜5 wt %, manganese (Mn): 0.1˜1.0 wt %, silicon (Si): 0.1˜0.6 wt %, aluminum (Al): 0.1˜1.0 wt %, lanthanum (La): 0.01˜0.06 wt %, carbon (C): 0.01˜0.20 wt %, and the balance of nickel (Ni) and unavoidable impurities.
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