NICKEL BASED ALLOY IN THE QUATERNARY NI-FE-CR-MO SYSTEM HARDENED BY PRECIPITATION OF THE GAMMA PRIME PHASE AND WITHSTANDING MODES OF CORROSION TO BE FOUND, IN PARTICULAR, IN THE OIL INDUSTRY

摘要

14ABSTRACTHARDENED BY PRECIPITATION OF THE GAMMA PRIME PHASE ANDWITHSTANDING MODES OF CORROSION TO BE FOUND, IN PARTICULAR,IN THE OIL INDUSTRYAn alloy composition comprising, in percentage byweight:5 42% to 49% nickel;3.8% to 5% molybdenum;19.5% to 22.5% chromium;1.0% to 1.5% copper;less than 0.020% carbon;10 1.5% to 2.5% titanium;0.5% to 1% aluminum;less than 0.1% manganese;less than 0.1% silicon;less than 0.010% sulfur;15 less than 0.020% phosphorusthe remainder being constituted by iron and byimpurities. A method of transforming an alloy of.theabove composition; a component made of such an alloy; anthe use of such an alloy under conditions of corrosion20 under stress.FIGURE 1