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SUPERCALINATE BASED ON CLEAN-NICKEL HARDENING BY PRECIPITATION AND ITEM MANUFACTURED FROM THE SUPERLIGA ON COBALT-NICKEL BASED BY PRECIPITATION
SUPERCALINATE BASED ON CLEAN-NICKEL HARDENING BY PRECIPITATION AND ITEM MANUFACTURED FROM THE SUPERLIGA ON COBALT-NICKEL BASED BY PRECIPITATION
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机译：基于沉淀法清洁镍硬化的超高岭土和基于沉淀法制备的钴镍上超藻制备的项目
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摘要
a precipitation-hardenable cobalt-nickel superalloy is disclosed. the alloy is characterized by the following weight percentage composition: from about 0.01 to about 0.15; cr from about 6.00 to about 15.00; ni from about 30.00 to about 45.00; w from about 3.00 to about 15.00; ti from about 0.50 to about 4.00; from about 3.00 to about 7.00; nb to about 2.50; up to about 6.00; hf to about 1.50; zr to about 1.50; b to about 0.20; up to about 2.50; up to about 1.50. the balance of the alloy is cobalt and usual impurities. the alloy provides a new combination of strength and ductility after prolonged exposure to elevated operating temperatures, as found in gas turbines and jet engines. a fine-grained steel article made of the alloy is also disclosed. the steel article is also characterized by a continuous surface layer of al2o3 and cr2o3 that protects the alloy from oxidation at high operating temperatures.
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