Nickel-based superalloy

Abstract

The invention discloses a nickel-based superalloy, which consists of the following components in percentage by weight: 22.5 to 24.5 percent of Cr, 7.0 to 8.0 percent of Co, 6.5 to 7.5 percent of W, 3.0 to 4.0 percent of Mo, 1.2 to 1.8 percent of Al, 1.5 to 2.5 percent of Ti, 2.0 to 3.0 percent of Nb, 1.0 to 2.0 percent of Mn, 2.0 to 4.0 percent of Fe, 0.02 to 0.08 percent of B, 0.5 to 1.5 percent of Ce, less than or equal to 0.1 percent of C, less than or equal to 0.2 percent of Si, less than or equal to 0.008 percent of P, less than or equal to 0.008 percent of S and the balance of Ni.

Description

technical field [0001] The invention relates to the field of alloys, in particular to a nickel-based superalloy. Background technique [0002] The Inconel718 alloy was successfully developed by the Houston Branch of the American International Nickel Corporation and was published in 1959. It is a body-centered square Ni 3 Nb(γ”) and face centered cubic Ni 3 (Al,Ti,Nb)(γ') precipitation strengthened nickel-chromium-iron based wrought superalloys. The alloy has high tensile strength, yield strength, durable strength and plasticity at -253-650°C, and has good corrosion resistance, radiation resistance, thermal processing and welding properties. [0003] In the context of the rapid development of superalloy overall precision casting technology, Inconel718 alloy, originally developed as a deformed superalloy, has also been used in the aerospace industry in the form of casting alloy since 1965. The corresponding casting alloy grade is Inconel718C. In recent years, with the devel...

AI Technical Summary

Problems solved by technology

With the development of technology, higher and higher requirements are put forward for the alloy of the combustion chamber wall. The traditional Inconel718 and corresponding alternative alloys can no longer meet the demand. Therefore, it is necessary to develop new superalloy materials