Forgeable nickel-base super alloy

摘要

A forgeable nickel-base super alloy free from cobalt and comprising the following essential constituent elements in weight percentage: Carbon-0.04 to 0.25%; Chromium-10.0 to 25.0%; Tungsten-10.0 to 25.0%; Aluminum-0.1 to 1.0%; At least one element selected from the group consisting of 0.005 to 0.05% calcium, 0.001 to 0.02% magnesium and a 0.001 to 0.02% rare earth element-0.001 to 0.05%; and Nickel and other inevitable impurities-balance; said forgeable nickel-base super alloy including a forgeable nickel-base super alloy added with, as required, the following additional elements in weight percentage in addition to the aforementioned essential elements: Zirconium-0.005 to 0.1%; and/or At least one element selected from the group consisting of 0.1 to 3.0% niobium and 0.1 to 1.5% hafnium-0.1 to 3.0%.