Development of a nickel-base superalloy using statistically designed experiments.
Statistical techniques to develop nickel base superalloy with high temperature capabilities for jet engine turbine bucket applications
Collins, H. E.↗
Engineering topics
Quigg, R. J.
Publications and source records attributed to Quigg, R. J..
Nickel base alloy with improved stress rupture properties
Nickel base superalloy with improved stress rupture properties is used for jet aircraft turbine blades. This alloy is capable of maintaining its strength and its creep, oxidation, and thermal fatigue resistance at high temperature.
Collins, H. E.↗
Development of high temperature nickel-base alloys for jet engine turbine bucket applications
A program has been initiated to develop a material with superior properties at elevated temperatures for utilization in turbine blade applications. A nickel-base superalloy can provide the necessary high temperature strength by using the maximum capability of the three available strengthening mechanisms - intermetallic gamma prime precipitation (Ni3Al), solid solution strengthening with refractory and precious metals, and stable carbide formations through the addition of strong carbide forming elements. A stress rupture test at 2000 deg F and 15,000 psi was formulated to approximate the desired properties. By adding varying amounts of refractory metals (Mo, W and Ta) it was possible to statistically analyze the effects of each in a basic superalloy composition containing fixed amounts of Co, Cr, C, B, Sr, and Ni at three separate levels of AL and Ta. Metallographic analysis correlated with the mechanical properties of the alloys; those with few strengthening phases were weak and ductile and those with excessive amounts of intermetallic phases present in undesirable morphologies were brittle.
SUPERALLOY↗