T. E. Howson
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View article: Predicting Microstructural Transitions via Computer Modeling and the Importance of Strain and Temperature in IN718 Forging Design
Predicting Microstructural Transitions via Computer Modeling and the Importance of Strain and Temperature in IN718 Forging Design Open
Press forged IN718 is widely used for high strength gas turbine engine disks.Meeting yield strength requirements with statistical process capability is important for these high strength applications and that capability depends on the micro…
View article: The Microstructural Response of As-HIP P/M U-720 to Thermomechanical Processing
The Microstructural Response of As-HIP P/M U-720 to Thermomechanical Processing Open
Udimet 720 is a high strength nickel-base superalloy which in this case was produced via powder metallurgy processing: the billet was in the as-HIP condition. The microstructural response was studied as a function of thermal exposure in th…
View article: Progress Toward a Deformation Map for Fine Grain Alloy 718 Billet
Progress Toward a Deformation Map for Fine Grain Alloy 718 Billet Open
A deformation map, or microstructural map, has been developed for Alloy 718.This map defines microstructures that are obtained as a function of temperature, strain rate, and strain when forging fine grain Alloy 718 billet.The map delineate…
View article: Utilization of Computer Modeling in Superalloy Forging Process Design
Utilization of Computer Modeling in Superalloy Forging Process Design Open
The forging of a superalloy high pressure turbine disk has been simulated using ALPID, an FEM code for analysis of large plastic deformation problems. The modeling was carried out to determine the cause of coarse grains and relatively high…
View article: Very Slow Strain Rate Stress-Strain Behavior and Resisting Stress for Creep in a Nickel-Base Superalloy
Very Slow Strain Rate Stress-Strain Behavior and Resisting Stress for Creep in a Nickel-Base Superalloy Open
Twb~e n;Dtens-ntin b&avLotr ad Udimti-7 7 5 ,& n;tudied oveh a Range Itmmptiduhe /range.(amb&vLt -9bZoCl und down to 1 Oe6 pm hecond h,thcLiK na.fen .The. bwetr a;DrcLin ha& y