Open AccessTask 8.4 - High Temperature Turbine Disk Development
Publication year - 1997
Language(s) - English
Resource type - Reports
DOI - 10.2172/634891
Subject(s) - nimonic , materials science , liquidus , casting , metallurgy , alloy , investment casting , ultimate tensile strength , superalloy , mechanical engineering , charpy impact test , composite material , engineering , mold
The goal of this task is to demonstrate a bonding technique to produce a dual-alloy turbine disk concept which will satisfy the diverse property requirements of the rim and hub areas of the disk. The program examines methods of attaching a cast superalloy rim with sufficient rupture strength to a fine grain hub materials with the required LCF properties. The goals of the program were established in the context of a preliminary turbine design by Solar Turbines, Inc. designated ATS 5. The initial target for the ATS 5 application was to allow rim operating temperatures in the 1350-1400 {degrees} F range. The life goal of the Dual-Alloy Disk was envisioned to maintain Solar`s standard turbine disk philosophy of 1000,000 hours