The Effect of Heat Treatment on Microstructure and Mechanical Properties of Directionally Solidified Nickel-based Superalloy GTD-111, M.Sc. Thesis Sharif University of Technology ; Varahram, Naser (Supervisor)
Abstract
The Ni-based superalloy GTD-111 possesses excellent hot corrosion resistance, high stability and strength at elevated temperature; accordingly, the alloy is used in manufacturing of the first stage blades of powerful gas turbines. In this study, effect of withdrawal rate from Bridgman furnace and precipitation hardening on the microstructure and microhardness of this superalloy were investigated. To this end, several experiments were carried out under growth rates of 1, 6 and 10 mm/min using Bridgman process under vacuum. Afterwards, the effects of homogenization treatment, partial dissolution with two different cooling rates (air and water) along with aging on the microstructure were...
Cataloging briefThe Effect of Heat Treatment on Microstructure and Mechanical Properties of Directionally Solidified Nickel-based Superalloy GTD-111, M.Sc. Thesis Sharif University of Technology ; Varahram, Naser (Supervisor)
Abstract
The Ni-based superalloy GTD-111 possesses excellent hot corrosion resistance, high stability and strength at elevated temperature; accordingly, the alloy is used in manufacturing of the first stage blades of powerful gas turbines. In this study, effect of withdrawal rate from Bridgman furnace and precipitation hardening on the microstructure and microhardness of this superalloy were investigated. To this end, several experiments were carried out under growth rates of 1, 6 and 10 mm/min using Bridgman process under vacuum. Afterwards, the effects of homogenization treatment, partial dissolution with two different cooling rates (air and water) along with aging on the microstructure were...
Find in contentBookmark |
|