Creep and stress rupture of oxide dispersion strengthened mechanically alloyed inconel alloy MA 754

1980 ◽  
Vol 11 (9) ◽  
pp. 1599-1607 ◽  
Author(s):  
T. E. Howson ◽  
J. E. Stulga ◽  
J. K. Tien
Keyword(s):  
Stress Rupture ◽  
Oxide Dispersion Strengthened ◽  
Oxide Dispersion ◽  
Creep And Stress Rupture ◽  
Mechanically Alloyed ◽  
Inconel Alloy

Fine Microstructure of a Mechanically Alloyed Oxide Dispersion Strengthened Nickel-Base Superalloy

1977 ◽  
Vol 35 ◽  
pp. 298-299
Author(s):  
Jordi Marti ◽  
Timothy E. Howson ◽  
David Kratz ◽  
John K. Tien
Keyword(s):  
Solid Solution ◽  
Volume Fraction ◽  
Stress Rupture ◽  
Oxide Dispersion Strengthened ◽  
Solid Solution Alloy ◽  
Oxide Dispersion ◽  
Creep And Stress Rupture ◽  
Mechanically Alloyed ◽  
Fine Microstructure ◽  
Nickel Base

The previous paper briefly described the fine microstructure of a mechanically alloyed oxide dispersion strengthened nickel-base solid solution. This note examines the fine microstructure of another mechanically alloyed system. This alloy differs from the one described previously in that it is more generously endowed with coherent precipitate γ forming elements A1 and Ti and it contains a higher volume fraction of the finely dispersed Y2O3 oxide. An interesting question to answer in the comparative study of the creep and stress rupture of these two ODS systems is the role of the precipitate γ' in the mechanisms of creep and stress rupture in alloys already containing oxide dispersoids.The nominal chemical composition of this alloy is Ni - 20%Cr - 2.5%Ti - 1.5% A1 - 1.3%Y203 by weight. The system receives a three stage heat treatment-- the first designed to produce a coarse grain structure similar to the solid solution alloy but with a smaller grain aspect ratio of about ten.

scholarly journals High Temperature Corrosion Resistance of Mechanically Alloyed Products in Gas Turbine Environments

1990 ◽  
Author(s):  
G. D. Smith ◽  
J. J. Fischer
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Gas Turbine ◽  
Oxide Dispersion Strengthened ◽  
High Temperature Corrosion ◽  
Oxide Dispersion ◽  
Corrosion Performance ◽  
Mechanically Alloyed ◽  
Inconel Alloy ◽  
Scale Types

The high temperature corrosion performance of the heat resistant, mechanically alloyed, oxide dispersion strengthened alloys, INCOLOY® alloy MA 956, INCONEL® alloy MA 754, INCONEL alloy MA 760 and INCONEL alloy MA 6000 is described in this paper. Oxidation and oxidation-sulfidation data for a range of temperatures and environmental conditions are presented, along with comparative data on five wrought alloys. Scale types are related to performance.

The Fine Microstructure of a Mechanically Alloyed Oxide Dispersion Strengthened Solid Solution

1977 ◽  
Vol 35 ◽  
pp. 264-265
Author(s):  
Jordi Marti ◽  
John E. Stulga ◽  
John K. Tien
Keyword(s):  
Solid Solution ◽  
Stress Rupture ◽  
Oxide Dispersion Strengthened ◽  
Nickel Base Superalloy ◽  
High Temperature Strength ◽  
Oxide Dispersion ◽  
Mechanically Alloyed ◽  
Base Solid Solution ◽  
Oxide Particles ◽  
Nickel Base

A recent development in powder metallurgy technology, known as mechanical alloying (1), can find applications in alloys which cannot be manufactured by conventional processes, due to high melting temperatures, chemical incompatibility of constituents in the melt, or high reactivity. The process has been utilized in the production of a nickel-base superalloy and a nickel-base solid solution which contain dispersions of fine and inert oxide particles for high temperature strength. As part of a study of the creep and stress rupture behavior of these alloys, the as-received and crept microstructures have been examined using the transmission electron microscope. This note discusses the fine-scale microstructure of the mechanically alloyed oxide dispersion strengthened (ODS) nickel-base solid solution.The alloy has a nominal chemical composition in weight percent of Ni - 20Cr - 0.5Ti - 0.3A1 with O.6Y2O3 oxide particles.

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