Intermetallic-Based High-Temperature Materials Page: 1 of 23
This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
C3 0. C
S0.
3' p g p
00m9 0
7* 0AlCVinod K. Sikka
Metals and Ceramics Division
Oak Ridge National Laboratory
P.O. Box 2008
Oak Ridge, Tennessee 37831-6083QObsl
ABSTRACT
The intermetallic-based alloys for high-temperature applications are introduced. General characteristics of
intermetallics are followed by identification of nickel and iron aluminides as the most practical alloys for commercial
applications. An overview of the alloy compositions, melting processes, and mechanical properties for nickel and
iron aluminides are presented. The current applications and commercial producers of nickel and iron aluminides
are given. A brief description of the future prospects of intermetallic-based alloys is also given.
Keywords: Intermetallics, nickel aluminides, iron aluminides, Ni3AI, Fe3AI, FeAI, tensile properties, creep
properties, castings, applications
INTRODUCTION
Materials of construction are limiting factors in many production processes. The important properties of
concem for the application of materials at high temperatures as a minimum include the following:-a ECE Nfl
Melting:
Mechanical properties:
Corrosion:
Weldability:
Manufacturing:
Machinability:Melting point 2 1350C with no incipient melting.
Tensile, creep, fracture toughness, and fatigue.
Oxidation, carburization, and sulfidation resistance.
Performed by gas tungsten arc , metal inert gas , submerged arc , or shielded metal arc .
Ease of manufactuing by standard processes.
Ease of machining by standard processes.The most commonly used materials of construction include: (1) steels (carbon and alloy steels),
(2) stainless steels (300 and 400 series), (3) nickel-based alloys, (4) titanium-based alloys, and (5) aluminum-
based alloys. Each class of materials plays an important role in terms of their unique combination of properties.
Upcoming Pages
Here’s what’s next.
Search Inside
This article can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Article.
Sikka, V.K. Intermetallic-Based High-Temperature Materials, article, April 25, 1999; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc685459/m1/1/: accessed April 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.