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Title: Intermetallic-Based High-Temperature Materials

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 aluminizes are presented. The current applications and commercial producers of nickel and iron aluminizes are given. A brief description of the future prospects of intermetallic-based alloys is also given.

Authors:
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
3553
Report Number(s):
ORNL/CP-101117; ED 19 02 00 0; AA 15 10 10 0
ED 19 02 00 0; AA 15 10 10 0; TRN: AH200112%%481
DOE Contract Number:
AC05-96OR22464
Resource Type:
Conference
Resource Relation:
Conference: NACE International CORROSION '99, San Antonio, TX (US), 04/25/1999--04/30/1999; Other Information: PBD: 25 Apr 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALLOYS; CORROSION; IRON; MECHANICAL PROPERTIES; MELTING; NICKEL

Citation Formats

Sikka, V.K.. Intermetallic-Based High-Temperature Materials. United States: N. p., 1999. Web.
Sikka, V.K.. Intermetallic-Based High-Temperature Materials. United States.
Sikka, V.K.. Sun . "Intermetallic-Based High-Temperature Materials". United States. doi:. https://www.osti.gov/servlets/purl/3553.
@article{osti_3553,
title = {Intermetallic-Based High-Temperature Materials},
author = {Sikka, V.K.},
abstractNote = {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 aluminizes are presented. The current applications and commercial producers of nickel and iron aluminizes are given. A brief description of the future prospects of intermetallic-based alloys is also given.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Apr 25 00:00:00 EDT 1999},
month = {Sun Apr 25 00:00:00 EDT 1999}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

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  • 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 aluminizes 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.
  • This book is divided into the following sections: Ni{sub 3}Al -- dislocations and atomic structure; titanium aluminides -- processing; Ni{sub 3}Al -- mechanical properties and processing; silicides; titanium aluminides and exotics; environmental effects and surface treatments; trialuminides and Ti{sub 2}AlNb; oxidation; and niobium aluminides and Laves phases. Separate abstracts were prepared for 116 papers.
  • This book is divided into the following sections: defects; iron aluminides; titanium aluminides -- dislocations and atomic structure; nickel and iron aluminides; NiAl -- dislocations and atomic structure; titanium aluminides -- fracture and creep; NiAl -- mechanical properties and processing; and titanium aluminides -- dislocations and interfaces. Separate abstracts were prepared for 94 papers in this book.
  • The symposium, High-Temperature Ordered Intermetallic Alloys VIII, was held November 30--December 3, 1998, in Boston, Massachusetts, during the MRS Fall Meeting. A number of talks in the titanium-aluminides session focused on dislocation-level mechanisms to explain the observed microstructure-property relationships. Recent work has also focused on creep, fatigue and processing as titanium-aluminide systems mature toward application. Several talks focused on the critical role that point defects play in the mechanical properties of iron-aluminides and nickel-aluminides. Advances in several promising transition-metal silicides were also presented. In particular, niobium-silicides were shown to have excellent fracture toughness and creep strength, although oxidation resistance remainsmore » a concern. Molybdenum-silicides, on the other hand, have excellent oxidation resistance at high temperature, but suffer from poor fracture toughness. Several presentations on Laves phase alloys focused on mechanisms for promoting twinning as a means of improving low-temperature toughness. Finally, the importance of computational modeling, coupled with detailed experimental analysis of dislocations and interfaces, was demonstrated in several presentations on nickel-aluminide-based systems. One hundred and nineteen papers were processed separately for inclusion on the data base.« less