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Title: Investigation of a new type of Al{sub 3}Ti-based L1{sub 2} alloy with second phase precipitation

Abstract

Since the L1{sub 2} structured Al{sub 3}Ti alloy exists only in a narrow compositional range, further alloying of the single phase L1{sub 2} alloy to improve its property seems hardly successful. Developing two-phase or multiphase Al{sub 3}Ti alloys may be an effective approach for strengthening and toughening. In this article, a new type of Al{sub 3}Ti-based alloy which has a L1{sub 2} matrix with precipitates of a second phase is reported. The quaternary alloys based on Al{sub 67}Mn{sub 8}Ti{sub 25}, and modified with Nb additions, consist of an L1{sub 2} matrix and DO{sub 22} second phase particles in the annealed state, but the second phase can be dissolved by solution treatment and precipitated during high temperature aging. Remarkable strengthening and promising compressive ductility were exhibited by the experimental alloy. The influence of composition on the microstructure and properties of the alloys are reported also.

Authors:
; ; ; ;  [1]
  1. Shanghai Jiao Tong Univ. (China). Dept. of Materials Science
Publication Date:
OSTI Identifier:
72522
Report Number(s):
CONF-941144-
ISBN 1-55899-265-0; TRN: IM9530%%134
Resource Type:
Book
Resource Relation:
Conference: Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 28 Nov - 9 Dec 1994; Other Information: PBD: 1995; Related Information: Is Part Of High-temperature ordered intermetallic alloys VI: Part 2. Materials Research Society symposium proceedings Volume 364; Horton, J. [ed.] [Oak Ridge National Lab., Oak Ridge, TN (United States)]; Baker, I. [ed.] [Dartmouth College, Hanover, NH (United States)]; Hanada, Shuji [ed.] [Tohoku Univ., Sendai (Japan)]; Noebe, R.D. [ed.] [NASA Lewis Research Center, Cleveland, OH (United States)]; Schwartz, D.S. [ed.] [McDonnell Douglas Aerospace, St. Louis, MO (United States)]; PB: 760 p.
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM BASE ALLOYS; MICROSTRUCTURE; MECHANICAL PROPERTIES; TITANIUM ALLOYS; MANGANESE ALLOYS; NIOBIUM ALLOYS; INTERMETALLIC COMPOUNDS; CHEMICAL COMPOSITION; EXPERIMENTAL DATA

Citation Formats

Hu, G, Sun, J, Weng, X, Li, T, and Chen, S. Investigation of a new type of Al{sub 3}Ti-based L1{sub 2} alloy with second phase precipitation. United States: N. p., 1995. Web.
Hu, G, Sun, J, Weng, X, Li, T, & Chen, S. Investigation of a new type of Al{sub 3}Ti-based L1{sub 2} alloy with second phase precipitation. United States.
Hu, G, Sun, J, Weng, X, Li, T, and Chen, S. 1995. "Investigation of a new type of Al{sub 3}Ti-based L1{sub 2} alloy with second phase precipitation". United States.
@article{osti_72522,
title = {Investigation of a new type of Al{sub 3}Ti-based L1{sub 2} alloy with second phase precipitation},
author = {Hu, G and Sun, J and Weng, X and Li, T and Chen, S},
abstractNote = {Since the L1{sub 2} structured Al{sub 3}Ti alloy exists only in a narrow compositional range, further alloying of the single phase L1{sub 2} alloy to improve its property seems hardly successful. Developing two-phase or multiphase Al{sub 3}Ti alloys may be an effective approach for strengthening and toughening. In this article, a new type of Al{sub 3}Ti-based alloy which has a L1{sub 2} matrix with precipitates of a second phase is reported. The quaternary alloys based on Al{sub 67}Mn{sub 8}Ti{sub 25}, and modified with Nb additions, consist of an L1{sub 2} matrix and DO{sub 22} second phase particles in the annealed state, but the second phase can be dissolved by solution treatment and precipitated during high temperature aging. Remarkable strengthening and promising compressive ductility were exhibited by the experimental alloy. The influence of composition on the microstructure and properties of the alloys are reported also.},
doi = {},
url = {https://www.osti.gov/biblio/72522}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 1995},
month = {Sat Jul 01 00:00:00 EDT 1995}
}

Book:
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