Deformation structures in cold rolled Nb-(10--16) at. % Al solid solutions

Journal Article · Sat Oct 01 00:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90496-0· OSTI ID:6983391

Yang, S S ^[1]; Vasudevan, V K ^[2]

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1. Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering
2. Univ. of Cincinnati, OH (United States). Dept. of Materials Science and Engineering

Alloys based on the refractory intermetallic compound Nb[sub 3]Al have recently become of interest for applications at very high temperatures (1,000--1,600 C) in the new generation of aircraft propulsion systems. This compound has an A15 structure, a density of 7.29 g/cm[sup 3] and forms by a peritectic reaction from the liquid below 1,960 C. Moreover, it exists in a two-phase equilibrium with a b.c.c. Nb-Al solid solution over a wide composition range between [approximately]9 and 18 at.% Al. Recent results have shown that monolithic Nb[sub 3]Al is quite strong and displays superior creep resistance above 1,000 C, although it is very brittle at low temperatures. With regard to the latter, it has been shown recently that improved toughness at ambient temperatures can be achieved by the presence of the Nb solid solution as a second phase. However, apart from some recent work, limited studies of transformations and deformation characteristics of binary solid solutions have been reported. In this paper, results of such a study of Nb-(10--16)Al alloys are reported.

• OSTI ID: 6983391
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:7; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
DATA
DEFORMATION
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
INFORMATION
MICROSCOPY
MICROSTRUCTURE
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
NUMERICAL DATA
OPTICAL MICROSCOPY
TRANSMISSION ELECTRON MICROSCOPY