Low temperature superplasticity in 8090 Al-Li alloy

Journal Article · Sat May 01 04:00:00 EDT 1993 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(93)90021-J· OSTI ID:6520406

Pu, H P; Huang, J C ^[1]

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1. National Sun Yat-Sen Univ., Kaohsiung (Taiwan, Province of China)

There have been a number of aluminum alloys which, after being subjected to appropriate thermomechanical treatments (TMTs), exhibit high strain-rate sensitive superplasticity while deformed at a temperature near 0.9T[sub m]. The current study was intended to develop a series of TMT process which will allow the 8090 Al-Li base alloy to have superplastic capability at temperatures below 450 C so as to suppress to a certain degree of the extensive grain growth and Li-loss; at temperature above 300 C so that the flow stress will not be too high to induce intensive cavitation; and in excess of 400% elongation, thus reaching the level for certain commercial applications, if possible.

• OSTI ID: 6520406
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 28:9; ISSN SCRMEX; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CRYSTAL STRUCTURE
DATA
DEFORMATION
EXPERIMENTAL DATA
FABRICATION
FLOW STRESS
GRAIN GROWTH
HEAT TREATMENTS
INFORMATION
LITHIUM ALLOYS
MATERIALS WORKING
MECHANICAL PROPERTIES
MICROSTRUCTURE
NUMERICAL DATA
PLASTICITY
STRESSES
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
THERMOMECHANICAL TREATMENTS