Superplasticity and hot rolling of two-phase intermetallic alloy based on TiAl

Journal Article · Fri Mar 15 04:00:00 EST 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(95)00604-4· OSTI ID:215377

Imayev, R; Shagiev, M; Salishchev, G; Imayev, V; Valitov, V ^[1]

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1. Russian Academy of Sciences, Ufa (Russian Federation). Inst. for Metals Superplasticity Problems

The recent investigations of superplasticity (SP) in intermetallic alloys indicate that these materials exhibit lower indices of SP (the relative elongation to rupture) at high enough homologous temperatures and low strain rates compared to conventional alloys. This behavior inhibits application of SP effects in intermetallics. The results of two-phase titanium alloys indicate that the combination of a high stable microstructure with a submicron grain size is necessary to realize the effect of SP at relatively high strain rates. The aim of the present work is to examine the SP behavior of a Ti-46at.%Al intermetallic alloy (TiAl + Ti{sub 3}Al) with micro- and submicron grain sizes and to apply obtained results in hot rolling.

• OSTI ID: 215377
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 6 Vol. 34; ISSN 1359-6462; ISSN XZ503X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
ELECTRON MICROSCOPY
GRAIN GROWTH
GRAIN SIZE
HOT WORKING
INTERMETALLIC COMPOUNDS
MICROSTRUCTURE
OPTICAL MICROSCOPY
PLASTICITY
SAMPLE PREPARATION
STRAIN RATE
TENSILE PROPERTIES
TITANIUM ALLOYS
TWINNING