Superplasticity in Fe[sub 3]Al-Ti alloy with large grains

Journal Article · Thu Dec 01 00:00:00 EST 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90055-8· OSTI ID:6890564

Lin, D; Shan, A; Li, D ^[1]

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1. Shanghai Jiao Tong Univ. (China). Dept. of Materials Science

In this paper the authors report the superplasticity behavior in Fe[sub 3]Al with large grains. The tensile behavior of one Fe[sub 3]Al based alloy, Fe-28Al-2Ti (in atomic percent), under different strain rates at high temperatures was examined. The microstructure before and after deformation was observed by optical microscopy and transmission electron microscopy (TEM). The results revealed that the Fe[sub 3]Al alloy with a large grain size of 100[mu]m exhibited a large elongation of more than 150% from 800 C to 900 C with a strain rate range of 10[sup [minus]4] [approximately] 10[sup [minus]3]/s. The maximum elongation is 332.8% at 850 C under a strain rate of 1 [times] 10[sup [minus]3]/s. A tensile elongation of up to 507% was obtained by slightly changing the gauge section and/or modifying the composition. The reason for the large elongation is ascribed to the dynamic recovery and recrystallization in this alloy at high temperature.

• OSTI ID: 6890564
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 31:11; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
MICROSTRUCTURE
PLASTICITY
IRON BASE ALLOYS
TITANIUM ALLOYS
DEFORMATION
EXPERIMENTAL DATA
GRAIN SIZE
ALLOYS
DATA
INFORMATION
IRON ALLOYS
MECHANICAL PROPERTIES
NUMERICAL DATA
SIZE
360103* - Metals & Alloys- Mechanical Properties
360102 - Metals & Alloys- Structure & Phase Studies