The phenomenon of superplasticity in FeAl-Ti alloy with large grains

Book · Tue Aug 01 04:00:00 EDT 1995

OSTI ID:78325

Li, D; Shan, A; Liu, Y; Lin, D ^[1]

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

The phenomenon of superplasticity in an ordered FeAl based alloy is reported in this paper for the first time. The behavior of superplastic deformation for the FeAl based alloy (Fe-36.5at.%2at.%Ti) with large grains of above 300 {mu}m has been examined at 1,000 C in a strain rate range from 1.39 {times} 10{sup {minus}4}/s to 2.78 {times} 10{sup {minus}2}/s. The maximum elongation of 208% for the FeAl based alloy with large grains has been obtained and the index of strain rate sensitivity, the m value, has a range of values from 0.25 to 0.42. The reason for the large elongation is ascribed to the dynamic recovery and recrystallization during deformation in this large grained alloy at high temperatures.

• OSTI ID: 78325
• Report Number(s): CONF-941144--; ISBN 1-55899-265-0
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
EXPERIMENTAL DATA
FLOW STRESS
GRAIN SIZE
HEAT RESISTING ALLOYS
IRON BASE ALLOYS
PLASTICITY
TEMPERATURE RANGE 1000-4000 K
TITANIUM ALLOYS