Abstract
The mechanical properties of Fe-28Al under a strain rate ranging from 10-4 to 1300 s -1 were tested in air and water at room temperature. The ductility, yield stress and ultimate stress of Fe-28Al are sensitive to the strain rate and gradually increase with strain rate in all test ranges. The fracture surface observations indicated that the fracture mode of Fe-28Al varies from complete transgranular fracture to a mixture of transgranular cleavage and intergranular fracture with strain rate increasing from 10-4 to 1300 s-1. It is proved that environmental embrittlement is a main factor controlling the ductility of Fe-28Al, even at high strain rate, and grain boundaries play different roles in the ductility of Fe-28Al at low and high strain rate.
Original language | English |
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Pages (from-to) | 317-323 |
Number of pages | 7 |
Journal | Materials Science and Engineering A |
Volume | 239-240 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 1997 Dec |
Externally published | Yes |
Keywords
- FeAl
- Fracture behavior
- Intermetallics
- Strain rate sensitivity
- Tensile impact
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering