Strain rate sensitivity of ductility and fracture behaviors in a Fe-28Al alloy

Mingwei Chen; Dongliang Lin; Yuanming Xia; C. T. Liu

doi:10.1016/s0921-5093(97)00702-8

Strain rate sensitivity of ductility and fracture behaviors in a Fe-28Al alloy

Mingwei Chen, Dongliang Lin, Yuanming Xia, C. T. Liu

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

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
Pages (from-to)	317-323
Number of pages	7
Journal	Materials Science and Engineering A
Volume	239-240
Issue number	1-2
DOIs	https://doi.org/10.1016/s0921-5093(97)00702-8
Publication status	Published - 1997 Dec

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

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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.",

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AU - Chen, Mingwei

AU - Lin, Dongliang

AU - Xia, Yuanming

AU - Liu, C. T.

PY - 1997/12

Y1 - 1997/12

N2 - 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.

AB - 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.

KW - FeAl

KW - Fracture behavior

KW - Intermetallics

KW - Strain rate sensitivity

KW - Tensile impact

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JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

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ER -

Strain rate sensitivity of ductility and fracture behaviors in a Fe-28Al alloy

Abstract

Keywords

ASJC Scopus subject areas

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