Microstructure evolution of a Fe<sub>3</sub>Al-based alloy with coarse initial grains deformed at elevated temperature

WANG Fei; LI Longfei; YANG Wangyue; SUN Zuqing

doi:10.13374/j.issn1001-053x.2007.10.008

Volume 29 Issue 10

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WANG Fei, LI Longfei, YANG Wangyue, SUN Zuqing. Microstructure evolution of a Fe3Al-based alloy with coarse initial grains deformed at elevated temperature[J]. Chinese Journal of Engineering, 2007, 29(10): 994-998. doi: 10.13374/j.issn1001-053x.2007.10.008

Citation:

WANG Fei, LI Longfei, YANG Wangyue, SUN Zuqing. Microstructure evolution of a Fe₃Al-based alloy with coarse initial grains deformed at elevated temperature[J]. Chinese Journal of Engineering, 2007, 29(10): 994-998. doi: 10.13374/j.issn1001-053x.2007.10.008

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Microstructure evolution of a Fe₃Al-based alloy with coarse initial grains deformed at elevated temperature

doi: 10.13374/j.issn1001-053x.2007.10.008

1. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;
2. Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China

Received Date: 2006-04-25
Rev Recd Date: 2006-08-10

Available Online: 2021-08-16

Abstract

Abstract

The microstructure evolution of a Fe₃Al-based alloy was investigated by uniaxial compression tests on a Gleeble 1500 hot simulation test machine at 850℃ and a strain rate of 10^-3s^-1. The results indicated that under the present deformation conditions the dynamic recrystallization of the Fe₃Al-based alloy occurred. At low strain, the nuclei of dynamic recrystallization formed by bulging of initial grain boundaries, i.e. discontinuous dynamic recrystallization occurred; but the growth of the nuclei became more difficult with increasing strain. At large strain, finer dynamic recrvstallized grains formed by the process of continuous dynamic recrystallization.
- Fe₃Al-based alloys,
- dynamic recrystallization,
- bulging,
- dynamic recovery,
- substructure