Precipitation of α'-Phase in Fe-Cr-Al Alloy during Thermal Cycling Process

Du Guowei; Cao Huiquan; Cai Jiamin; Ma Ruzhang

doi:10.13374/j.issn1001-053x.1995.04.016

Volume 17 Issue 4

Sep. 2021

Turn off MathJax

Article Contents

Article Navigation > Chinese Journal of Engineering > 1995 > 17(4): 387-390

Du Guowei, Cao Huiquan, Cai Jiamin, Ma Ruzhang. Precipitation of α'-Phase in Fe-Cr-Al Alloy during Thermal Cycling Process[J]. Chinese Journal of Engineering, 1995, 17(4): 387-390. doi: 10.13374/j.issn1001-053x.1995.04.016

Citation:

Du Guowei, Cao Huiquan, Cai Jiamin, Ma Ruzhang. Precipitation of α'-Phase in Fe-Cr-Al Alloy during Thermal Cycling Process[J]. Chinese Journal of Engineering, 1995, 17(4): 387-390. doi: 10.13374/j.issn1001-053x.1995.04.016

Citation:

PDF( 345 KB)

Precipitation of α'-Phase in Fe-Cr-Al Alloy during Thermal Cycling Process

doi: 10.13374/j.issn1001-053x.1995.04.016

1. Department of Materials Physics, USTB, Beijing 100083, PRC;
2. Department of Physies, USTB

Received Date: 1994-10-20
Available Online: 2021-09-06

Abstract

Abstract

By thermal cycling treatment from 1200℃ to room temperature, a considerable acceleration of Cr diffusion to grain boundaries in Fe25Cr5Al alloy occurred due to nonequilibrium Cr element segregation, and resulted in the precipitation of Cr-rich α'-phase at grain boundaries and within grains; micrometer scale of α'-phase was observed at the grain boundary, the phase transformation resulted in the failure of the alloy by a mode of transgranular deavage fracture.
- nonequilibrium segregation,
- cleavage fracture,
- thermal cycling treatment,
- α'-phase precipitation