Deformation Behavior of Polycrystalline Fe-Ga-B Alloy at Elevated Temperature

Abstract:

In this work, the hot deformation behavior of Fe₈₃Ga₁₇ alloy with 1.0 at.% B addition was investigated by plane strain compression tests on a Gleeble-1500 hot simulation test machine in the deformation temperature range of 350 to 900 °C. The effects of strain rate range 0.1-10 s^-1 on flow stress and microstructure were also studied. It was indicated that as the temperature increases, significant softening of the material occurred, and significant dynamic recovery at low strain rate (0.1 s^-1) and recrystallization at high strain rate (10 s^-1) occurred during deformation at 900 °C. The results also suggested that deformation mechanism under low temperature (~500°C) was twinning. The hot deformation activation energy (Q) of the Fe₈₃Ga₁₇ with 1.0 at.%B alloy was calculated to be 295.3 kJ/mol.

• Periodical: Materials Science Forum (Volume 687)
• Pages: 467-473
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.687.467
• Online since: June 2011
• Authors: Ji Heng Li, Xue Xu Gao, Jie Zhu, Xiaoqian Bao, Mao Cai Zhang
• Keywords: Compression, Deformation Mechanism, Dynamic Recovery, Dynamic Recrystallization (DRX), Fe-Ga Alloy

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