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Effect of Trace Doping Ce Element on Microstructure, Texture and Magnetostrictive Behavior of Polycrystalline Fe81Al19 Alloys
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Hongbo Hao1, 2, Zhenghua He1, 3, Weijie Li1, 3, Enshen Yang1, 3, Lei Zhou1, 3, Jiande Liu1, 3, Haoyu Zhang1, 3, Ge Zhou1, 3, Yuhui Sha4, Lijia Chen1, 3
Rare Metal Materials and Engineering | 2026, 55(7) : 1748 - 1757
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Rare Metal Materials and Engineering | 2026, 55(7): 1748-1757
Effect of Trace Doping Ce Element on Microstructure, Texture and Magnetostrictive Behavior of Polycrystalline Fe81Al19 Alloys
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Hongbo Hao1, 2, Zhenghua He1, 3, Weijie Li1, 3, Enshen Yang1, 3, Lei Zhou1, 3, Jiande Liu1, 3, Haoyu Zhang1, 3, Ge Zhou1, 3, Yuhui Sha4, Lijia Chen1, 3
Affiliations
  • 1.School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
  • 2.State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
  • 3.Shenyang Key Laboratory of Advanced Structural Materials and Applications, Shenyang University of Technology, Shenyang 110870, China
  • 4.Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China
Published: 2026-07-10 doi: 10.12442/j.issn.1002-185X.20250049
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Fe-Al alloys exhibit excellent mechanical properties, low cost, and moderate magnetostriction, making it a promising magnetostrictive material. The polycrystalline (Fe81Al19)100-xCex (x=0, 0.05, 0.10, 0.20, 0.30, 0.40, at%) alloys were prepared by arc melting. The effect of trace doping rare earth elements Ce on the microstructure, texture, and magnetostrictive behavior of Fe81Al19 alloys was investigated. Results show that the trace doping of the Ce element transforms the equiaxed crystals into columnar crystals, thus significantly improving the volume fraction of favorable η texture. The columnar crystal characteristics gradually weaken with the increase in Ce content, leading to weakening of η texture and an increase in the volume fraction of α and γ texture. With the increase in Ce content, a large amount of Ce-rich phases form at grain boundaries and within the grains. Among them, the phases at grain boundaries are mainly composed of Ce-Al-rich phases, while the phases within the grains is a composite secondary phase of Ce-Al wrapped around the Fe-Ce-rich phase. The magnetostriction of Fe81Al19 alloy is significantly enhanced by trace doping of Ce element. The peak magnetostriction of 153 ppm is obtained at the Ce element of 0.05at%, with an enhancement of 89% compared to the magnetostriction of a binary alloy. This improvement in magnetostriction is attributed to more columnar crystals containing ηtextures and the formation of more nanoheterogeneous phases owing to solid solution of trace Ce element.

Fe-Al alloy  /  magnetostriction  /  rare earth elements doping  /  texture
Hongbo Hao, Zhenghua He, Weijie Li, Enshen Yang, Lei Zhou, Jiande Liu, Haoyu Zhang, Ge Zhou, Yuhui Sha, Lijia Chen. Effect of Trace Doping Ce Element on Microstructure, Texture and Magnetostrictive Behavior of Polycrystalline Fe81Al19 Alloys[J]. Rare Metal Materials and Engineering, 2026 , 55 (7) : 1748 -1757 . DOI: 10.12442/j.issn.1002-185X.20250049
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Year 2026 volume 55 Issue 7
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Article Info
doi: 10.12442/j.issn.1002-185X.20250049
  • Receive Date：2025-07-03
  • Online Date：2026-07-29
  • Published：2026-07-10
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  • Received：2025-07-03
Funding
Affiliations
    1.School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
    2.State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China
    3.Shenyang Key Laboratory of Advanced Structural Materials and Applications, Shenyang University of Technology, Shenyang 110870, China
    4.Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China

Corresponding:

He Zhenghua, Ph. D., Associate Professor, School of Materials Science and Engineering, Shenyang University of Technology, Shenyang 110870, P. R. China, Tel: 0086-24-25496301, E-mail:
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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