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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 13    No. 4    August 2003

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Fracture behavior of DO3-ordered Fe-Al alloy with V addition
LOU Bai-yang(楼白杨), LU Cong-da(鲁聪达),
JIN Jie(金 杰), YANG Ji-long(杨继隆)

College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China

Abstract:The fracture behaviors of DO3-ordered Fe-28Al alloys with or without V addition were studied. The results show that addition of element V into Fe-Al alloy can improve the mechanical properties of the alloy. Contrasted with transgranular fracture of Fe3Al alloy at room temperature, the Fe3Al containing V has intergranular and transgranular cleavage mixed fracture mode. The theoretical calculation conforms that V addition could increase cleavage strength of Fe3Al alloy from 98.4057kJ/mol to 173.1445kJ/mol in 〈111〉 direction and from 29.6604kJ/mol to 47.6730kJ/mol in 〈100〉 direction.

 

Key words: fracture; cleavage strength; DO3-ordered Fe-Al alloy; vanadium

ISSN 1672-7029
CN 43-1423/U

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