Asynchronous responses of mechanical and magnetic properties to structure relaxation for FeNbB bulk metallic glass

Zhikai Gao; Wang Anding; Pingbo Chen; Chengliang Zhao; Fushan Li; Aina He; ChuntaoChang; XinminWang

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钢铁研究学报（英文版） ›› 2018, Vol. 25 ›› Issue (6) : 637-643.

Asynchronous responses of mechanical and magnetic properties to structure relaxation for FeNbB bulk metallic glass

Zhi-kai Gao^1,2 . An-ding Wang²,³,⁴ . Ping-bo Chen² . Cheng-liang Zhao²,³ . Fu-shan Li¹ . Ai-na He²,³ . Chun-tao Chang²,³ . Xin-min Wang²,³ . Chain-tsuan Liu⁴

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Asynchronous responses of mechanical and magnetic properties to structure relaxation for FeNbB bulk metallic glass

Zhi-kai Gao^1,2 . An-ding Wang²,³,⁴ . Ping-bo Chen² . Cheng-liang Zhao²,³ . Fu-shan Li¹ . Ai-na He²,³ . Chun-tao Chang²,³ . Xin-min Wang²,³ . Chain-tsuan Liu⁴

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摘要

Abstract: Asynchronous responses of mechanical and magnetic properties to structure relaxation for the Fe71Nb6B23 bulk metallic glass were systematically investigated. It is interesting that this ternary alloy can combinedly exhibit outstanding magnetic and mechanical properties, especially good ductility, after optimally annealing in structure relaxation stage for eliminating the internal stress and homogenizing the microstructure. The alloy exhibits low coercive force of 1.6 A/m, high effective permeability of 15 9 103, high fracture strength of 4.2 GPa and good plastic strain of 1.8%. It is also found that responses of mechanical and magnetic properties to structure relaxation are asynchronous. The glass transition and crystallization will greatly deteriorate the magnetic and mechanical properties. Here we propose a physical picture and demonstrate that the primary structure factors determining magnetic and mechanical properties are different. This work will bring a promising material for application and a new perspective to study the effect of annealing-induced structure relaxation on mechanical and magnetic properties.

Abstract

关键词

Bulk metallic glass, Annealing, Mechanical property, Magnetic property, Structure relaxation

Key words

Bulk metallic glass, Annealing, Mechanical property, Magnetic property, Structure relaxation

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Zhikai Gao, Wang Anding, Pingbo Chen, 等. Asynchronous responses of mechanical and magnetic properties to structure relaxation for FeNbB bulk metallic glass[J]. 钢铁研究学报（英文版）, 2018, 25(6): 637-643

ZHIKAI -Gao, ANDING -Wang, PINGBO -chen, et al. Asynchronous responses of mechanical and magnetic properties to structure relaxation for FeNbB bulk metallic glass[J]. Journal of Iron and Steel Research International, 2018, 25(6): 637-643

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基金

The National Key Research and Development Program of China;the National Natural Science Foundation of China; Ningbo International Cooperation Projects