Research Papers

Experimental Study of High Temperature Hydrozing Annealing 1J50 Alloy's Magnetic Properties

[+] Author and Article Information
Yingtao Zhang

The State Key Laboratory
of Mechanical Transmission,
Department of Mechanical Engineering,
Chongqing University,
Chongqing 400044, China
e-mail: YingtZhang@foxmail.com

Gang Wang

Associate Professor
Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipments and Control,
Department of Mechanical Engineering,
Tsinghua University,
Beijing 100084, China
e-mail: gwang@mail.tsinghua.edu.cn

Zhenguo Nie

Student of Tsinghua University

Wankai Shi

e-mail: wankai_shi@cqu.edu.cn
The State Key Laboratory
of Mechanical Transmission,
Department of Mechanical Engineering,
Chongqing University,
Chongqing 400044, China

Yiming Rong

Department of Mechanical Engineering,
Worcester Polytechnic Institute,
Worcester, MA 01609
e-mail: rong@wpi.edu

Manuscript received May 1, 2013; final manuscript received October 19, 2013; published online November 27, 2013. Assoc. Editor: Yung Shin.

J. Manuf. Sci. Eng 135(6), 061024 (Nov 27, 2013) (5 pages) Paper No: MANU-13-1197; doi: 10.1115/1.4025806 History: Received May 01, 2013; Revised October 19, 2013

The good DC magnetic properties can be achieved for 1J50 soft magnetic alloy by applying high temperature hydrogen annealing. Annealing process parameters, e.g., atmosphere, soaking temperature, and time, are critical to soft magnetic properties. Qualitative results had been done for years. However a quantitative research among process parameters, microstructure, and magnetic properties can be more comprehensive and specific. In this study, a serial of experiments for 1J50 samples under the Chinese national standards. The influence of annealing temperature and socking time on DC magnetic properties and microstructure of the samples has been investigated on DC magnetic properties and microstructure of samples. The result shows that annealing process parameters have a nonlinear effect on the development of material microstructure and magnetic properties. Furthermore, the models among magnetic property, grain size, and process parameters have been built to quantitatively describe the interrelationship in between.

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Grahic Jump Location
Fig. 2

Technological curve of annealing in hydrogen atmosphere

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Fig. 8

Relationship between average grain size and annealing process (a) with respect to time (b) with respect to temperature

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Fig. 7

The relationship between D and Hc

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Fig. 6

The relationship between Hc and μm

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Fig. 5

Optical micrographs of original (a) and after annealing at 1100 °C for 3 h (b), 1100 °C for 6 h (c), 1150 °C for 3 h (d), 1100 °C for 6 h (e)

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Fig. 4

The effects of annealing on coercive force

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Fig. 3

The effects of annealing on maximum magnetic permeability (a) with respect to time (b) with respect to temperature



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