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TECHNICAL PAPERS

Experimentally Based Study on the Effect of Initial Grain Size for Characterization of the Grain Coarsening Phenomenon During Hot Rolling of a Medium Carbon Steel

[+] Author and Article Information
Yutaka Neishi, Kouichi Kuroda

Bar & Wire Processing Development Section, Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd., 1, Konomimachi, Kokurakita-ku, Kitakyusyu-city, Fukuoka, 802-8686, Japan

Masayoshi Akiyama

Corporate Research and Development Laboratories, Sumitomo Metal Industries, Ltd., 1-8, Fuso-cho, Amagasaki-city, Hyogo, 660-0891, Japan

J. Manuf. Sci. Eng 122(1), 109-116 (Jun 01, 1999) (8 pages) doi:10.1115/1.538912 History: Received September 01, 1998; Revised June 01, 1999
Copyright © 2000 by ASME
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References

Figures

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Illustrated example of mill layout for bar rolling
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Distribution of grain size in the mother bar
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Photograph of the hot deformation simulator
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Example of calculated distribution of equivalent plastic strain after the compression test
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Effects of temperature, equivalent plastic strain, and holding time on the grain size after cooling
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Illustration of experimental stages to simulate the grain coarsening phenomenon for various initial grain size
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Comparisons of deformed microstructures
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Effect of temperature, equivalent plastic strain and initial grain size number on the grain coarsening phenomenon. Initial grain size number: (a) 3.5, (b) 6.0, (c) 7.5.
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Three-dimensional illustration of the effect of temperature and equivalent plastic strain on the grain coarsening phenomenon at 1123 K. Initial grain size number: (a) 3.5, (b) 6.0, (c) 7.5.
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The change in the grain size number on the equivalent plastic strain at 1173 K
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Illustrated layout of a prototype mill
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Example of finite-element analyses by “CORMILL”
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Effect of initial grain size on the grain coarsening phenomenon after finishing rolling

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