2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 1: D'Abreu Intl. Symp. / Iron and Steel Making

Editors:Kongoli F, Noldin JH, Takano C, Lins F, Gomez Marroquin MC, Contrucci M
Publisher:Flogen Star OUTREACH
Publication Year:2016
Pages:320 pages
ISBN:978-1-987820-37-9
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
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    Study on equiaxed crystallization behavior in solidification of 40Cr steel strand

    Changgui Cheng1; Yang Li2; Ying Chen3; Sheng Huang3; Yan Jin3;
    1, wuhan, China; 2WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, Wuhan, China; 3THE STATE KEY LABORATORY OF REFRACTORIES AND METALLURGY, WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, Wuhan, China;
    Type of Paper: Regular
    Id Paper: 175
    Topic: 2

    Abstract:

    By using the method of the thermal simulation experiments and energy spectrum analysis, this paper has studied the influence of the cooling rates and the initial temperature of liquid steel on full equiaxed crystallization behavior in solidification of 40Cr steel strand. The results show that the full equiaxed grain can be gained when the proper cooling rate was adopted, when the cooling rate in the surface of corundum crucible is increased from 3.83 oC/min to 8.6 oC/min, the average grain size of solidification structure is decreased from 8.76 mm2 to 2.01 mm2, and the distribution of chromium elements in the half height cross-section of specimen is uniform, the maximum difference of microsegregation rate is decreased from 0.274to 0.181. With the initial temperature of liquid steel increasing, the average grain size of 40Cr steel increases, when the initial temperature of liquid steel is increased from 1496íŠ to 1508íŠ, the average grain size of solidification structure is increased from 2.01 mm2 to 5.10 mm2, the influence of the initial temperature of liquid steel on the microsegregation of chromium is not significant. These results may provide some experimental basis for the analysis of the solidification behavior and influence factors in the central region of the continuous casting for chromium steel.

    Keywords:

    Caster; Steel;

    References:

    [1] Cheng Changgui, Wan Wencheng, Liu Zhongtian. Study on Formation Mechanism of Frame-Shaped Segregation in 40Cr Wire Rod Rolled from Bloom. Advanced Materials Research, 402(2012), 111-115.
    [2] Yang Wei, Chen Shouhui, Zhang Shouyin. Effect of Cooling Rate onNon-equilibrium Solidified Microstructure of AZ91D Magnesium Alloy, The Chinese Journal of Nonferrous Metals, 24(2014), 593-599
    [3] Chen Zhongwei, Wang Xiaoying , Zhang Ruijie. Effect of Cooling Rate on Microstructures of A357 Alloy During Solidification, Foundry, 53(2004), 183-186
    [4] Cheng Changgui, Qi Shibin, Chen Xiong. Sturdy on Solidification and Heat Transfer Behavior of 40Cr Steel Bloom, Journal of Wuhan University of Science and Technology, 36(2013), 55-59
    [5] An Hanghang, Han Chuanji, Han Lina. Solidification Characteristics and Slab Quality of 40Cr of Bloom Caster, Continuous Casting, 1(2013), 36-40
    [6] Chen Jin, Su ZhiJian, Keiji NAKAJIMA. Low Alloy Steel Columnar to Equiaxed Transition(CET) Criterion under Electromagnetic Stirring II, Foundry Technology, 31(2010), 603-606

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    Cite this article as:

    Cheng C, Li Y, Chen Y, Huang S, Jin Y. Study on equiaxed crystallization behavior in solidification of 40Cr steel strand. In: Kongoli F, Noldin JH, Takano C, Lins F, Gomez Marroquin MC, Contrucci M, editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 1: D'Abreu Intl. Symp. / Iron and Steel Making. Volume 1. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 266-275.