电渣重熔GH984G定向凝固组织CAFE法模拟

doi:10.13228/j.boyuan.issn0449-749x.20200421

Abstract
Figure/Table
References (33)
Related Citation (15)

Download: PDF (4270 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The control of electroslag remelting solidification structure is directly related to the quality of superalloys and actual production applications. Aiming at the directional solidification process of electroslag remelting GH984G, considering heat transfer and solute diffusion, based on the combination of CAFE method and C language, a three-dimensional microstructure evolution model of the electroslag remelting solidification process is established, and the temperature field and solidification structure evolution are simulated and predicted. The results show that, the ingot temperature field and bath depth are shallow and flat at first, then deepen until finally stable. At the beginning of electrode melting, the molten pool is shallow and the growth direction of the dendrite is vertical upward, and then the molten pool deepens continuously, and the vertical upward columnar crystal direction at the bottom becomes about 26 ° oblique upward. At the same time, equiaxed crystals appear on the centerline of the ingot, and the equiaxed crystals grow with columnar crystals after nucleation and growth. Besides, with the increase of the electrode melting rate, the rising speed of the slag metal interface increases, and the depth bath becomes wider and deeper. The simulation results are consistent with the experimental results, which verifies the applicability of the model and nucleation parameters.

Key words： electroslag remelting superalloy GH984G microstructure CAFE

Received: 14 August 2020

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	AN Rui-dong
	LIU Fu-bin
	CHEN Kui
	GAO Jun-zhe
	KANG Cong-peng
	JIANG Zhou-hua

Cite this article:

AN Rui-dong,LIU Fu-bin,CHEN Kui等. CAFE simulation of electroslag remelting GH984G directional solidification structure[J]. Iron and Steel, 2021, 56(5): 56-64.

URL:

http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20200421 OR http://www.chinamet.cn/Jweb_gt/EN/Y2021/V56/I5/56

[1] 陈明秋,李宝宽,赵林.利用元胞自动机法模拟电渣重熔钢锭定向凝固组织[J].材料与冶金学报,2011,10(s1):139.(CHEN Ming-qiu, LI Bao-kuan, ZHAO Lin. The cellular automata model of electroslag remelting ingot structure[J].Journal of Materials and Metallurgy,2011,10(s1):139.)
[2] 李正邦. 电渣冶金原理及应用[M].北京:冶金工业出版社,1996.
(LI Zheng-bang.Principle and Application of Electroslag Metallurgy[M]. Beijing: Metallurgical Industry Press, 1996.)
[3] 高楚寒,葛思楠,李万明,等. 高速钢碳化物偏析的研究现状[J]. 中国冶金, 2019, 29(5): 1.(GAO Chu-han,GE Si-nan,LI Wan-ming,et al. Research status of carbide segregation in high-speed steel[J]. China Metallurgy, 2019, 29(5): 1.)
[4] 宛刚.中国钢铁工业绿色发展工程科技战略及对策[J].化工管理,2018(27):108.(WAN Gang. Science and technology strategy and countermeasures for green development engineering of China's iron and steel industry[J]. Chemical Management, 2018(27): 108.)
[5] 张春霞,王海风,张寿荣,等.中国钢铁工业绿色发展工程科技战略及对策[J].钢铁,2015,50(10):1.(ZHANG Chun-xia, WANG Hai-feng, ZHANG Shou-rong,et al. Strategic study on green development of Chinese steel industry[J]. Iron and Steel, 2015, 50(10):1.)
[6] 刘状. 均匀化态和热轧态GH984G合金热变形行为及再结晶机理的研究[D].昆明:昆明理工大学,2019.
(LIU Zhuang.Effect of Alloy Initial State on Hot Deformation and Dynamic Recrystallization for GH984G Alloy[D]. Kunming: Kunming University of Science and Technology, 2019.)
[7] 邓鑫, 崔阳. T型结晶器电渣重熔复合轧辊渣池热电场的数值模拟[J]. 中国冶金, 2020, 30(11): 35.(DENG Xin, CUI Yang. Numerical simulation of thermoelectricity field in slag pool of electroslag remelting composite roll with T-mold[J]. China Metallurgy, 2020, 30(11): 35.)
[8] 杨燕,杨光昱,罗时峰, 等.Mg-14.61Gd合金的定向凝固组织及生长取向[J].金属学报,2019,55(2):202.(YANG Yan, YANG Guang-yu, LUO Shi-feng, et al. Microstructures and growth orientation of directionally solidification Mg-14.61Gd alloy[J].Acta Metallurgica Sinica,2019,55(2):202.)
[9] LAN P, TANG H, ZHANG J.Solidification microstructure, segregation, and shrinkage of Fe-Mn-C twinning-induced plasticity steel by simulation and experiment[J]. Metallurgical and Materials Transactions A, 2016, 47(6): 1.
[10] HOU Z, JIANG F, CHENG G.Solidification structure and compactness degree of central equiaxed grain zone in continuous casting billet using cellular automaton-finite element method[J]. ISIJ International, 2012, 52(7): 1301.
[11] PANG R, WANG F, ZHANG G, et al.Study of solidification thermal parameter of 430 ferrite stainless steel based on 3D-CAFE method[J]. Acta Metallurgica Sinica-Chinese Edition, 2013, 49(10):1234.
[12] LUO Y Z, ZHANG J M, WEI X D, et al.Numerical simulation of solidification structure of high carbon SWRH77B billet based on the CAFE method[J]. Ironmaking and Steelmaking, 2012, 39(1): 26.
[13] JING C, WANG X, JIANG M.Study on solidification structure of wheel steel round billet using FE-CA coupling model[J]. Steel Research International, 2011,82(10): 1173.
[14] 王金龙,王福明,李长荣,等. 易切削钢9SMn28凝固过程的CAFE法模拟[J].北京科技大学学报,2010,32(3):325.(WANG Jin-long, WANG Fu-ming, LI Chang-rong, et al. CAFE simulation of the solidification process of free cutting steel 9SMn28[J].Journal of University of Science and Technology Beijing,2010,32(3):325.)
[15] 康秀红,杜强,李殿中, 等.用元胞自动机与宏观传输模型耦合方法模拟凝固组织[J].金属学报,2004,40(5):452.(KANG Xiu-hong, DU Qiang, LI Dian-zhong, et al. Coupling method of cellular automaton and macroscopic transmission model to simulate solidification structure[J].Acta Metallurgica Sinica,2004,40(5):452.)
[16] LI B, WANG Q, WANG F, et al.A coupled cellular automaton-finite-element mathematical model for the multiscale phenomena of electroslag remelting H13 die steel ingot[J]. JOM, 2014, 66: 1153.
[17] 兰鹏,张家泉. 大钢锭凝固界面换热系数的数值模拟[J]. 钢铁研究学报, 2014, 26(8): 29.(LAN Peng, ZHANG Jia-quan. Numerical simulation of heat transfer coefficient of solidification interface of large steel ingot[J]. Journal of Iron and Steel Research, 2014, 26(8): 29.)
[18] ZHU H, JIANG Z, LI H, et al.Effect of solidification pressure on compactness degree of 19Cr14Mn0.9 N high nitrogen steel using CAFE method[J]. Steel Research International, 2017: 88(7): 1600509.
[19] 朱红春,姜周华,李花兵,等. 加压技术在高品质特殊钢冶炼和凝固中的作用[J]. 钢铁, 2015, 50(11): 37.(ZHU Hong-chun, JIANG Zhou-hua, LI Hua-bing, et al. Effect of pressurization technology on steel-making and solidification of high-grade special steels[J]. Iron and Steel, 2015, 50(11): 37.)
[20] 崔家骏,李宝宽,牛冉,等. Pb-Sn合金定向凝固斑点偏析的数值模拟[J].铸造,2019,68(3):244.(CUI Jia-jun, LI Bao-kuan, NIU Ran, et al. Numerical simulation of freckle formation during directional solidification of Pb-Sn alloy[J]. Foundry,2019,68(3):244.)
[21] HAN Z.Numerical simulation on channel segregation in vertically unidirectional solidification process[J]. Acta Metallrugica Sinica,2003,39(2):315.
[22] 李星,耿鑫,姜周华,等.电渣重熔高温合金渣系对冶金质量的影响[J].钢铁,2015,50(9):41.(LI Xing, GENG Xin, JIANG Zhou-hua, et al. Influences of slag system on metallurgical quality for high temperature alloy by electroslag remelting[J]. Iron and Steel, 2015,50(9):41.)
[23] 赵俊学,卢亮,赵忠宇,等. 电渣重熔用五元高氟渣高温挥发机制[J]. 钢铁, 2019, 54(6): 43.(ZHAO Jun-xue,LU Liang,ZHAO Zhong-yu,et al. Volatilization mechanism of ESR slag with high fluoride under high-temperature[J]. Iron and Steel, 2019, 54(6): 43.)
[24] 林杰,杨成,王远明,等. 电渣重熔中的脱氧热力学[J]. 钢铁, 2019, 54(9): 44.(LIN Jie, YANG Cheng, WANG Yuan-ming, et al. Deoxidation thermodynamics in electroslag remelting process[J]. Iron and Steel, 2019, 54(9): 44.)
[25] 饶磊,李小龙,耿茂鹏,等.电渣熔铸过程中铸锭微观晶粒生长模拟研究[J].铸造,2010,59(6):594.(RAO Lei, LI Xiao-long, GENG Mao-peng, et al. Simulation on grain growth of ingot during electroslag remelting casting process[J]. Foundry,2010,59(6):594.)
[26] Rappaz M, Gandin Ch-A.Probabilistic modelling of microstructure formation in solidification processes[J].Acta Mater, 1993,41(2):345.
[27] 陈奎. 加压浇注条件下钢锭凝固组织的数学模拟[D].沈阳:东北大学,2017.
(CHEN Kui.Numerical Simulation of Ingot Solidification Structure Cast under Pressurized Atmosphere[D].Shenyang: Northeastern University,2017.)
[28] Martorano M A, Beckermann C, Gandin C A.A solutalinterac-tion mechanism for the columnar-to-equiaxed transition in alloy solidification[J]. Acta Mater, 2003, 34(8): 1657.
[29] 陈旭. 电渣重熔空心钢锭过程的数学模拟和试验研究[D].沈阳:东北大学,2016.
(CHEN Xu.Mathematical Simulation and Experimental Research on Electroslag Remelting Process of Hollow Ingo[D]. Shenyang:Northeast University, 2016.)
[30] 尧军平,张磊,李海敏.电渣熔铸钢锭微观组织的模拟研究[J].铸造技术,2008,29(12):1670.
(YAO Jun-ping, ZHANG Lei, LI Hai-min.Simulation on the microstructure of electroslag remelting ingot[J]. Foundry Technology, 2008,29(12):1670.)
[31] CHEN X, JIANG Z, LIU F, et al.Effect of melt rate on surface quality and solidification structure of Mn18Cr18N hollow ingot during electroslag remelting process[J]. Steel Research International, 2017,(2):1600186.
[32] 周晓龙,张浩,樊勇军,等.Cr20 Ni80电热合金电渣重熔微观组织研究[J].材料热处理学报,2015,36(z2):256.(ZHOU Xiao-long, ZHANG Hao, FAN Yong-jun, et al. Microstructure of Cr20 Ni80 electrothermal alloy in the electroslag remelting[J].Journal of Materials Heat Treatment,2015,36(z2):256.)
[33] 张璞,侯华,赵宇宏,等. 基于CAFE 模型的镍基合金定向凝固过程显微组织模拟[J]. 中国有色金属学报,2016,26(4):782.(ZHANG Pu, HOU Hua, ZHAO Yu-hong, et al. Microstructure simulation during directional solidification of nickel-based alloy based on CAFE model[J]. Chinese Journal of Nonferrous Metals, 2016, 26(4): 782.)