Al-Ce合金对铝脱氧钛微合金钢中夹杂物的影响

doi:10.13228/j.boyuan.issn0449-749x.20220551

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Abstract To investigate the effects of different Al-Ce alloys on cerium-containing and titanium-containing inclusions in titanium microalloyed steel, the size, quantity, morphology, and type of inclusions in steel were analyzed using a scanning electron microscope, energy dispersive spectroscope, and OTS inclusion automatic analysis system. The Equilib and Phase Diagram modules in FactSage 8.1 thermodynamic software were used to calculate the precipitation of inclusions in steel at different temperatures. The thermodynamic calculation results show that CeAlO₃is mainly formed in molten steel, while Ce₂S₃ and Ce₂O₂S are precipitated during the solidification of molten steel. When the mass percent of cerium is 0.005%, with the mass percent of sulfur increasing from 0.000 8% to 0.003 3%, the type of rare earth inclusions will gradually change from CeAlO₃, Ce₂S₃, and Ce₂O₂S to single Ce₂S₃. The experimental results show that when Al-Ce alloys (w(Ce)∶w(Al)=4.5∶1, 8.5∶1, and 11.5∶1) are added to the steel successively, the content of sulfur will gradually decrease, the typical cerium-containing inclusions in steel are Ce₂S₃, Ce-Al-O-S and Ce₂O₂S-CeAlO₃, the morphology is mainly ellipsoidal and spherical, and the average size of rare-earth inclusions increases from 3 μm to 5.5 μm, the size of Al₂O₃ and Ti(C, N) in steel with rare earth alloys is reduced compared with the steel without rare earth alloys. The possibility of CeN transition between Ce-Al-O-S inclusions and TiN is verified based on the two-dimensional mismatch degree model and the surface scanning results of Ce-Al-O-S-Ti(C, N) inclusions. In the steel smelted with the alloy of w(Ce)∶w(Al)=11.5∶1, CeAlO₃ precipitates in the form of dendrites on the surface of Ce₂O₂S. The edge-to-edge matching model proves that Ce₂O₂S can become the nucleation core of CeAlO₃, and there are four possible orientation relationships between Ce₂O₂S and CeAlO₃. Individual Ti(C, N) in steel has two growth models,continuous growth and two-dimensional nucleation, when Ti(C, N) nucleates and grows on the surface of different rare earth inclusions for a certain period, its final growth characteristics are the same, it takes rare earth inclusions as the heterogeneous nucleation core, and grows in a cubic structure along its surface in all directions.

Key words： thermodynamic calculation edge-to-edge matching model continuous growth two-dimensional nucleus heterogeneous nucleation

Received: 30 August 2022

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	HE Fei-hu
	PENG Jun
	ZHANG Fang
	CHANG Hong-tao

Cite this article:

HE Fei-hu,PENG Jun,ZHANG Fang等. Effect of Al-Ce alloy on inclusions in Al deoxidization titanium microalloyed steel[J]. Iron and Steel, 2023, 58(3): 61-72.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20220551 OR http://www.chinamet.cn/Jweb_gt/EN/Y2023/V58/I3/61

[1] 宋扬,刘丽华,张中武. 钛微合金化低碳钢的研究进展[J]. 材料导报,2021,35(15):15175.(SONG Yang,LIU Li-hua,ZHANG Zhong-wu. Research progress on the titanium microalloyed low carbon steels[J]. Materials Reports,2021,35(15):15175.)
[2] Kadgaye C,Hasan S M,Patra S,et al. Role of cerium on transformation kinetics and mechanical properties of low carbon steels[J]. Metallurgical and Materials Transactions A, 2021,52(9):3978.
[3] Zhang Y,Miyamoto G,Shinbo K,et al. Comparative study of VC,NbC,and TiC interphase precipitation in microalloyed low-carbon steels[J]. Metallurgical and Materials Transactions A,2020,51(12):6149.
[4] 陈胜迁,龙骏,邓超,等. Al含量对Fe-Cr耐磨合金钢组织与性能的影响[J]. 铸造,2018,67(8):673.(CHENG Sheng-qian,LONG Jun,DENG Chao,et al. Effects of Al content on microstructure and properties of Fe-Cr wear-resisting alloy steels[J]. Foundry,2018,67(8):673.)
[5] 谢胜涛,邵书东,亓海燕,等. 稀土元素对430铁素体不锈钢组织和性能的影响[J]. 中国冶金,2022,32(6):94.(XIE Sheng-tao,SHAO Shu-dong,QI Hai-yan,et al. Effect of rare earth elements on microstructure and properties of 430 ferritic stainless steel[J]. China Metallurgy,2022,32(6):94.)
[6] 马帅,李阳,姜周华,等. Ce对440C不锈轴承钢夹杂物演变的影响[J]. 中国冶金,2022,32(6):71.(MA Shuai,LI Yang,JIANG Zhou-hua,et al. Effect of Ce on inclusion evolution for 440C stainless bearing steel[J]. China Metallurgy,2022,32(6):71.)
[7] LIANG Wei,LI Jing,LU Bin,et al. Analysis on clogging of submerged entry nozzle in continuous casting of high strength steel with rare earth[J]. Journal of Iron and Steel Research International,2022,29(1):34.
[8] YU Yan-chong,CHEN Wei-qing,ZHENG Hong-guang. Effects of Ti-Ce refiners on solidification structure and hot ductility of Fe-36Ni invar alloy[J]. Journal of Rare Earths,2013,31(9):927.
[9] Shibata H,Ukai S,Oono N H,et al. Development of accident-tolerant FeCrAl steels containing Al₂O₃ particles by means of internal Al oxidation[J]. Metallurgical and Materials Transactions A,2019,50(4):1816.
[10] LI Hao,YU Yan-chong,REN Xiang,et al. Evolution of Al₂O₃ inclusions by cerium treatment in low carbon high manganese steel[J]. Journal of Iron and Steel Research International,2017,24(9):925.
[11] WANG Hao,BAO Yan-ping,DUAN Cheng-yi,et al. Effect of rare earth Ce on deep stamping properties of high-strength interstitial-free steel containing phosphorus[J]. Materials,2020,13(6):1473.
[12] 赵晓栋,姜江,李国宝,等. 钢中大尺寸稀土夹杂物的形成动力学研究[J]. 中国稀土学报,2004,22(1):142.(ZHAO Xiao-dong,JIANG Jiang,LI Guo-bao,et al. Kinetics of formation of large rare earth inclusion in steels[J]. Journal of The Chinese Rare Earth Society,2004,22(1):142.)
[13] 孙萌,姜周华,李阳,等. Ce-Mg复合处理对含硫齿轮钢SCr420H洁净度的影响[J]. 钢铁,2021,56(7):47.(SUN Meng,JIANG Zhou-hua,LI Yang,et al. Effect of Ce-Mg treatment on cleanliness of resulfurized gear steel SCr420H[J]. Iron and Steel,2021,56(7):47.)
[14] 王礼超,田家龙,任吉,等. Ce/Mg处理对M50轴承钢洁净度的影响[J].工程科学学报,2022,44(9):1507.(WANG Li-chao,TIAN Jia-long,REN Ji,et al. Effect of Ce/Mg addition on the cleanliness of M50-bearing steel[J]. Chinese Journal of Engineering,2022,44(9):1507.)
[15] QIAO X Y,HAN X,HE Z J,et al. Effect of cerium addition on microstructure and mechanical properties of as-cast high grade knives steel[J]. Journal of Iron and Steel Research,International,2022,29(1):1.
[16] BIN W,SONG B,PAN N,et al. Influence of Ce on characteristics of inclusions and microstructure of pure iron[J]. Journal of Iron and Steel Research,International,2011,18(2):38.
[17] Diederichs R,Bleck W. Modelling of manganese sulphide formation during solidification,Part I:Description of MnS Formation Parameters[J]. Steel Research International,2006,77(3):202.
[18] Clyne T W,Kurz W. Solute redistribution during solidification with rapid solid state diffusion[J]. Metallurgical Transactions A,1981,12(6):965.
[19] WANG Ye-guang,LIU Cheng-jun,Agglomeration characteristics of various inclusions in Al-killed molten steel containing rare earth element[J]. Metallurgical and Materials Transactions B, 2020, 51(6):1.
[20] Bramfitt B L. The effect of carbide and nitride additions on the heterogeneous nucleation behavior of liquid iron[J]. Metallurgical Transactions,1970,1(7):1987.
[21] Sunagawa I.Morphology of Crystals,Part B[M]. Tokyo:Terra Scientific Publishing,1987.
[22] LI H,YU Y C,REN X,et al. Evolution of Al₂O₃ inclusions by cerium treatment in low carbon high manganese steel[J]. Journal of Iron and Steel Research,International,2017,24(9):925.
[23] WANG M,CUI H,WEI N,et al. A new design of in situ Ti(C,N) reinforced composite coatings and their microstructures, interfaces, and wear resistances[J]. ACS Applied Materials and Interfaces,2018,10(5):4250.
[24] 王林珠. 铝脱氧钢中非金属夹杂物细微弥散化的基础研究[D]. 北京:北京科技大学,2017.(WANG Lin-zhu. Study on the Refinement and Homogenized Distribution of Inclusions in Al Killed Steel[D]. Beijing:University of Science and Technology Beijing,2017.)
[25] Xiao R F,Alexander J I,Rosenberger F. Growth morphology with anisotropic surface kinetics[J]. Journal of Crystal Growth,1990,100(3):313.
[26] Chernov A A. Stability of faceted shapes[J]. Journal of Crystal Growth,1974,24:11.
[27] Burton W K,Frank N. The growth of crystals and the equilibrium structure of their surfaces[J]. Philosophical Transactions of the Royal Society of London,1951,243(866):299.