Abstract：In order to solve the problems of developed dendrite structure,uneven distribution of carbide network and eutectic carbides in high-speed tool steel on natural cooling conditions. The Center for Advanced Solidification Technology of Shanghai University used a unique dual-power vacuum induction melting device,applying Pulse Magneto-oscillation (PMO) for external field intervention during the natural solidification of high-speed steel. The results show that with PMO treatment,the developed dendrites in the as-cast microstructure of high-speed steel are transformed into equiaxed grains. PMO technology can effectively optimize the as-cast microstructure and morphology of high-speed steel,refine the size of carbide network and eutectic carbide,and improve the uniformity of carbide distribution. PMO has a significant refinement effect on the size of the eutectic carbide network intersection of high-speed steel. Taking the refinement of the eutectic carbide network intersection size of M2 high-speed steel as an example,the average size of the carbide intersection at 1/8D,1/4D,and 1/2D (where D is the radial diameter of the casting bille)is reduced by 48.5%,47.1%,and 43.4%,respectively,compared to the ingots without PMO treatment. Meanwhile,PMO can further refine the size of eutectic carbide particles. Taking M2Al high-speed steel as an example,the average size of eutectic carbide particles at 1/8D,1/4D,and 1/2D decreases by 49.1%,54.5%,and 40.2%,respectively. It provides a new idea and method to solve the cracking phenomenon in the process of high-speed steel pressure machining with large deformation and improve its yield. It also provides a new direction for improving the problems encountered during high-speed steel continuous casting,such as the aggregation of carbides in the center and coarse carbides.
刘海宁, 陈杨珉, 陈湘茹, 李莉娟, 翟启杰. PMO对高速钢枝晶组织及碳化物的影响[J]. 钢铁, 2024, 59(2): 119-128.
LIU Haining, CHEN Yangmin, CHEN Xiangru, LI Lijuan, ZHAI Qijie. Effect of PMO on dendritic structure and carbide of high-speed steel[J]. Iron and Steel, 2024, 59(2): 119-128.
[1] 戚正风,任瑞铭. 国内外刀具材料发展现状[J]. 金属热处理,2008,33(1):15. (QI Z F,REN R M. Development of cutting tool materials at home and abroad[J]. Heat Treatment of Metals,2008,33(1):15.) [2] 肖志霞,李海鹏,何继宁,等. 高速钢中共晶碳化物的研究进展[J]. 铸造,2017,66(10):1067. (XIAO Z X,LI H P,HE J N,et al. Research progress of eutectic carbides in high-speed steel[J]. Foundry,2017,66(10):1067.) [3] 吴元昌. 粉末冶金高速钢生产工艺的发展[J]. 粉末冶金工业,2007,17(2):30. (WU Y C. Evolution of technology of powder metallurgy high speed steel[J]. Powder Metallurgy Industry,2007,17(2):30.) [4] 姜周华,李正邦. 电渣冶金技术的最新发展趋势[J]. 特殊钢,2009,30(6):10. (JIANG Z H,LI Z B. The latest development trend of electroslag metallurgy technology[J]. Special Steel,2009,30(6):10.) [5] 赵志刚. 高速工具钢(M2)连铸工艺基础研究[D]. 北京:北京科技大学,2018. (ZHAO Z G. Basic Research on Continuous Casting Process of High-Speed Steel(M2)[D]. Beijing:University of Science and Technology Beijing,2018.) [6] FISCHMEISTER H F,RIEDL R,KARAGOZ S.. Solidification of high-speed tool steels[J]. Metallurgical and Materials Transactions A,1989,20(10):2133. [7] DING P D,SHI G Q,ZHOU S Z. As-cast carbides in high-speed steels[J]. Metallurgical and Materials Transactions A,1993,24(6):1265. [8] DOBRZAN＇SKI L A,ZARYCHTA A,LIGARSKI M. High-speed steels with addition of niobium or titanium[J]. Journal of Materials Processing Technology,1997,63(1/2/3):531. [9] 王启明,成国光,黄宇. M2高速钢大尺寸碳化物的形貌特征及析出机理[J]. 钢铁,2018,53(1):65. (WANG Q M,CHENG G G,HUANG Y. Study on precipitation mechanism of large carbides in M2 high-speed steel[J]. Iron and Steel,2018,53(1):65.) [10] MARIAN M,ALEXANDER S C,ANTON P,et al. The electroslag remelting of high-speed steel using a magnetic field[J]. Transactions of the Iron and Steel Institute of Japan,2007,40(10):980. [11] BURAK B,MUHLIS N S. The effect of slag optical basicity on alloying element losses of steel by electroslag remelting (ESR)[J]. Transactions of the Indian Institute of Metals,2016,69(3):751. [12] JUNGHO M,TAE K H. Characterization of high-speed steel billets fabricated by electro-slag rapid remelting method[J]. Materials Science Forum,2014,804(2):303. [13] 符寒光. 高碳高速钢轧辊制造工艺研究现状及展望[J]. 中国钨业,2002,17(2):37. (FU H G. Current status and prospects of high carbon high-speed steel roll manufacturing technology research[J]. China Tungsten Industry,2002,17(2):37.) [14] 周波. 变质处理铸造高速钢的研究与应用[J]. 大型铸锻件,2003(4):1. (ZHOU B. The research and application of modified of cast high speed steel[J]. Heavy Casting and Forging,2003(4):1.) [15] HASHIMOTO M,KAWAKAMI T,ODA T. Development and application of high-speed tool steel roll in hot strip rolling[J]. Nippon Steel Technical Report,1995(66):82. [16] LI Y J. Influence of Ti on MC carbide in M2 steel[J]. Journal of Materials Science and Technology,1997(6):471. [17] KHEIRANDISH S,KHARRAZI Y,MIRDAMADI S. Mechanical properties of M7 high speed cast steel modified with niobium[J]. ISIJ International,1997,37(7):721. [18] 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 C H,GE S N,LI W M,et al. Research status of carbide segregation in high-speed steel[J]. China Metallurgy,2019,29(5):1.) [19] 宋延沛,王悔改,李丽,等.变质处理对耐磨耐蚀铸铁组织及性能的影响[J]. 钢铁,2019,54(9):106. (SONG Y P,WANG H G,LI L,et al. Effect of modification treatment on microstructure and properties of wear and corrosion resistant cast iron[J]. Iron and steel,2019,54(9):106.) [20] 胡勇,王力华,林鸿泽,等. 5%Si高硅奥氏体不锈钢元素偏析及均匀化处理[J]. 钢铁,2022,57(4):114. (HU Y,WANG L H,LIN H Z,et al. Segregation and homogenization treatment of 5% Si high silicon austenitic stainless steel[J]. Iron and steel,2022,57(4):114.) [21] EDRY I,MORDECHAI T,FRAGE N,et al. Effects of treatment duration and cooling rate on pure aluminum solidification upon pulse magneto-oscillation treatment[J]. Metallurgical and Materials Transactions A,2016,47(3):1261. [22] LIAO X L,ZHAI Q J,LUO J,et al. Refining mechanism of the electric current pulse on the solidification structure of pure aluminum[J]. Acta Materialia,2007,55(9):3103. [23] ZHANG Y H,CHENG X R,ZHONG H G,et al. Comparative study on the grain refinement of Al-Si alloy solidified under the impact of pulsed electric current and travelling magnetic field[J]. Metals,2016,6(7):1. [24] XU Y Y,ZHAO J,YE C Y,et al. Distributions of electro-magnetic fields and forced flow and their relevance to the grain refinement in Al-Si alloy under the application of pulsed magneto-oscillation[J]. Acta Metallurgica Sinica (English Letters),2022,35(2):254. [25] LIAO X L,ZHAI Q J,SONG C J,et al. Effects of electric current pulse on stability of solid/liquid interface of Al-4.5wt.% Cu alloy during directional solidification[J]. Materials Science and Engineering A,2007,466(1/2):56. [26] LIU TY,SUN J,SHENG C,et al. Influence of pulse magneto-oscillation on the efficiency of grain refiner[J]. Advances in Manufacturing,2017,5(2):143. [27] LIU Y,XU G,WANG Y,et al. Effects of pulse magneto-oscillation on GCr15 bearing steel continuous casting billet[J]. Journal of Iron and Steel Research International,2022,29(1):144. [28] SUN J,SHENG C,WANG D,et al. Influence of pulse magneto-oscillation on microstructure and mechanical property of rectangular 65Mn steel ingot[J]. Journal of Iron and Steel Research International,2018,25(8):862. [29] NI J,WU C,ZHONG H,et al. Solidification structure refinement of 2205 duplex stainless steel by pulse magneto-oscillation[C]//TMS 2015 Supplemental Proceedings. Hoboken:The Minerals,Metals and Materials Society,2015:39. [30] LI B,YIN Z X,GONG Y Y. Effect of pouring temperature on solidification structure of pure Al under pulse magneto-oscillation[J]. Journal of Shanghai University(Natural Science),2012,18(3):323. [31] LIANG D,LIANG Z Y,ZHAI Q J,et al. Nucleation and grain formation of pure Al under pulse magneto-oscillation treatment[J]. Materials Letters,2014,130:48. [32] 王海洋,滕力宏,赵阳,等. PMO作用对连铸轴承钢凝固组织及碳化物的影响[J]. 连铸,2018(6):32. (WANG H Y,TENG L H,ZHAO Y,et al. Influence of pulse magneto-oscillation on solidification structure and carbides in bearing steel billet[J]. Continuous Casting,2018(6):32.) [33] 郝军利,赵静,仲红刚,等. PMO作用下连铸二冷区电磁场-流场-温度场的数值模拟[J]. 上海大学学报(自然科学版),2018,24(3):412. (HAO J L,ZHAO J,ZHONG H G,et al. Coupled numerical simulation on electromagnetic field flow field and temperature field in round billet secondary cooling zone with PMO[J]. Journal of Shanghai university(Nature science),2018,24(3):412.) [34] 刘芳,张璐云. 脉冲磁致振荡对纯铝熔体电磁力和流场影响的数值模拟[J]. 热加工工艺,2012,61(3):285. (LIU F,ZHANG L Y. Numerical simulation of effect of pulse magneto-oscillation on magnetic force and flow field of pure aluminum melt[J]. Hot working technology,2012,61(3):285.) [35] 龚永勇,程书敏,钟玉义,等. 脉冲磁致振荡凝固技术[J]. 金属学报,2018,54(5):757. (GONG Y Y,CHENG S M,ZHONG Y Y,et al. The solidification technology of pulsed magneto oscillation[J]. Acta Metallurgica Sinica,2018,54(5):757.) [36] 仲红刚,刘海宁,徐智帅,等. 脉冲磁致振荡凝固均质化技术及装备[J]. 钢铁,2019,54(8):174. (ZHONG H G,LIU H N,XU Z S,et al. Solidification homogenizing technology and equipment[J]. Iron and steel,2019,54(8):174.) [37] 仲红刚,吴聪森,倪杰,等. 节铬型铁素体不锈钢连铸板坯凝固过程热模拟[J]. 钢铁研究学报,2015,27(5):30. (ZHONG H G,WU C S,NI J,et al. Thermal simulation of solidification process of Cr-saved ferritic stainless steel in continuous casting process[J]. Journal of Iron and Steel Research,2015,27(5):30.) [38] 李开创,李莉娟,蔡常青,等. M-PMO对HRB400EG螺纹钢连铸坯中夹杂物的影响[J]. 钢铁,2023,58(4):58. (LI K C,LI L J,CAI C Q,et al. Effect of M-PMO on inclusion of HRB400EGthread steel continuous casting billet[J]. Iron and steel,2023,58(4):58.) [39] 敖鹭,仲红刚,陈湘茹,等. 过热度对60Si2MnA弹簧钢连铸坯凝固组织的影响[J]. 钢铁,2010,45(12):68. (AO L,ZHONG H G,CHEN X R,et al. Effect of superheat degree on solidification structure of 60Si2MnA spring steel billet[J]. Iron and steel,2010,45(12):68.) [40] 张云虎,仲红刚,翟启杰. 脉冲电磁场凝固组织细化和均质化技术研究与应用进展[J]. 钢铁研究学报,2017,29(4):249. (ZHANG Y H,ZHONG H G,ZHAI Q J. Research progress of grain refinement and homogenization of solidified metal alloys driven by pulsed electromagnetic fields[J]. Journal of Iron and Steel Research,2017,29(4):249.) [41] 干勇,赵沛,王玫,等. 振动激发金属液原位形核的物理模拟[J]. 钢铁研究学报,2006,18(8):9. (GAN Y,ZHAO P,WANG M,et al. Physical analogue of liquid metal original position nucleation stirred by vibration[J]. Journal of Iron and Steel Research,2006,18(8):9.) [42] 赵沛,仇圣桃. 铸坯的等轴晶化和均质性的研究[C]//第一届中德(欧)冶金技术研讨会论文集. 北京:中国金属学会,2004.(ZHAO P,QIU S T. Study on equiaxed crystallization and homogeneity of cast billets[C]//Proceedings of the first China-German (European) Metallurgical Technology Seminar. Beijing:The Chinese Society for Metals,2004.) [43] 翟启杰. 金属凝固组织细化技术基础[M]. 北京:科学出版社,2018.(ZHAI Q J. Fundamentals of Metals Solidification Structure Refinement Technology[M]. Beijing:Science Press,2018.) [44] GONG Y Y,CHENG S M,ZHONG Y Y,et al. Influence of electromagnetic parameters on solidification structure of pure Al in the case of identical power[J]. Journal of Iron and Steel Research International,2018,25(8):854. [45] FREDRIKSSON H,HILLERT M.,NICA M. Decomposition of the M2C carbide in high-speed steel[J]. Scandinavian Journal of Metallurgy,1979,8(3):115. [46] ZHOU X F,FANG F,LI F,et al. Morphology and microstructure of M2C carbide formed at different cooling rates in AISI M2 high-speed steel[J]. Journal of Materials Science,2011,46(5):1196. [47] XIAO Z X,LI H P,FENG J H,et al. Microstructure homogeneity of high-speed steel M2 ingot by electroslag remelting[J]. Journal of Iron and Steel Research,2018,30(7):529. [48] 干勇,王忠英. 国内特殊钢连铸生产技术的现状和发展[J]. 特殊钢,2005,26(30):1. (GAN Y,WANG Z Y. Present status and development of continuous casting technology for special steel in China[J]. Special Steel,2005,26(30):1.) [49] 赵静,秦红星,刘国超,等. PMO脉冲参数对钢液内电磁场和流场分布的影响[J]. 上海金属,2020,42(1):68. (ZHAO J,QING H X,LIU G C,et al. Effect of pulse parameters of pulse magneto-oscillation on distribution of electromagnetic fields and flow fields in molten steel[J]. Shanghai Metals,2020,42(1):68.) [50] 周雪峰,方峰,蒋建清. Al对高速钢M2C共晶碳化物的影响[J]. 铸造技术,2009,30(2):160. (ZHOU X F,FANG F,JIANG J Q. Effect of Al on M2C eutectic carbides in high-speed steel[J]. Foundry Technology,2009,30(2):160.) [51] 周雪峰,方峰,涂益友,等. Al对M2高速钢凝固组织的影响[J]. 金属学报,2014,50(7):769. (ZHOU X F,FANG F,TU Y Y,et al. Effect of Al on the solidification microstructure of M2 high-speed steel[J]. Acta Metallurgica Sinica,2014,50(7):769.) [52] EDRY I,FRAGE N,HAYUN S. The effect of pulse magneto-oscillation treatment on the structure of aluminum solidified under controlled convection[J]. Materials Letters,2016,182:118. [53] EDRY I,MORDECHAI T,FRAGE N,et al. Effects of treatment duration and cooling rate on pure aluminum solidification upon pulse magneto-oscillation treatment[J]. Metallurgical and Materials Transactions A,2016,47(3):1. [54] EDRY I,ERUKHIMOVITCH V,SHOIHET A,et al. Effect of impurity levels on the structure of solidified aluminum under pulse magneto-oscillation (PMO)[J]. Journal of Materials Science,2013,48(24):8438. [55] 朱富强,任振海,陈占领,等. 采用脉冲磁致振荡技术提高矩形AM2锚链钢连铸坯的均匀性[J]. 上海金属,2019,41(3):96. (ZHU F Q,REN Z H,CHEN Z L,et al. Improvement in homogeneity of continuously cast rectangular billets of AM2 anchor steel by pulse magneto-oscillation technology[J]. Shanghai Metals,2019,41(3):96.) [56] SUN J. Influence of pulse magneto-oscillation on microstructure and mechanical property of rectangular 65Mn steel ingot[J]. Journal of Iron and Steel Research International,2018,25(8):862. [57] 任振海,朱富强,陈占领,等. 拉速和脉冲磁致振荡对GCr15轴承钢铸坯质量的影响[J]. 上海金属,2020,42(1):91. (REN Z H,ZHU F Q,CHEN Z L,et al. Effect of casting speed and pulsed magneto-oscillation on quality of GCr15 bearing steel billet[J]. Shanghai Metals,2020,42(1):91.) [58] 刘海宁,李辉成,李涛,等. PMO对GCr15轴承钢矩形坯心部微观组织及元素分布的影响[J]. 铸造,2022,71(2):164. (LIU H N,LI H C,LI T,et al. Effect of PMO on microstructure and element distribution of rectangular billet of GCr15 bearing steel[J]. Foundry,2022,71(2):164.) [59] 孙满意,谭毅,王以霖,等. 电子束熔炼对高速钢碳化物的影响[J]. 钢铁,2021,56(3):103. (SUN M Y,TAN Y,WANG Y L,et al. Effect of electron beam melting on carbide of high-speed steel[J]. Iron and steel,2021,56(3):103.) [60] 林鸿亮,尚秀玲,施斌卿. Mn13高锰钢连铸坯冷却过程中碳化物的析出特征[J]. 连铸,2023(1):66. (LIN H L,SHANG X L,SHI B Q. Precipitation characteristics of the carbides for Mn13 high manganese steel slab during cooling[J]. Continuous Casting,2023(1):66.) [61] 张亚兵,王东兴,赵立,等. PMO作用下35CrMnSi合金结构钢铸坯的元素分布[J]. 连铸,2023(2):78. (ZHANG Y B,WANG D X,ZHAO L,et al. Solute distribution of 35CrMnSi structural alloy steel billet under the effect of PMO[J]. Continuous Casting,2023(2):78.)
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