Please wait a minute...
Acta Metall Sin  2019, Vol. 55 Issue (11): 1388-1394    DOI: 10.11900/0412.1961.2018.00560
Current Issue | Archive | Adv Search |
Effect of Alternating Current Magnetic Field on the Primary Phase of Hypereutectic Al-Fe Alloy
ZHANG Jianfeng1,LAN Qing2,GUO Ruizhen2,LE Qichi2()
1. College of Science, Northeastern University, Shenyang 110819, China
2. Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China
Download:  HTML  PDF(11881KB) 
Export:  BibTeX | EndNote (RIS)      
Abstract  

The type, morphology and distribution of the Fe-phase in the Al-Fe alloy are some of the key factors affecting the mechanical properties of the Al-Fe alloy. The alternating current (AC) magnetic field can significantly affect the solidification structure of the Al-Fe alloy. However, the mechanism of the Fe-phase in the Al-Fe alloy influenced by the AC magnetic field has not been fully revealed. Therefore, the effect of AC magnetic field on the primary phase of hypereutectic Al-2.55%Fe alloy is studied by means of XRD and OM in this work. The results show that the AC magnetic field cannot change the type of primary phase of the hypereutectic Al-2.55%Fe alloy, which means that the primary phase remains to be Al3Fe phase regardless of the treatment of the AC magnetic field, but the AC magnetic field can obviously influence the distribution and the morphology of the primary Al3Fe phase. Without treatment of AC magnetic field, the primary Al3Fe phase is fine and granular, and uniformly distributed at the bottom of the sample under the effect of gravity. However, under the influence of the AC magnetic field, most of the primary Al3Fe phase is located at the top edge of the sample and is distributed in the shape of a triangle along the radial direction, with only a small part of the fine, granular primary Al3Fe phase distributed in the shape of a pyramid at the bottom of the sample. At the same time, the primary Al3Fe phase morphology in the top of the sample transforms from the original fine particles to large blocks and rods. With the increase of the magnetic induction intensity, the influence of the AC magnetic field on the distribution and morphology of the primary Al3Fe phase grows stronger, and the content of the primary Al3Fe phase in the top of the sample also increases. The influence of AC magnetic field on the primary phase distribution and morphology of the hypereutectic Al-2.55%Fe alloy is the result of the combined action of the Lorentz force and the magnetic force generated by the AC magnetic field.

Key words:  AC magnetic field      hypereutectic Al-Fe alloy      solidification structure      primary phase     
Received:  21 December 2018     
ZTFLH:  TG113.12  
Fund: China Postdoctoral Science Foundation Funded Project No(2015M571320);and Fundamental Research Funds for the Central Universities(N150504002)
Corresponding Authors:  Qichi LE     E-mail:  qichil@mail.neu.edu.cn

Cite this article: 

ZHANG Jianfeng,LAN Qing,GUO Ruizhen,LE Qichi. Effect of Alternating Current Magnetic Field on the Primary Phase of Hypereutectic Al-Fe Alloy. Acta Metall Sin, 2019, 55(11): 1388-1394.

URL: 

https://www.ams.org.cn/EN/10.11900/0412.1961.2018.00560     OR     https://www.ams.org.cn/EN/Y2019/V55/I11/1388

Fig.1  Schematic of the experiment equipment
Fig.2  Solidification microstructure of Al-2.55%Fe alloy without alternating current magnetic field (a) and high magnified OM images of zone b (b), zone c (c), zone d (d) and zone e (e) in Fig.2a
Fig.3  Solidification microstructure of Al-2.55%Fe alloy with alternating current magnetic field (20 Hz, 300 A) (a) and high magnified OM images of zone b (b), zone c (c), zone d (d) and zone e (e) in Fig.3a
Fig.4  Solidification microstructure of Al-2.55%Fe alloy with alternating current magnetic field (20 Hz, 200 A) (a) and high magnified OM images of zone b (b), zone c (c), zone d (d) and zone e (e) in Fig.4a
Fig.5  Solidification microstructure of Al-2.55%Fe alloy with alternating current magnetic field (20 Hz, 100 A) (a) and high magnified OM images of zone b (b), zone c (c), zone d (d) and zone e (e) in Fig.5a
Fig.6  XRD spectra of the hypereutectic Al-2.55%Fe alloy with (a) and without (b) alternating current magnetic field (20 Hz, 100 A)
Fig.7  Schematics of the Lorentz force (B—magnetic induction, μ0—permeability of vacuum, ?—nabla operator)(a) rotational force part (fro) (b) non-rotational force part (fir)
[1] LuL, DahleA K. Iron-rich intermetallic phases and their role in casting defect formation in hypoeutectic Al-Si alloys [J]. Metall. Mater. Trans., 2005, 36A: 819
[2] KhalifaW, SamuelF H, GruzleskiJ E. Iron intermetallic phases in the Al corner of the Al-Si-Fe system [J]. Metall. Mater. Trans., 2003, 34A: 807
[3] PengS, ChenL P, ZhouQ. Research progress on microstructure refinement of Al-Fe alloy [J]. Found. Technol., 2013, 34: 523
[3] 彭 帅, 陈乐平, 周 全. Al-Fe合金凝固组织细化研究新进展 [J]. 铸造技术, 2013, 34: 523
[4] WangX, GuanR G, WangY. Formation mechanism of nanoscale Al3Fe phase in Al-Fe alloy during semisolid forming process [J]. Metall. Mater. Trans., 2018, 49B: 2225
[5] WangX J, ZhaoZ H, ZuoY B, et al. Effects of low frequency electromagnetic field on solidification of 7050 aluminium alloy during hot top casting [J]. Mater. Sci. Technol., 2009, 25: 1207
[6] PathakB N, KumarA, SahooK L, et al. Effect of Ni-Mg on the microstructure and properties of Al-(4-5)Fe-1V-1Si alloys [J]. Mater. Sci. Eng., 2006, A433: 310
[7] ZhaoY H, WangX B, LiuY L, et al. Influence of Si content and heat treatment on microstructure of Al-Fe-Si alloys [J]. China Found., 2014, 11: 418
[8] WangX, GuanR G, MisraR D K, et al. The mechanistic contribution of nanosized Al3Fe phase on the mechanical properties of Al-Fe alloy [J]. Mater. Sci. Eng., 2018, A724: 452
[9] LiuB, YuanX G, HuangH J. Microstructure and mechanical properties of hypereutectic Al-Fe alloys prepared by semi-solid formation [J]. China Found., 2011, 8: 424
[10] GillonP. Uses of intense d.c. magnetic fields in materials processing [J]. Mater. Sci. Eng., 2000, A287: 146
[11] JiaP, WangE G, LuH, et al. Effect of electromagnetic field on microstructure and mechanical property for Inconel 625 superalloy [J]. Acta Metall. Sin., 2013, 49: 1573
[11] 贾 鹏, 王恩刚, 鲁 辉等. 电磁场对Inconel 625合金凝固组织及力学性能的影响 [J]. 金属学报, 2013, 49: 1573
[12] LiX, RenZ M, FautrelleY. Phase distribution and phase structure control through a high gradient magnetic field during the solidification process [J]. Mater. Des., 2008, 29: 1796
[13] ChenD D, ZhangH T, WangX J, et al. Investigation on Microsegregation of Al-4.5%Cu alloy produced by low frequency electromagnetic casting [J]. Acta Metall. Sin., 2011, 47: 185
[13] 陈丹丹, 张海涛, 王向杰等. 低频电磁铸造Al-4.5%Cu合金微观偏析研究 [J]. 金属学报, 2011, 47: 185
[14] XuX J, DengA Y, WangE G, et al. Evolvement mechanism of surface oscillation marks on round billet during soft-contact electromagnetic continuous casting [J]. Acta Metall. Sin., 2009, 45: 464
[14] 许秀杰, 邓安元, 王恩刚等. 电磁软接触连铸圆坯表面振痕演变机理 [J]. 金属学报, 2009, 45: 464
[15] HanY, BanC Y, GuoS J, et al. Alignment behavior of primary Al3Fe phase in Al-Fe alloy under a high magnetic field [J]. Mater. Lett., 2007, 61: 983
[16] Huhemandula, YangH T, JiW H, et al. Effect of alternating magnetic field on microstructure and property of Al-5%Fe alloy [J]. Found. Technol., 2016, 37: 285
[16] 呼和满都拉, 杨洪涛, 冀文慧等. 电磁物理场对Al-5%Fe合金组织与性能的影响[J]. 铸造科技, 2016, 37: 285
[17] ZhangH T, NagaumiH, ZuoY B, et al. Coupled modeling of electromagnetic field, fluid flow, heat transfer and solidification during low frequency electromagnetic casting of 7XXX aluminum alloys: Part 1: Development of a mathematical model and comparison with experimental results [J]. Mater. Sci. Eng., 2007, A448: 189
[18] LiM J, TamuraT, MiwaK. Controlling microstructures of AZ31 magnesium alloys by an electromagnetic vibration technique during solidification: From experimental observation to theoretical understanding [J]. Acta Mater., 2007, 55: 4635
[19] ZhangT, RenW L, DongJ W, et al. Effect of high magnetic field on the primary dendrite arm spacing and segregation of directionally solidified superalloy DZ417G [J]. J. Alloys Compd., 2009, 487: 612
[20] GuoS H. Electrodynamics [M]. 2nd Ed., Beijing: Higher Education Press, 1997: 118
[20] 郭硕鸿. 电动力学 [M]. 第2版,北京: 高等教育出版社, 1997: 118
[1] LI Gen, LAN Peng, ZHANG Jiaquan. Solidification Structure Refinement in TWIP Steel by Ce Inoculation[J]. 金属学报, 2020, 56(5): 704-714.
[2] Chunlei WU,Dewei LI,Xiaowei ZHU,Qiang WANG. Influence of Electromagnetic Swirling Flow in Nozzle on Solidification Structure and Macrosegregation of Continuous Casting Square Billet[J]. 金属学报, 2019, 55(7): 875-884.
[3] Bo LI,Zhonghua ZHANG,Huasong LIU,Ming LUO,Peng LAN,Haiyan TANG,Jiaquan ZHANG. Characteristics and Evolution of the Spot Segregations and Banded Defects in High Strength Corrosion Resistant Tube Steel[J]. 金属学报, 2019, 55(6): 762-772.
[4] Baogang WANG, Hongliang YI, Guodong WANG, Zhichao LUO, Mingxin HUANG. Reconstruction of 3D Morphology of TiB2 in In Situ Fe Matrix Composites[J]. 金属学报, 2019, 55(1): 133-140.
[5] Jianfeng ZHANG, Qing LAN, Qichi LE. Investigation on the Change of Thermoelectric Power of Al-Fe Hypoeutectic Alloy Melt Caused by AC Magnetic Field[J]. 金属学报, 2018, 54(7): 1042-1050.
[6] Zheng LIU,Lina XU,Zhaofu YU,Yangzheng CHEN. RESEARCH ON THE MORPHOLOGY AND FRACTALDIMENSION OF PRIMARY PHASE IN SEMISOLIDA356-La ALUMINUM ALLOY BY ELECTRO-MAGNETIC STIRRING[J]. 金属学报, 2016, 52(6): 698-706.
[7] ZHANG Yuan, LI Xinzhong, LIU Guohuai, SU Yanqing, GUO Jingjie, FU Hengzhi. DEPENDENCE OF PRIMARY PHASE AND ITS GROWTH DIRECTION ON SOLIDIFICATION PROCESS IN DIRECTIONALLY SOLIDIFIED Ti-46Al-2Cr-2Nb ALLOY[J]. 金属学报, 2013, 49(9): 1061-1068.
[8] HU Rui, LIU Yi, ZHANG Tiebang, KOU Hongchao, LI Jinshan. PHASE SELECTION AND THE SOLIDIFICATION CHARACTERISTICS OF TiAl BASE ALLOYS IN THE NONEQUILIBRIUM SOLIDIFICATION[J]. 金属学报, 2013, 49(11): 1295-1302.
[9] ZHANG Yuan, LIU Guohuai, LI Xinzhong, CHEN Ruirun, SU Yanqing, GUO Jingjie, FU Hengzhi. EFFECTS OF GROWTH RATE ON PRIMARY PHASE AND MICROSTRUCTURES OF DIRECTIONALLY SOLIDIFIED Ti-46Al-2Cr-2Nb ALLOY[J]. 金属学报, 2013, 49(11): 1374-1380.
[10] ZHANG Jianfeng, LE Qichi, CUI Jianzhong. EFFECT OF AC MAGNETIC FIELD ON ELECTRIC RESISTANCE OF Sn-20%Pb ALLOY[J]. 金属学报, 2013, 49(1): 101-106.
[11] GUO Deyan SONG Jiajia CAI Liang MAO Yong. EFFECTS OF MELT MIXING WITH HIGH AND LOW TEMPERATURE MELTS ON SOLIDIFACATION MICROSTRUCTURES OF Au-20Sn EUTECTIC ALLOY[J]. 金属学报, 2012, 48(11): 1387-1393.
[12] WANG Changshuai ZHANG Jun ZOU Minming LIU Lin FU Hengzhi. THE RELAXATION PHENOMENON DURING MELT SUPERHEATING TREATMENT OF DZ125 ALLOY[J]. 金属学报, 2010, 46(6): 674-680.
[13] ZHAO Dongshan; QU Wenbang; WANG Renhui. Polythermal Projection Of Primary Al--Cu--Fe Icosahedral Quasicrystal Phase And The Related Crystal Phase[J]. 金属学报, 2004, 40(1): 14-19 .
No Suggested Reading articles found!