Effects of La on Microstructure and Corrosion Behavior of AlSi5Cu1Mg Alloy

doi:10.1007/s40195-018-0782-9

Acta Metallurgica Sinica (English Letters) ›› 2019, Vol. 32 ›› Issue (4): 443-451.DOI: 10.1007/s40195-018-0782-9

Special Issue: 2019年腐蚀专辑-2

• Orginal Article • Previous Articles Next Articles

Effects of La on Microstructure and Corrosion Behavior of AlSi5Cu1Mg Alloy

Bao-Biao Yu^1,², Hong Yan^1,²(), Jian-Bin Zhu^1,², Jian-Long Liu³, Huo-Gen Li³, Qiao Nie³

1 School of Mechanical and Electrical Engineering, Nanchang University, Nanchang 330031, China
2 Key Laboratory of Light Alloy Preparation and Processing in Nanchang City, Nanchang 330031, China
3 Jiangxi Ling-Ge Non-ferrous Metal Processing Co., Ltd., Nanchang 330008, China

Received:2018-04-17 Revised:2018-05-15 Online:2019-04-10 Published:2019-04-19
Contact: Yan Hong
About author:
Dr. Kun-Kun Deng was born in 1983 and was awarded Ph. D in Harbin University of Technology in 2011. After graduation, he worked in the College of Materials Science and Engineering, Taiyuan University of Technology. At the same time, he continued his research work on the design, fabrication and processing of advanced Mg-based material in. Now, he is the vice chairman of Youth Committee in Magnesium Alloy Branch of Chinese Materials Research Society. He was denoted as young academic pacemaker of Shanxi Province in 2018. He has held two projects of National Nature Science Foundation of China, one project of Specialized Research Fund for the Doctoral Program of Higher Education, one Project of International Cooperation in Shanxi and two projects of Natural Science Foundation of Shanxi. He has published more than 60 articles. The time cited is more than 840 (without selfcitations), and the H-index is 22. In addition, he has published one academic monograph and acquired eight Chinese patents.

Abstract

Abstract:

The microstructures and corrosion behavior of AlSi5Cu1Mg alloy modified with different contents of La were investigated. Optical microscopy observations showed that the microstructures of AlSi5Cu1Mg-xLa (x = 0, 0.3, 0.6, and 0.9 wt%) alloy transformed from coarse cellular to fine cellular as the content of La increased from 0 to 0.9 wt%. The results of electrochemical measurement and immersion test in 3.5 wt% NaCl solution showed that the corrosion resistance of AlSi5Cu1Mg-xLa alloy strongly depended on its microstructures. The AlSi5Cu1Mg-0.6La sample exhibited the highest corrosion resistance due to its fine cellular structure and the cathode phases coated by the La element. The covering film of La hindered the corrosion electron flowing between the cathode and the anode. As a result, the corrosion current density of the AlSi5Cu1Mg-0.6La alloy was only about 40% that of the matrix alloy in the electrochemical measurement.

Key words: La, AlSi5Cu1Mg alloy, Microstructure, Corrosion behavior

Bao-Biao Yu, Hong Yan, Jian-Bin Zhu, Jian-Long Liu, Huo-Gen Li, Qiao Nie. Effects of La on Microstructure and Corrosion Behavior of AlSi5Cu1Mg Alloy[J]. Acta Metallurgica Sinica (English Letters), 2019, 32(4): 443-451.

Figures/Tables 7

Table 1 Chemical compositions of AlSi5Cu1Mg-xLa alloy (wt%)

Alloy	Si	Cu	Mg	Fe	Zn	Mn	La	Al
AlSi5Cu1Mg	5.40	1.05	0.43	0.59	0.14	0.32	-	Bal.
AlSi5Cu1Mg-0.3La	5.20	1.03	0.41	0.60	0.11	0.28	0.30	Bal.
AlSi5Cu1Mg-0.6La	5.20	0.99	0.45	0.61	0.17	0.31	0.61	Bal.
AlSi5Cu1Mg-0.9La	5.20	1.03	0.40	0.61	0.14	0.27	0.87	Bal.

Fig. 1 Optical microstructures of uncorroded AlSi5Cu1Mg-xLa alloy: a 0 wt% La; b 0.3 wt% La; c 0.6 wt% La; d 0.9 wt% La

Fig. 2 Backscattered SEM images of AlSi5Cu1Mg-0.9La at low a, high b magnification and area scanning of La-rich intermetallic compounds of elements Al c, Si d, Cu e, La f

Fig. 3 Backscattered SEM image a, EDS analysis b of AlSi5Cu1Mg-0.9La alloy extracted by 20 wt% NaOH solution with 20 min

Fig. 4 a Linear scan voltammetry curves of AlSi5Cu1Mg-xLa alloy in 3.5 wt% NaCl solution, b corrosion potential (Ecorr) and corrosion current density (Icorr) calculated from linear scan voltammetry curves (E: potential; I: current density)

Fig. 5 SEM images of corrosion morphologies of AlSi5Cu1Mg-xLa alloy: a AlSi5Cu1Mg; b AlSi5Cu1Mg-0.3La; c AlSi5Cu1Mg-0.6La; d AlSi5Cu1Mg-0.9La

Fig. 6 Morphologies of micro-galvanic corrosion reaction between La-Al-Cu phase and surrounding α-Al after immersion for 30 days a, 60 days b

References

[1]	X.H. Chen, H. Yan, J. Alloys Compd. 708, 129(2014)
[2]	J.B. Zhu, H. Yan, H.Y. Ye, F.R. Ai, J. Centr, South Univ. 24, 1934 (2017)
[3]	H. Yan, F.H. Chen, Z.H. Li, J. Rare Earth 34, 938 (2016)
[4]	Q.J. Wu, H. Yan, P.X. Zhang, X.Q. Zhu, Q. Nie, Acta Metall. Sin (Engl. Lett.) 31, 523(2018)
[5]	J.J. Pang, F.C. Liu, J. Liu, M.J. Tan, D.J. Blackwood, Corros. Sci. 106, 217(2016)
[6]	A. Raul, M. Beatriz, A. Pardo, M. Marta, M. Endzhe, R.D. Ivan, Corros. Sci. 73, 342(2013)
[7]	T. Fatih, A. Alexandra, I. Kerti, A. Edith, A.R. Luis, Wear 306, 27 (2013)
[8]	A.C. Vieira, M.P. Ana, A.R. Luis, M. Stefano, Electrochim. Acta 56, 3821 (2011)
[9]	L. Milosev, B. Volaric, Corrosion 73, 822 (2017)
[10]	B.S. Gu, L. Gong, P.Y. Yang, Rare Met. Mater. Eng. 43, 429(2014)
[11]	C.L. Wang, Y. Gao, Rare Met. Mater. Eng. 46, 812(2017)
[12]	K.L. Wang, Q.B. Zhang, M.L. Sun, X.G. Wei, Y.M. Zhu, Corros. Sci. 43, 255(2001)
[13]	X. Zhang, Z.H. Wang, Z.H. Zhou, J.M. Xu, J. Alloys Compd. 698, 241(2016)
[14]	Y. Wang, R.K. Gupta, N.L. Sukiman, R. Zhuang, C.H.J. Davies, N. Birbilis, Corros. Sci. 73, 181(2013)
[15]	A.M. Cardinalea, D. Macciò, G. Luciano, E. Canepa, P. Traverso, J. Alloys Compd.695. 2180 (2016)
[16]	F. Mao, G.Y. Yan, Z.J. Xuan, Z.Q. Cao, T.M. Wang, J. Alloys Compd. 650, 896(2015)
[17]	Z.H. Li, H. Yan, Z. Hu, X.C. Song, Rare Met. 9, 1(2014)
[18]	X. Huang, H. Yan, J. Wuhan Univ. Technol. 28, 202(2013)
[19]	S.C. Wang, N. Zhou, D.F. Song, D. Nong, Mater. Sci. Forum 898, 367 (2017)
[20]	A. Takeuchi, A. Inoue, Metall. Mater. Trans. A 46, 2817 (2005)
[21]	L.J. Jing, Y. Pan, T. Lu, C.L. Li, J.H. Pi, N.Y. Sheng, J. Mater. Eng. Perform. 27, 1(2018)
[22]	Y. Zou, J. Wang, Y.Y. Zheng, Corros. Sci. 53, 208(2011)
[23]	A. Raul, M. Beatriz, A. Pardo, M. Marta, M. Endzhe, C.M. Maria, A. Rivas, Mater. Corros. 66, 535(2015)
[24]	G. Srinivas, P.C. Jesus, V.V. Edna, M. Casales, D.M. Ortega, M.G. Lorenzo, J. Spectrosc. 2015, 1(2015)
[25]	H.M. Jia, X.H. Feng, Y.S. Yang, Corros. Sci. 120, 75(2017)

Effects of La on Microstructure and Corrosion Behavior of AlSi5Cu1Mg Alloy

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 7

References

Related Articles 15

Recommended Articles

Metrics

Comments

[1]	Kai Yan, Huan Liu, Xiaowei Xue, Jing Bai, Honghui Chen, Shuangquan Fang, Jingjing Liu. Enhancing Mechanical Properties of Mg-6Zn Alloy by Deformation-Induced Nanoprecipitation [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(2): 217-226.
[2]	Chun-Hua Ma, Fu-Sheng Pan, Ding-Fei Zhang, Ai-Tao Tang, Zhi-Wen Lu. Effects of Sb Addition on Microstructural Evolution and Mechanical Properties of Mg-9Al-5Sn Alloy [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(2): 278-288.
[3]	Ping Deng, En-Hou Han, Qunjia Peng, Chen Sun. Corrosion Behavior and Mechanism of Irradiated 304 Nuclear Grade Stainless Steel in High-Temperature Water [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(2): 174-186.
[4]	Zongye Ding, Naifang Zhang, Liao Yu, Wenquan Lu, Jianguo Li, Qiaodan Hu. Recent Progress in Metallurgical Bonding Mechanisms at the Liquid/Solid Interface of Dissimilar Metals Investigated via in situ X-ray Imaging Technologies [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(2): 145-168.
[5]	L. B. Tong, J. H. Chu, D. N. Zou, Q. Sun, S. Kamado, H. G. Brokmeier, M. Y. Zheng. Simultaneously Enhanced Mechanical Properties and Damping Capacities of ZK60 Mg Alloys Processed by Multi-Directional Forging [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(2): 265-277.
[6]	Baojie Wang, Daokui Xu, Tianyu Zhao, Liyuan Sheng. Effect of CaCl₂ and NaHCO₃ in Physiological Saline Solution on the Corrosion Behavior of an As-Extruded Mg-Zn-Y-Nd alloy [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(2): 239-247.
[7]	Quan Wen, Wenya Li, Vivek Patel, Luciano Bergmann, Benjamin Klusemann, Jorge F. dos Santos. Assessing the Bonding Interface Characteristics and Mechanical Properties of Bobbin Tool Friction Stir Welded Dissimilar Aluminum Alloy Joints [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 125-134.
[8]	Xi Zhao, Fa-Fa Yan, Zhi-Min Zhang, Peng-Cheng Gao, Shu-Chang Li. Influence of Heat Treatment on Precipitation Behavior and Mechanical Properties of Extruded AZ80 Magnesium Alloy [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 54-64.
[9]	Yuanyuan Liu, Zhongmin Lang, Jinlong Cui, Shengli An. Performance of Nb_0.8Zr_0.2 Layer-Modified AISI430 Stainless Steel as Bipolar Plates for Direct Formic Acid Fuel Cells [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 77-84.
[10]	Meichen Liang, Hao Zhang, Lifeng Zhang, Peng Xue, Dingrui Ni, Weizhen Wang, Zongyi Ma, Hengqiang Ye, Zhiqing Yang. Evolution of Quasicrystals and Long-Period Stacking Ordered Structures During Severe Plastic Deformation and Mixing of Dissimilar Mg Alloys Upon Friction Stir Welding [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 12-24.
[11]	Jinglin Liu, Qi Song, Lihui Song, Shude Ji, Mingshen Li, Zhen Jia, Kang Yang. A Novel Friction Stir Spot Riveting of Al/Cu Dissimilar Materials [J]. Acta Metallurgica Sinica (English Letters), 2021, 34(1): 135-144.
[12]	Li-Sha Wang, Jing-Hua Jiang, Bassiouny Saleh, Qiu-Yuan Xie, Qiong Xu, Huan Liu, Ai-Bin Ma. Controlling Corrosion Resistance of a Biodegradable Mg-Y-Zn Alloy with LPSO Phases via Multi-pass ECAP Process [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(9): 1180-1190.
[13]	Dan-Yang Liu, Jin-Feng Li, Yong-Cheng Lin, Peng-Cheng Ma, Yong-Lai Chen, Xu-Hu Zhang, Rui-Feng Zhang. Cu/Li Ratio on the Microstructure Evolution and Corrosion Behaviors of Al-xCu-yLi-Mg Alloys [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(9): 1201-1216.
[14]	He Huang, Huan Liu, Li-Sha Wang, Yu-Hua Li, Solomon-Oshioke Agbedor, Jing Bai, Feng Xue, Jing-Hua Jiang. A High-Strength and Biodegradable Zn-Mg Alloy with Refined Ternary Eutectic Structure Processed by ECAP [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(9): 1191-1200.
[15]	Xudong Du, Feng Wang, Zhi Wang, Xingxing Li, Zheng Liu, Pingli Mao. Hot Tearing Susceptibility of AXJ530 Alloy Under Low-Frequency Alternating Magnetic Field [J]. Acta Metallurgica Sinica (English Letters), 2020, 33(9): 1259-1270.