The effect of Si addition on microstructure and tribological properties of Fe-Al claddings produced by GTAW process

Subject Areas : journal of New Materials

Abbas Rostami ¹ , Mahdi Rafiei ²

1 - Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran.
2 - Advanced Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

Received: 2018-12-31 Accepted : 2019-11-26 Published : 2019-10-23

Keywords: GTAW, Cladding, Fe3Al, (FeوSi)3Al,

Abstract :

In this research, microstructure and tribological properties of CK45 steel coated with Fe-Al and Fe-Al-Si alloys using GTAW process were studied. In order to evaluate the microstructure and formed phases in the claddings, optical microscopy and X-ray diffractometery analysis were used. Also, tribological properties of the claddings were evaluated by pin-on-disk wear test at two different temperatures of 25 and 500 oC. Finally, the wear surfaces after the wear test were characterized by scanning electron microscopy to detect the main wear mechanism. It was found that the microstructure of Fe-Al-Si cladding was dendritic and lathy in some areas, while in Fe-Al cladding blade shape microstructure was seen. In Fe-Al-Si cladding owing to the presence of Si element, the width of cellular and planar solidification area was lower and dendritic solidification was seen. XRD analysis revealed that the main phase in Fe-Al binary and Fe-Al-Si ternary claddings were Fe3Al and (Fe,Si)3Al intermetallic compounds, respectively. Fe-Al-Si cladding indicated higher microhardness and wear resistance as compared with Fe-Al cladding. With addition of Si into the surface owing to microstructure refining and formation of (Fe,Si)3Al complex intermetallic compound the wear behavior of the surface improved. The predominant wear mechanism of both claddings was adhesion at room temperature, but at 500 oC, the predominant wear mechanism in Fe-Al cladding was micro-plowing abrasive while in Fe-Al-Si cladding was adhesive and abrasive.

References:

 [1] Du, X. S. Su, Y. J. Li, J. X. Qiao, L. J. Chu, W. Y. "Stress corrosion cracking of A537 steel in simulated marine environments ", Corrosion Science, Vol. 65, PP. 278–287, 2012.     

[2] García Fuentes, A. Salas, R. Centeno, L. del Rosario, A., "Crack growth study of dissimilar steels (Stainless- Structural) butt welded unions under cyclic loads," Procedia Engineering, Vol. 10, pp. 1917–1923, 2011.

[3] Y. Hua, W. Aihua, X. Zhaoting, X. Kaidong and H. Zaowen, Microstructure and wear resistance of composite layers on a ductile iron with multicarbide by laser surface alloying, Applied Surface Science, Vol. 256 pp. 7001-7009, 2010.

[4] محسن حاجیان فروشانی و مرتضی شمعانیان،" ارزیابی ریزساختار و رفتار سایشی چدن داکتیل زمینه فریتی پوشش داده شده با آلیاژ پایه نیکل پر کروم"، علوم و مهندسی سطح، شماره 25، 85-95، 1395.        

[5] N. Venkateswara Rao, G. Madhusudhan Reddy and S. Nagarjuna, Weld overlay

 

claddingof high strength low alloy steel with austenitic stainless steel Structure and properties, Materials and Design, Vol. 32, pp. 2496-2506, 2011.          

[6] F. Madadi, M. Shamanian and F. Ashrafizadeh, Effect of pulse current on microstructure and wear resistance of Stellite6/tungsten carbide claddings produced by tungsten inert gas process, Surface and Coating Technology, Vol. 205, pp. 4320-4328, 2011.

[7] Wang, W, Zhang, M, Qu, S, “Development and characterization of (Ti,Mo) carbides reinforced Fe-based surface composite coating produced by laser chadding”, Optics and Lasers in Engineering, Vol 48, pp. 893-898. 2010.

[8] Wang, Q, Li, X, ”Effect of Nb,V and won microstructure and Abrasion Resistance Of Fe-Cr-C Hardfacing Alloys”, Supplement to the Welding, pp. 133-139, 2010.

[9] Li, Q, Lei, Y, Fu, H, “Growth mechanism, distribution characteristics and reinforcing behavior of (Ti, Nb) C Particle in laser cladded Fe-based composite coating”, Applied Surface Science, Vol. 316, PP. 610-616, 2014.           

[10] Zhang, L, Sun, D, Yu, H, "Effect of niobium on the microstructure and wear resistance of iron- based alloy coating produced by plasma cladding”, Materials Science and Engineering A, Vol. 490, PP. 57-61, 2008.

[11] Liu, D, iu, R. L, Wei, Y, "Effects of titanium additive on microstructure and wear performance of iron- based slag-free self-Shielded flux-ored wire", Surface& Coatings Technology, Vol. 207, pp. 579-586, 2012 .           

[12] Hsieh, C. C, Liu, Y. C, Wang, J. S, Wu, A. W, "Microstructural evolution with Various Ti Contents in Fe-Based Hardfacing Alloys Using a TAW Technique", Department of Materials Science and Engineering, Vol. 20, pp. 701-712, 2014.           

[13] ساسان اژدری، فرهاد شهریاری نوگورانی، "اصلاح مورفولوژی سطحی پوشش تنگستنی ایجاد شده به روش پاشش پلاسمایی اتمسفری به منظور کاربرد در لامپ تولید پرتو ایکس، مواد نوین، جلد 8، شماره 4، 1397.

[14] L. Zh. Zhao, M. J. Zhao, D. Y. Li, J. Zhang, G. Y. Xiong," Study on Fe–Al–Si in situ composite coating fabricated by laser cladding", Applied Surface Science, Vol. 258, pp. 3368– 3372, 2012.  

[15] Correa, E, Alcantara, N, Valeriano, L, Barbedo, N, Chares, R, "the effect of microstructure on abrasive wear of a Fe-Cr-C-Nb hardfacing alloy deposited by the open arc Welding process", Surfacing coatings technology, Vol. 276, pp. 479-484, 2015.

[16] J. N. Li, Sh. L. Gong, H. Liu, H. X. Li," Physical properties and microstructures of Fe₃Al matrix laser amorphous nanocrystals reinforced coating",  Materials Letters, Vol. 92, pp. 235–238, 2013.        

[17] Yang, J, Huang, J, fan, D, chen, S, ”Microstructure and wear Properties Ties of Fe-6Wt.%Cr-0.55Wt.%C-Xwt.%Nb laser cladding coating and the mechanism analysis”, Materials and Design, Vol. 88, pp. 1031-1041, 2015.  

[18] A. Morozova, A. Mogucheva, D. Bukin, O. Lukianova, N. Korotkova, N. Belov and R. Kaibyshev," Effect of Si and Zr on the Microstructure and Properties of Al-Fe-Si-Zr Alloys", Metals, 2017, Vol. 7, pp. 495-507.

[19] K. Antony and A. Sreekanth," The Effect of Repeated Repair Welding on the Corrosion Behaviour of Austenitic Stainless Steel and Mild Steel Dissimilar Weldment", Proceedings of International Conference on Advances in Materials, Manufacturing and Applications (AMMA 2015), April 9-11, pp. 854-869, 2015.

[20] بهنام صادقی، حسن شریفی، مهدی رفیعی،" ارزیابی خواص اتصال غیرهمجنس فولاد زنگ نزن آستنیتی A321 به فولاد کربنی A537CL1 به روش GTAW"، علوم و فناوری جوشکاری ایران، سال سوم، شماره 1، صفحه10-20، 1396.