Investigation of Mechanical Property and Microstructure of Nanocomposite AZ31/SiC Fabricated by Friction Stir Process

محورهای موضوعی : Mechanical Engineering

ahmad haghani ¹ , Sayed Hassan Nourbakhsh ² , Mehdi Jahangiri ³

1 - Department of Mechanics, Faculty of Engineering, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran
2 - Department of Mechanical Engineering, University of Shahrekord, Shahrekord, Iran
3 - Department of Mechanical Engineering, Faculty of Engineering, Shahrekord Branch, Islamic Azad University, Shahrekord, Iran

تاریخ دریافت : 1394/08/13 تاریخ پذیرش : 1396/08/09 تاریخ انتشار : 1395/03/12

کلید واژه: SiC nanoparticles, Magnesium AZ31, Friction stir process, Mechanical strength,

چکیده مقاله :

The friction stir process (FSP) is a solid state process, which has been used to insert reinforcing particles into the structure of a material to create a composite with improved properties. Magnesium is a light structural metal that is increasingly used in the aerospace and automobile industries. In this research, SiC nanoparticles were added to AZ31 alloy using FSP in two overlaps of 100% and 50% passes. In 100% pass overlapping, nanoparticles were added in 4, 8 and 16 volume percentages and in 50% pass overlapping only nanoparticles in 4 volume percent were added. The FSP process performed as 4 consecutive passes in both overlaps along with rapid cooling. Microstructure, hardness and tensile strength of created composites were examined. The results suggested that adding reinforcing materials causes reduction in the size of the grains, uniformity of structure and increase in the hardness of material. SiC nanoparticles distributed uniformly through the AZ31 alloy. By increasing volume fraction of reinforcing materials, yield stress of the material increased but ultimate stress and formability properties reduced. In 50% overlapping state, the yield stress in directions, either parallel or perpendicular to the pin direction, increased rather than 100% overlapping state, but the ultimate stress and elongation properties reduced. This reduction was greater in the perpendicular direction relative to the pin direction.

منابع و مأخذ:

[1]     Mordike, B., L., Ebert, T., “Magnesium: Properties,   applications,  potential”, Journal of Materials Science and Engineering: A, Vol. 302, 2001, pp. 37-45.

[2]     Darras, B., Kishta, E., “Submerged friction stir processing of AZ31 Magnesium alloy”, Journal of Materials & Design, Vol. 47, 2013, pp. 133-137.

[3]     Pradeep, S., Pancholi, V., “Effect of microstructural inhomogeneity on superplastic behaviour of multipass friction stir processed aluminium alloy”, Journal of Materials Science and Engineering: A, Vol. 561, 2013, pp. 78-87.

[4]     Ramesh, K., N., Pradeep, S., and Pancholi, V., “Multipass Friction-Stir Processing and its Effect on Mechanical Properties of Aluminum Alloy 5086”, Journal of Metallurgical and Materials Transaction A, Vol. 43, 2012, pp. 4311-4319.

[5]     Venkateswarlu, G., Devaraju, D., Davidson, M., J., Kotiveerachari, B., and Tagore, G., “Effect of overlapping ratio on mechanical properties and formability of friction stir processed Mg AZ31B alloy”, Journal of Materials & Design, Vol. 45, 2013, pp. 480-486.

[6]     Yuan, W., Mishra, R., S., “Grain size and texture effects on deformation behavior of AZ31 magnesium alloy”, Journal of Materials Science and Engineering: A, Vol. 558, 2012, pp. 716-724.

[7]     Dolatkhah, A., Golbabaei, P., BesharatiGivi, M., K., and Molaiekiya, F., “Investigating effects of process parameters on microstructural and mechanical properties of Al5052/SiC metal matrix composite fabricated via friction stir processing”, Journal of Materials & Design, Vol. 37, 2012, pp.458-464.

[8]     Salehi, M., Saadatmand, M., and Aghazadeh Mohandesi, J., “Optimization of process parameters for producing AA6061/SiC nanocomposites by friction stir processing”, Journal of Transactions of Nonferrous Metals Society of China, Vol. 22, 2012, pp. 1055-1063.

[9]       Choi, D. H., Kim, Y. I., Kim, D., and Jung, S. B., “Effect of SiC particles on microstructure and mechanical property of friction stir processed AA6061-T4”, Journal of Transactions of Nonferrous Metals Society of China, Vol. 22, 2012, pp. 614-618.

[10]    Mostafapour Asl, A., Khandani, S., T., “Role of hybrid ratio in microstructural, mechanical and sliding wear properties of the Al5083/Graphitep/Al2O3p a surface hybrid nanocomposite fabricated via friction stir processing method”, Journal of Materials Science and Engineering: A, Vol. 559, 2013, pp. 549-557.

[11]    Zahmatkesh, B., Enayati, M., H., “A novel approach for development of surface nanocomposite by friction stir processing”, Journal of Materials Science and Engineering: A, Vol. 527, 2010, pp. 6734-6740.

[12]    Rejil, C., M., Dinaharan, I., Vijay, S., J., and Murugan, N., “Microstructure and sliding wear behavior of AA6360/(TiC+B₄C) hybrid surface composite layer synthesized by friction stir processing on aluminum substrate”, Journal of Materials Science and Engineering: A, Vol. 552, 2012, pp. 336-344.

[13]    Morisada, Y., Fujii, H., Nagaoka, T., and Fukusumi, M., “Effect of friction stir processing with SiC particles on microstructure and hardness of AZ31”, Journal of Materials Science and Engineering: A, Vol. 433, 2006, pp. 50-54.

[14]    Najafi, M., Nasiri, A., M., and Kokabi, A., H., “Microstructure and hardness of friction stir processed AZ31 with SiC”, International Journal of Modern Physics B, Vol. 22, 2008, pp. 2879-2885.

[15]    Asadi, P., Faraji, G., and Besharati, M., K., “Producing of AZ91/SiC composite by friction stir processing (FSP)”, International Journal of Advanced Manufacturing Technology, Vol. 51, 2010, pp. 247-260.

[16]    Asadi, P., Faraji, G., Masumi, A., and Besharati, M., K., “Experimental Investigation of Magnesium-Base Nanocomposite Produced by Friction Stir Processing: Effects of Particle Types and Number of Friction Stir Processing Passes”, Journal of Metallurgical and Materials Transaction A, Vol.42, 2011, pp. 2820-2832.

[17]    Sun., K., Shi, Q., Y., Sun, Y., J., and Chen, G., Q., “Microstructure and mechanical property of nano-SiCp reinforced high strength Mg bulk composites produced by friction stir processing”, Journal of Materials Science and Engineering: A, Vol. 547, 2012, pp. 32-37.

[18]    Hung, F. Y., Shih, C. C., Chen, L. H., and Lui, T. S., “Microstructures and high temperature mechanical properties of friction stirred AZ31–Mg alloy”, Journal of Alloys and Compounds, Vol. 428, 2007, pp. 106-114.

[19]    Jiang, Y., Yang, X., Miura, H., and Sakai, T., “Nano-SiO₂ Particles Reinforced Magnesium alloy produced by friction stir processing”, Journal of Review Advanced Material Science, Vol. 33, 2013, pp. 29-32.

[20]    Ma, Z., Y., Sharma, S., R.,and  Mishra, R., S., “Effect of multiple-pass friction stir processing on microstructure and tensile properties of a cast aluminum–silicon alloy”, Journal of Scripta Materialia, Vol. 54, 2006, pp. 1623-1626.

[21]    Gandra, J., Miranda, R., M., and Vilaça, P., “Effect of overlapping direction in multipass friction stir processing”, Journal of Materials Science and Engineering: A, Vol. 528, 2011, pp. 5592-5599.

[22]    Chang, C., I., Du, X., H., and Huang, J., C., “Achieving ultrafine grain size in Mg–Al–Zn alloy by friction stir processing”, Journal of Scripta Materialia, Vol. 57, 2007, pp. 209-212.

[23]    Nascimento, F., Santos, T., Vilaça, P., Miranda, R., M., and Quintino, L., “Microstructural modification and ductility enhancement of surfaces modified by FSP in aluminium alloys”, Journal of Materials Science and Engineering: A, Vol. 506, 2009, pp. 16-22.

[24]    Liu, Z., Y., Xiao, B., L., Wang, W., G., and Ma, Z., Y., “Singly dispersed carbon nanotube/aluminum composites fabricated by powder metallurgy combined with friction stir processing”, Journal of Carbon, Vol. 50, 2012, pp. 1843-1852.

[25]    Morisada, Y., Fujii, H., Nagaoka, T., and Fukusumi, M., “MWCNTs/AZ31 surface composites fabricated by friction stir processing”, Journal of Materials Science and Engineering: A, Vol. 419, 2006, pp. 344-348.

[26]    Izadi, H., Gerlich, A., P., “Distribution and stability of carbon nanotubes during multi-pass friction stir processing of carbon nanotube/aluminum composites”, Journal of Carbon, Vol. 50, 2012, pp. 4744-4749.

[27]    Chawla, N., Shen, Y. L., “Mechanical Behavior of Particle Reinforced Metal Matrix Composites”, Journal of Advanced Engineering Materials, Vol. 3, 2001, pp. 357-370.