Hamidreza Ghandvar1, Tuty Asma Abu Bakar This email address is being protected from spambots. You need JavaScript enabled to view it.1, and Mohd Hasbullah Idris1
1Department of Materials, Manufacturing and Industrial Engineering, School of Mechanical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia (UTM), 81310, Johor Bahru, Malaysia
Received: April 14, 2021 Accepted: May 31, 2021 Publication Date: October 11, 2021
Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.
Microstructural alteration and tensile properties of Al-15% Mg2Si composite specimens was examined after addition of gadolinium (Gd) and conducting solution heat treatment. Various percentages of gadolinium (0.5, 1.0, 2.0 and 5.0 wt. % Gd) were added to the composite Al-15% Mg2Si composite. The specimens then solutionized at 500 °C for 4h followed by quenching. The results showed that regular morphology and small size of primary Mg2Si particles is achieved after addition of 1.0 wt.% Gd compared to untreated composite. Due to solutionizing effect, Mg2Si dissolution occurred which led to alter the morphology of primary Mg2Si particles to round shape. Tensile testing results revealed that enhancement in UTS and El% values owns to influence of both Gd addition and solution heat treatment on the Al-15% Mg2Si composite. The fracture surface of untreated composite depicted a cellular fracture, while the fracture surface of Gd treated and heat treated composite showed a ductile surface containing fine dimples, in which alteration of fracture mode is due to the role of Gd and heat treatment on microstructural modification, which results in reduction of potential sites for stress concentration and crack initiation areas.
[1] S. Amirkhanlou, R. Jamaati, B. Niroumand, and M. R. Toroghinejad, (2011) “Using ARB process as a solution for dilemma of Si and SiCp distribution in cast Al–Si/SiCp composites" Journal of Materials Processing Technology 211(6): 1159–1165. DOI: 10.1016/j.jmatprotec.2011.01.019.
[2] J. J. Moses, I. Dinaharan, and S. J. Sekhar, (2016) “Prediction of influence of process parameters on tensile strength of AA6061/TiC aluminum matrix composites produced using stir casting" Transactions of nonferrous metals society of China 26(6): 1498–1511. DOI: 10.1016/S1003-6326(16)64256-5.
[3] A. Vajd and A. Samadi, (2019) “Centrifugal casting of in-situ Al-Mg2Si (1-x) Snx composites: a study of radial segregation" International Journal of Cast Metals Research 32(2): 114–121. DOI: 10.1080/13640461.2018.1558561.
[4] M. N. Amado and F. Daroqui, (2015) “Revision of the solvus limit of Al-Mg2Si pseudo binary phase diagram" Procedia Materials Science 8: 1079–1088. DOI: 10.1016/j.mspro.2015.04.171.
[5] F. Zainon, K. R. Ahmad, and R. Daud, (2016) “The effects of Mg2Si (p) on microstructure and mechanical properties of AA332 composite" Advances in materials Research 5(1): 55. DOI: 10.12989/AMR.2016.5.1.055.
[6] N. A. Nordin, S. Farahany, A. Ourdjini, T. A. A. Bakar, and E. Hamzah, (2013) “Refinement of Mg2Si reinforcement in a commercial Al–20% Mg2Si in-situ composite with bismuth, antimony and strontium" Materials characterization 86: 97–107. DOI: 10.1016/j.matchar.2013.10.007.
[7] M. Azarbarmas, M. Emamy, M. Alipour, and J. Rassizadehghani, (2011) “The effects of boron additions on the microstructure, hardness and tensile properties of in situ Al–15% Mg2Si composite" Materials Design 32(10): 5049–5054. DOI: 10.1016/j.matdes.2011.05.036.
[8] T. Liu, Y. Li, Y. Ren, and W. Wang, (2018) “The microstructure and mechanical characterization of Al-30% Mg2Si composite with Y inoculation addition" Materials Research Express 5(7): 76512. DOI: 10.1088/2053-1591/aad033.
[9] H. Ghandvar, M. H. Idris, N. Ahmad, and M. Emamy, (2018) “Effect of gadolinium addition on microstructural evolution andsolidification characteristics of Al-15% Mg2Si in-situ composite" Materials Characterization 135: 57–70. DOI: 10.1016/j.matchar.2017.10.018.
[10] Y.-M. Kim, S.-W. Choi, Y.-C. Kim, C.-S. Kang, and S.-K. Hong, (2018) “Influence of the precipitation of secondary phase on the thermal diffusivity change of Al-Mg2Si Alloys" Applied Sciences 8(11): 2039. DOI: 10.3390/app8112039.
[11] W. Jiang, X. Xu, Y. Zhao, Z.Wang, C.Wu, D. Pan, and Z. Meng, (2018) “Effect of the addition of Sr modifier in different conditions on microstructure and mechanical properties of T6 treated Al-Mg2Si in-situ composite" Materials Science and Engineering: A 721: 263–273. DOI: 10.1016/j.msea.2018.02.100.
[12] H. Ghandvar, M. H. Idris, and N. Ahmad, (2018) “Effect of hot extrusion on microstructural evolution and tensile properties of Al-15% Mg2Si-xGd in-situ composites" Journal of Alloys and Compounds 751: 370–390. DOI: 10.1016/j.jallcom.2018.04.131.
[13] L. Babout, Y. Brechet, E. Maire, and R. Fougeres, (2004) “On the competition between particle fracture and particle decohesion in metal matrix composites" Acta materialia 52(15): 4517–4525. DOI: 10.1016/j.actamat.2004.06.009.
[14] Y. Zheng, W. Xiao, S. Ge, W. Zhao, S. Hanada, and C. Ma, (2015) “Effects of Cu content and Cu/Mg ratio on the microstructure and mechanical properties of Al–Si–Cu–Mg alloys" Journal of Alloys and Compounds 649: 291–296. DOI: 10.1016/j.jallcom.2015.07.090.
[15] H.-Y. Wang, F. Liu, L. Chen, M. Zha, G.-J. Liu, and Q.-C. Jiang, (2016) “The effect of Sb addition on microstructures and tensile properties of extruded Al–20Mg2Si–4Cu alloy" Materials Science and Engineering: A 657: 331–338. DOI: 10.1016/j.msea.2016.01.063.
[16] Q. D. Qin, Y. G. Zhao, Y. H. Liang, and W. Zhou, (2005) “Effects of melt superheating treatment on microstructure of Mg2Si/Al–Si–Cu composite" Journal of alloys and compounds 399(1-2): 106–109. DOI: 10.1016/j.jallcom.2005.03.015.
We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.
