Characterization of mechanically alloyed and pressureless sintered Al-7 wt% Si-2 wt% LaB6-2 wt% (MoSi2, WSi2) hybrid composites
作者： Emre Tekoğlu , Yakup Yürektürk , Duygu Ağaoğulları , Didem Ovalı , Sıddıka Mertdinç
DOI: 10.1016/J.APT.2019.08.010
关键词: Microstructure 、 Homogeneous distribution 、 Silicide 、 Composite material 、 Eutectic system 、 Ball mill 、 Particle size 、 Matrix (chemical analysis) 、 Characterization (materials science) 、 Materials science
摘要: Abstract The purpose of this research is to investigate the dual effect silicide (MoSi2 or WSi2) and LaB6 reinforcing particles on microstructural mechanical properties Al-7 wt% Si (Al7Si) matrix. Hypoeutectic Al7Si blends prepared from elemental Al powders were mechanically alloyed (MA’d) for 12 h in a planetary ball mill (at 300 rpm). Afterwards, 2 wt% reinforcements with various particle size distributions (micron, bimodal, submicron) separately added into these MA’d together particles. Powders having compositions Al7Si, Al7Si-2 wt% LaB6, LaB6-2 wt% MoSi2 WSi2 milled 30 min using high-energy 1200 rpm) order obtain homogeneous distribution throughout microstructure. Compositional, characterization studies performed sintered samples. results showed that milling ensured micron-sized within matrix rather than those bimodal submicron-sized ones. Micron-sized reinforced hybrid composites displayed dramatically higher hardness wear resistance different striking point study was remarkably compared un-reinforced only LaB6-reinforced As conclusion, extremely promising properties.
sci-hub.se 参考文章(51)
Özge Balcı, Duygu Ağaoğulları, Didem Ovalı, M. Lütfi Öveçoğlu, İsmail Duman, In situ synthesis of NbB2–NbC composite powders by milling-assisted carbothermal reduction of oxide raw materials Advanced Powder Technology. ,vol. 26, pp. 1200- 1209 ,(2015) , 10.1016/J.APT.2015.06.001
Jaswinder Singh, Amit Chauhan, Characterization of hybrid aluminum matrix composites for advanced applications – A review Journal of materials research and technology. ,vol. 5, pp. 159- 169 ,(2016) , 10.1016/J.JMRT.2015.05.004
Ege Anıl Diler, Amir Ghiami, Rasim Ipek, Effect of high ratio of reinforcement particle size to matrix powder size and volume fraction on microstructure, densification and tribological properties of SiCp reinforced metal matrix composites manufactured via hot pressing method International Journal of Refractory Metals & Hard Materials. ,vol. 52, pp. 183- 194 ,(2015) , 10.1016/J.IJRMHM.2015.06.008
Z. F. Zhang, L. C. Zhang, Y. W. Mai, Wear of ceramic particle-reinforced metal-matrix composites Journal of Materials Science. ,vol. 30, pp. 1967- 1971 ,(1995) , 10.1007/BF00353019
John S Benjamin, Mechanical alloying — A perspective Metal Powder Report. ,vol. 45, pp. 122- 127 ,(1990) , 10.1016/S0026-0657(10)80124-9
Özge Balcı, Duygu Ağaoğulları, Hasan Gökçe, İsmail Duman, M. Lütfi Öveçoğlu, Influence of TiB2 particle size on the microstructure and properties of Al matrix composites prepared via mechanical alloying and pressureless sintering Journal of Alloys and Compounds. ,vol. 586, ,(2014) , 10.1016/J.JALLCOM.2013.03.007
Z. Fan, X. Fang, S. Ji, Microstructure and mechanical properties of rheo-diecast (RDC) aluminium alloys Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 412, pp. 298- 306 ,(2005) , 10.1016/J.MSEA.2005.09.001
P. Ravindran, K. Manisekar, R. Narayanasamy, P. Narayanasamy, Tribological behaviour of powder metallurgy-processed aluminium hybrid composites with the addition of graphite solid lubricant Ceramics International. ,vol. 39, pp. 1169- 1182 ,(2013) , 10.1016/J.CERAMINT.2012.07.041
J.C. Walker, I.M. Ross, W.M. Rainforth, M. Lieblich, TEM characterisation of near surface deformation resulting from lubricated sliding wear of aluminium alloy and composites Wear. ,vol. 263, pp. 707- 718 ,(2007) , 10.1016/J.WEAR.2006.12.043
Maofeng Zhang, Liang Yuan, Xiaoqing Wang, Hai Fan, Xuyang Wang, Xueying Wu, Haizhen Wang, Yitai Qian, A low-temperature route for the synthesis of nanocrystalline LaB6 Journal of Solid State Chemistry. ,vol. 181, pp. 294- 297 ,(2008) , 10.1016/J.JSSC.2007.12.011