نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد، مهندسی معدن و متالورژی، دانشگاه یزد، یزد، ایران

2 دانشیار، مهندسی معدن و متالورژی، دانشگاه یزد، یزد، ایران

چکیده

در این پژوهش تولید کامپوزیتAl/(Al2O3+AlxVy+AlaNib) به روش فعال سازی مکانیکی- حرارتی، در سیستم Al,V2O5,NiO مورد مطالعه قرار گرفت. بدین منظور مخلوط پودرهای Al,V2O5,NiO با دو نسبت وزنی مختلف(P0: Al-18.9 V2O5-7.9NiO و P1: Al-13.3V2O5-5.6NiO) تحت آسیاکاری و سپس تراکم قرار گرفتند. جهت بررسی دماهای وقوع تحولات فازی از آنالیز حرارتی افتراقی استفاده شد. نمونه های خام با توجه به دمای پیک واکنش ها در آنالیز حرارتی افتراقی، تفجوشی شدند. نمونه‌های خام P0 در دماهای 725،770 و 950 درجه سانتیگراد و نمونه های خام P1 در دماهای 725، 830 و 960 درجه سانتیگراد حرارت داده شدند. نتایج آنالیز XRD و بررسی ریزساختاری پس از تفجوشی نمونه ها در دمای 960 نشان داد که فازهای Al3V,Al23V4,α-Al2O3,Al2V3 در هر دو نمونه به عنوان تقویت کننده تشکیل شده است. با این تفاوت که در نمونه P0، فاز AlNi و در نمونه P1 فاز Al4Ni3 وجود دارد. بررسی های سختی و چگالی نیز نشان دهنده افزایش این دو پارامتر با افزایش درجه حرارت پخت و افزایش درصد تقویت کننده می‌باشد. مقادیر سختی و چگالی در نمونه P0 نسبت به P1 به دلیل وجود ترکیبات بین فلزی بیشتر، بیشتر می‌باشد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Fabrication and phases study in Al/(Al2O3+AlxVy+AlaNib) in situ composite

نویسندگان [English]

  • fatemeh mirarabshahi 1
  • Alireza Mashreghi 2

1 Department of Mineral and Material Engineering, Yazd University, Yazd, Iran

2 Department of Mineral and Material Engineering, Yazd University, Yazd, Iran

چکیده [English]

In present study, production of Al/(Al2O3+AlxVy+AlaNib) composite in Al-V2O5-NiO system with thermomechanical activation method has been investigated. For this purpose, the mixing of Al, V2O5 and NiO powders with two different weight fraction (P0: Al-18.9 V2O5-7.9NiO, P1: Al-13.3V2O5-5.6NiO) were grinded and densification was occurred. Differential thermal analysis method was used to investigation of phase transitions. Heat treatments was conducted on the raw comperest silenderical samples due to the peak temperature of the reactions, P0 raw samples heated at temperatures of 725,770 and 950 °C and P1 raw samples at temperatures of 725, 830 and 960 °C. XRD analysis and the microstructure of the sintered samples at temperature of 960 showed that the phases Al3V, Al23V4, α-Al2O3, Al2V3 in both sample as reinforcement is formed.in this temperature. The difference between P0 and P1 samples is that in the P0, AlNi phase and in P1 Al4Ni3 phase formed. Studies also show that by increasing temperature we have increase in the hardness and density. In P0, hardness and density values in this sample where much more than of P1.

کلیدواژه‌ها [English]

  • In-Situ Composite
  • reinforcement
  • Intermetallic And Ceramic Compounds
  • Combustion synthesis
[1] Razavi Hesabi, Z. Simchi, A. and Reihani, S. M. S., "Structural Evolution during Mechanical Milling of Nanmetric and Micrometric Al2O3 Reinforced Al Matrix Composites", Materials Science and Engineering A, Vol. 428, pp.159-168, 2006.
[2] Durai, T. G. and Das, K., "Synthesis and Characterization of Al Matrix Composites Reinforced by in Situ Alumina Particulates", Materials Science and Engineering A, Vol. 445-446, pp. 100-105, 2007.
[3] Torralba, J. M. Velasco, F. and Costa, C. E., "Mechanical Behavior of The Interphase Between Matrix and Reinforcement of Al 2014 Matrix Composites Reinforced With (Ni3Al)p", composites, Composites Part A: Applied Science and Manufacturing, Vol. 33, pp. 427-434, 2002.
[4] Schaffer, G. B. and Hall, B. J., "The Influence of The Atmosphere on The Sintering of Aluminum", Metallurgical and Materials Transactions A, Vol. 33, pp. 3279-3284, 2002.
[5] Yang, B. Chen, G. and Zhang, J., "Effect of Ti/C Additions on the Formation of Al3Ti of in Situ TiC/Al Composites", Materials and Design, Vol. 22, pp. 645-650, 2001.
 [6] Zhao, D. G. Liu, Pan, X. F. and Y. C. Bian, "Microstructure and Mechanical Properties of in Situ Synthesized (TiB2+Al2O3)/Al–Cu Composites", Journal of Materials Processing Technology, Vol. 189, pp. 237–241, 2007.
[7] Zhou, Y. Yu, Z. Zhao, N., "Microstructure and Properties of in Situ Generated MgAl2O4 Spinel Whisker Reinforced Aluminum Matrix Composites", Materials and Design, Vol. 46, pp. 724–730, 2013.
[8] Zheng, R. and Yang, H., "Microstructure and Mechanical Properties of Aluminum Alloy Matrix Composites Reinforced With Fe-Based Metallic Glass Particles", Materials and Design, Vol. 53, pp. 512–518, 2014.
[9] Zhang, L. Gan, G. S. and Yang, B., "Microstructure and Property Measurements on in Situ TiB2/70Si–Al Composite for Electronic Packaging Applications", Materials and Design, Vol. 36, pp. 177–181, 2012.
[10] Lekatou, A. Karantzalis, A. E. and Evangelou, A., "Aluminium Reinforced by WC and TiC Nanoparticles (ex-situ) and Aluminide Particles (in-situ): Microstructure Wear and Corrosion Behavior", Materials and Design, Vol. 65, pp. 1121-1135, 2015.
[11] Zhong-Chun, C. Takenobu, T. and Keisuke, I., "Microstructural Evolution of Reactive-Sintered Aluminum Matrix Composites", Composites Science and Technology, Vol. 68, pp. 2245–2253, 2008.
 [12] Woo, K. Kim, J. and Kwon, E., "Fabrication of Al Matrix Composite Reinforced With Submicrometer- Sized Al2O3 Particles Formed by Combustion Reaction Between HEMM Al and V2O5 Composite Particles During Sintering" Metals and Materials International, Vol. 16, pp. 213-218, 2010.
[13] Mousavian, R. T. Sharafi, S. and Shariat, M. H., "Microwave-Assisted Combustion Synthesis in a Mechanically Activated Al–TiO2–H3BO3 System", International Journal of Refractory Metals and Hard Materials, Vol.29, pp. 281–288, 2011.
 [14] Rosenband, V. Torkar, M. and Gany, A., "Self-Propagating High-Temperature Synthesis of Complex Nitrides of Intermetallics", Intermetallics, Vol. 14, pp 551–559, 2006.
 [15] Wang, L. and Arsenault, R. J., "Interfaces in XD Processed TiB2/NiAI Composites", Metallurgical Transactions A, Vol.22A, pp. 3013-3018, 1991.
 [16] Dilip, J. J. S. Reddy, B. S. B. and Das, S., "Mechanical Thermal Synthesis of in Situ Al Based Hybrid Nanocomposites in Al–Ni–Ti–O System", Journal of Alloys and Compounds, Vol. 490, pp. 103–109, 2010.
 [17] Ai, T. T., "Microstructures and Mechanical Properties of in-Situ Al2O3/TiAl Composites by Exothermic Dispersion Method", Acta Metallurgica Sinica, Vol. 21, pp. 437-443, 2008.
 [18] Ivanov, E. and et al., "Synthesis of Nickel Aluminides by Mechanical Alloying", Materials Letters, Vol. 7, pp. 51-54, 1988.
 [19]. Anvari, S. Z, Karimzadeh, F. and Enayati, M. H., "Synthesis and Characterization of NiAl–Al2O3 Nanocomposite Powder by Mechanical Alloying", Journal of Alloys and Compounds, Vol. 477, pp. 178-181, 2009.
[20] Yazdian, N. Karimzadeh, F. and Enayati, M. H., "In-Situ Fabrication of Al3V/Al2O3 Nanocomposite through Mechanochemical Synthesis and Evaluation of Its Mechanism", Advanced Powder Technology, Vol. 24, pp. 106-112, 2013.
[21] Omran, A. N. M., "Fabrication and Characterization of Al-Based In situ Composites Reinforced by Al3V Intermetallic Compounds", Journal of Scientific Research, pp. 26-34, 2014.
[22] Ashnagar, M., "The Study of Reaction Mechanism, Microstructure and Mechanical Properties of in-Situ Composite Produced in Al-V2O5 System", Journal of Metallurgy and Science Engineering, Vol. 27, No 1, pp 51-64, 2016. (In Persian)
[23] Ashnagar, M., "Production of Al/ (Al2O3+Alxvy) Composite", Journal of Science and Ceramic Engineering, Vol. 2, No 3, pp 57-72, 2014. (In Persian)
[24] Delgado, J., "Standard Test Method for Water Absorption, Bulk Density, Apparent Porosity, and Apparent Specific Gravity of Fired Whiteware Products", ASTM C373-88, 2006.
[25] Zhu, H. and et al., "The Reaction Mechanism and Mechanical Properties of The Composites Fabricated in an Al-ZrO2-C System", Materials Science and Engineering A, Vol. 527, pp. 6178-6183, 2010.
[26] Metals Handbook, American Society for Metals, Vol. 3, p 282 and 1262. 1992.
[27] Mirarabshahi, F., "Investigation of Reaction Mechanism, Structure and Mechanical Properties of the in-Situ Composites Produced in Al-V2O5-NiO System", Journal of Fundamental Metal For Engineering, Vol 35, No 4, pp 69-81, 2017. (In Persian)
[28] Yang, H. Mccormic, P. G., "Mechanochemical reduction of V2O5", Journal of solid state chemistry, Vol. 110, pp. 136-141, 1994.
[29] Sahra Nejad, N., "Study Important Factors for Production and Properties of Al-Al2o3 Composite", Journal of Iran Ceramic, Vol 18, pp 35-57, 2010. (in Persian)