تولید کامپوزیت هیبریدی Al/AlMg-Al2O3-Si3N4 به روش ریخته گری و بررسی تاثیر نانوذرات Si3N4

نوع مقاله : مقاله پژوهشی

نویسندگان

• مسعود مشرفی فر ¹
• مهران زارع ²

¹ استادیار دانشکده ی مهندسی معدن متالورژی دانشگاه یزد

² کارشناسی ارشد، دانشگاه صنعتی اصفهان، دانشکده ی مهندسی مواد

چکیده

امروزه استفاده از نانوذرات در کامپوزیت‌های زمینه آلومینیومی به دلیل اثرات برتر آن‌ها بر خواص مکانیکی و فیزیکی مورد توجه محققان قرار گرفته است. به علت ترشوندگی ضعیف نانوذرات توسط فلز زمینه حین ریخته‌گری و نسبت بالای سطح به حجم نانوذرات رسیدن به توزیع یکنواخت ذرات درون زمینه مشکل است. همچنین در فرآیند ساخت، نانوذرات تمایل به تشکیل توده‌های ذره‌ای به شکل خوشه‌ای دارند. توده‌ای شدن نانوذرات اثرات نامطلوبی بر خواص مکانیکی از جمله روی استحکام و انعطاف‌پذیری کامپوزیت دارد. در این پژوهش از ریخته‌گری گردابی برای تهیه نمونه‌های کامپوزیتی تقویت شده با درصدهای مختلف مخلوط پودری حاوی نانوذرات Si3N4، Al2O3 و AlMg استفاده شد. به منظور مشخصه‌یابی کامپوزیت ساخته شده از بررسی‌های ریزساختاری و خواص مکانیکی و فازی بر روی نمونه‌ها استفاده شد. بررسی‌های میکروسکوپی الکترونی گسیل میدانی بر روی مخلوط پودری آلومینیوم و نانو ذرات نشان داد که با انجام فرایند آسیاکاری، ذرات پس از آسیا‌کاری، در ابعاد نانومتری می‌باشند. نتایج آزمون‌های مکانیکی و مشاهدات ریزساختاری با استفاده از میکروسکوپ نوری و الکترونی روبشی درصد بهینه پودر تقویت‌کننده برای افزودن به مذاب آلومینیوم 5/0 درصد وزنی تشخیص داده شد. در نهایت، مشخص شد با افزایش استحکام به وسیله‌ی اضافه کردن مخلوط پودری آسیاکاری شده، درصد ازدیاد طول نسبت به فلزپایه به میزان قابل توجهی کاهش پیدا نکرده است.

کلیدواژه‌ها

• نانوکامپوزیت
• ریخته‌گری گردابی
• خواص مکانیکی
• Si3N4

20.1001.1.22285946.1398.9.35.10.2

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عنوان مقاله [English]

Effect of nano Si3N4، Al2O3 و AlMg and cold rolling process on the microstructural and mechanical properties of AL-6061alloy

نویسندگان [English]

• Masoud Moshrefifar ¹
• Mehran Zare ²

¹ Department of Mining and Metallurgical Engineering, Yazd University, Yaz d, Iran

² Department Metallurgical Engineering, Isfahan University of Technology, Isfahan, Iran

چکیده [English]

Today, the use of nanoparticles in aluminum composite materials has attracted researchers due to their superior effects on mechanical and physical properties. Due to the poor wettability of the nanoparticles by the metal during the casting and the high ratio of the surface to the volume of the nanoparticles, it is difficult to achieve uniform distribution of the particles in the interior. In the manufacturing process, nanoparticles tend to form cluster particle masses. The mass of nanoparticles has undesirable effects on mechanical properties, including strength and resilience of the composite. In this study, stir casting process for composite manufacturing with different amount of mixed powder containing of nano Si3N4, AlMg and Al2O3 was used. For better distribution of particle reinforcement, cold rolling was used. In order to characterize the composite, microstructural, mechanical and phases studies properties were used. FESEM tests on mixture of aluminum and nanoparticles showed that after ball milling, particles are in nanometric size. Mechanical and optical result show that optimum of reinforcement is 0.5 % w.t. It is notable that the higher yield stress of the composite samples does not reduce the elongation significantly, when compared to monolithic aluminum.

کلیدواژه‌ها [English]

• Nanoparticles
• stir casting
• mechanical properties
• Si3N4

مراجع

References:
1- Khademian, M., "Investigation on effect of casting temperature and mixing time on microstructure and mechanical properties of Al-B4C nano composites by vortex method," M. Sc. Thesis, Faculty of Materials & Manufacturing Processes, Malek Ashtar University, Tehran, 2013.
2- Onoro, J., Salvador, M., and Cambronero, L., "High-temperature mechanical properties of Aluminium alloys reinforced with boron carbide particles," Materials Science and Engineering: A, Vol. 499, No. 1, pp. 421-426, 2009.
3- Yazdani, A., and Salahinejad, E., "Evolution of reinforcement distribution in Al–B4C composites during accumulative roll bonding," Materials & Design, Vol. 32, No. 6, pp. 3137-3142, 2011.
4- Prabhu, B., Suryanarayana, C., and an, L., and Vaidyanathan, R., "Synthesis and characterization of high volume fraction
Al–Al2O3 nanocomposite powders by high-energy milling," Materials Science and Engineering: A, Vol. 425, No. 1, pp. 192-200, 2006.
5- Ozdemir, I., Ahrens, S., Mücklich, S., and Wielage, B., " Nanocrystalline Al–Al2O3p and SiCp composites produced by high-energy ball milling,", Materials Processing Technology, Vol. 205, No. 1, pp. 111-118, 2008.
6- Alizadeh, M., and Paydar, M. H., "Fabrication of nanostructure Al/SiCp composite by accumulative roll-bonding (ARB) process," Alloys and Compounds, Vol. 492, No. 1, pp. 231-235, 2010.
7- Mazahery, A., and Shabani, M. O., " Nano-sized silicon carbide reinforced commercial casting Aluminum alloy matrix: Experimental and novel modeling evaluation," Powder Technology, Vol. 217, pp. 558-565, 2012.
8- Abdoli, H., Asgharzadeh, H., and Salahi, E.,"Sintering behavior of Al–AlN-
Si3N به روش ریختهگری و بررسی تاثیر نانوذرات 4 Al/AlMg-Al2O3-Si3N 126 تولید کامپوزیت هیبریدی 4
nanostructured composite powder synthesized by high-energy ball milling," Alloys and Compounds, Vol. 473, No. 1, pp. 116-122, 2009.
9- Abdoli, H., Salahi, E., Farnoush, H., and Pourazrang, K., "Evolutions during synthesis of Al–AlN-nanostructured composite powder by mechanical alloying," Alloys and Compounds, Vol. 461, No. 1, pp. 166-172, 2008.
10- Sadeghian, Z., Enayati, M. H., and Beiss, P., "In situ production of Al–TiB2 nanocomposite by double-step mechanical alloying," materials science, Vol. 44, No. 10, pp. 2566-2572, 2009.
11- Sivaprasad, K., and Babu, S., Natarajan, S., Narayanasamy, R., Kumar, B. A., and Dinesh, G., "Study on abrasive and erosive wear behaviour of Al6063/TiB2 in situ composites," Materials Science and Engineering: A, Vol. 498, No. 1, pp. 495-500, 2008.
12- Komarasamy, M., Mishra, R.S., Baumann, J.A., Grant, G., and Hovanski, Y., "Processing, microstructure and mechanical property correlation in Al‐B4C surface composite produced via friction stir processing," Friction Stir Welding and Processing VII, pp. 39-46, 2013.
13- Varol, T., and Canakci, A., "Synthesis and characterization of nanocrystalline Al 2024–B4C composite powders by mechanical alloying," Philosophical Magazine Letters, No. ahead-of-print, pp. 1-7, 2013.
14- Son, H., Kim, T., Suryanarayana, C., and Chun, B., " Homogeneous dispersion of graphite in a 6061 Aluminum alloy by ball milling," Materials Science and Engineering: A, Vol. 348, No. 1, pp. 163-169, 2003.
15 - نفیسه سادات مدقن و محمد مزینانی.، " تولید مادهی
مرکب زمینه آلومینیم با نانوذرات 3O2Al به روش ریخته-
گری گردابی و بررسی تاثیر فرآیند نورد سرد بعدی بر
ریزساختار و خواص مکانیکی آن"، مجله مواد نوین، جلد
5، شماره 3، بهار 1394 .
16- Habibnejad, M., "Tribological behavior of pure Mg and AZ31 Magnesium alloy strengthened by Al2O3 nano-particles", Wear, Vol. 268, pp.405–412, 2010.
17- Habibnejad, M., "Enhanced properties of Mg-based nano-composites reinforced with Al2O3 nanoparticles", Materials Science and Engineering A, Vol. 519, pp.198–203, 2009.
18- Mazahery, A., "Development of high-performance A356/nano-Al2O3 composites", Materials Science and Engineering A, Vol. 518, pp.61–64, 2009.
19- Dehghan Hamedan, A., Shahmiri, M., "Production of A356–1 wt% SiC nanocomposite by the modified stir casting method", Materials Science and Engineering A, Vol. 556, pp.921-926, 2012.
20- Hashim, J., Looney, L., and Hashmi, M.S.J., "Metal matrix composites: production by the stir casting method," Journal of Materials Processing Technology, 92–93, pp. 1–7. 1999.
21- Brabazon, D., Browne, D.J., and Carr, A.J., "Mechanical stir casting of Aluminum Alloys from the mushy state: process, microstructure and mechanical properties," Materials Science and Engineering A, 326, pp. 370–381. 2002.
127 مجله مواد نوین/ جلد 9/شماره 3 / بهار 1398
22- Babu, N.H., Tzamtzis, S., Barekar, N., Patel, J.B., and Fan, Z.,"Fabrication of matrix composites under intensive shearing," Composites part A, 40, pp. 144-151. 2009.
23- Mula, S., Padhi, P., Pabi, S.C., and Gosh, S., "On structure and mechanical properties of ultrasonically cast- %2 Al2O3 nanocomposite", Materials Research Bulletin, 44, pp. 1154–1160. 2009.
24- Rosso, M.,"Ceramic and metal matrix composites: Routes and properties", Journal of Materials Processing Technology, Vol. 175, pp. 364–375, 2006.
25- Hari Babu, N., "Fabrication of metal matrix composites under intensive shearing", Solid State Phenomena, Vols. 141-143, pp. 373-378, 2008.
26- particulate metal matrix composite produced by advanced shear technology", Journal of Materials Engineering and Performance, Vol. 18(9), pp. 1230-1240, 2009.
27- Tzamtzis, S., "Processing of advanced Al/SiC particulate metal matrix composites under intensive shearing – A novel Rheo-process", Composites, Part A, Vol. 40, pp. 144–151, 2009.
28- Hajihashemi, M., "Journal of advanced materials and processing," Vol. 1, No. 3, pp. 19-26, 2013. Brisbane, Australia.
29- Stefanescu, D., "Behavior of ceramic particles at the solid/liquid metal interface in metal matrix composites," Metallurgical Transaction, Vol. 19A (11), pp. 2847–55, 1988.
30 - دهقان همدان، ع. و ، شاهمیری، م.، "تأثیر روش
ساخت و نحوه افزودن نانوذرات کاربید سیلیسیم به مذاب
بر روی ریزساختار و خواص مکانیکی نانوکامپوزیت
ریختگی A356/1%wt. SiC "، ، فرآیندهای نوین در
مهندسی مواد، دوره 7 ، شماره 1 ، 1392 .
31- Dehghan Hamedan, A., and Shahmiri, M., "Synthesis and characterization of Al–SiC nanocomposite powders with high quantity of SiC prepared by high-energy ball milling," 2nd International congress of nanothechnology, Iran, Tabriz, 2008.
32- Zhang, Z., Chen, D.L., "Contribution of Orowan strengthening effect in particulate-reinforced metal matrix nanocomposites", Materials Science and Engineering: A, Vol. 483, pp. 148–152, 2008.
33- Kalifa, W., Samuel, F.H., and Gruzleski, J.E., “Iron Intermetallic Phases
in the Al Corner of the Al-Si-Fe System”, Metallurgical and Materials Transactions A, 34, p. 807. 2003.
34- Taylor, J. A., “The Effect of Iron in Al-
Si Casting Alloys”, Cooperative Research Centre for Cast Metals Manufacturing (CAST), University of Queensland