Motaharinezhad, M., Shahraki, S. (2016). Experimental Investigation of Nano-structured Aluminum Production Using Accumulative channel-die compression bonding (ACCB). Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9(4), 673-686.
Mohssen Motaharinezhad; Saeed Shahraki. "Experimental Investigation of Nano-structured Aluminum Production Using Accumulative channel-die compression bonding (ACCB)". Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9, 4, 2016, 673-686.
Motaharinezhad, M., Shahraki, S. (2016). 'Experimental Investigation of Nano-structured Aluminum Production Using Accumulative channel-die compression bonding (ACCB)', Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 9(4), pp. 673-686.
Motaharinezhad, M., Shahraki, S. Experimental Investigation of Nano-structured Aluminum Production Using Accumulative channel-die compression bonding (ACCB). Journal of Simulation and Analysis of Novel Technologies in Mechanical Engineering, 2016; 9(4): 673-686.
Experimental Investigation of Nano-structured Aluminum Production Using Accumulative channel-die compression bonding (ACCB)
1Islamic Azad University, South Tehran Branch, Young Researchers and Elite Club, Tehran, Iran.
2Faculty of Mechanical Engineering, Faculty of Engineering, University of Zabol
Abstract
In this paper, the Accumulative Channel-die Compression Bounding (ACCB) method is investigated as a new method of severe plastic deformation to produce Nano-crystalline bulk metals on the basis of pressing in a channel mold. Aluminum as One of the most usable metal in industry is processed using this method. Analyzing the processed samples show that after four passes of ACCB method, the ultimate strength of samples reaches to 120 from 60 Mpa. The grain sizes of samples reaches to 627 nm from 8-6µm in annealed phase after four passes of ACCB method. Also, the vicker's hardness of samples reaches to 51.8 from 20 HV after four passes. These changes consist of the increasing the hardness and strength of aluminum sample and achieving to the high ratio of strength to weight of sample can help us to better use this materials to fabricate less weight structures for using in automotive and airplane industry.
مطالعه تجربی تولید آلومینیوم نانو ساختار با استفاده از روش اتصال فشاری جمعی
Authors [Persian]
محسن مطهری نژاد, سعید شهرکی
Abstract [Persian]
در این مقاله روش اتصال فشاری تجمّعی که روش جدید تغییر شکل پلاستیک شدید برای تولید فلزات نانوساختار حجیم بر پایه فشردن در قالب کانالی است مورد مطالعه قرار می گیرد. این فرآیند بر روی یکی از پرکاربردترین فلزات در صنعت یعنی آلومینیوم انجام شده است. با بررسی و تحلیل نمونه‌ها مشخص شد که استحکام کششی نهایی پس ازچهار مرحله فرآیند به حدود 2 برابر نمونه آنیل شده افزایش یافته و از 60 به 123 رسیده است. ساختار اولیه با دانه‌های خشن μm6-8 به ساختاری با اندازه سلول های μm 2/1 در اولین پاس کرنش‌دهی، nm 627 بعد از پاس چهارم، تبدیل شده است. همچنبن سختی ویکرز نمونه ها پس از چهار پاس فرایند از 20 به 8/51 می رسد. این بهبود خواص از جمله افزایش استحکام و سختی و دستیابی به نسبت استحکام به وزن بالا می‌تواند به گسترش کاربرد این مواد جهت سبک سازی مؤثر سازه در صنایع خودروسازی و هواپیماسازی کمک شایانی نماید
[1] Shin D.H., Park J.J., Kim Y.S., Park K.T., Constrained groove pressing and its application to grain refinement of aluminum, Materials Science and Engineering A, Vol. 98, 2001, pp. 98-103.
[2] Gleiter H., Hansen N., Horsewell A., Leffers T., Lilholt H., Deformation of polycrystals: Mechanisms and microstructures. Roskilde, Denmark: Risø National Laboratory, 2000, pp. 15.
[3] Erb U., El-Sherik A.M., Palumbo G., Aust K.T., Synthesis, structure and properties of electroplated nanocrystalline materials, Nanostruct Mater, Vol. 2, 1993, pp. 383-390.
[4] Koch C.C., Cho Y.S., Nanocrystals by high energy ball milling, Nanostruct Mater, Vol. 1, 1992, pp. 207-212.
[5] Zhu Y.T., Lowe T.C., Langdon T.G., Performance and applications of nanostructured materials produced by severe plastic deformation, Scripta Materialia, Vol. 8, 2004, pp. 825-830.
[6] Valiev R.Z., Estrin Y., Horita Z., Langdon T.G., Zehetbauer M.J., Zhu Y.T., Producing bulk ultrafine-grained materials by severe plastic deformation, Overview Nanostructured Materials, Vol. 58, 2006, pp. 33–39.
[8] Saito Y, Tsuji N, Utsunomiya H, Sakai T, Hong RG. Scripta Mater, 1998, pp. 39-1221.
[9] Smirnova N. A, Levit V. I., Pilyugin V. I., Kuznetsov R. I., Davydova L. S., Sazonova V. A., Fiz Metal Metalloved, Vol. 61, 1986, pp. 1170–1177.
[10] Shin D.H., Park J.J., Kim Y.S., Park K.T., Constrained groove pressing and its application to grain refinement of aluminum, Materials Science and Engineering: A, Vol. 98, 2001, pp. 98-103.
[11] Shaarbaf M., Toroghinejad M.R., Nano-grained copper strip produced by accumulative roll bonding process, Materials Science and Engineering A, Vol. 473, 2008, pp. 28–33
[12] Yoon S.C., Krishnaiah A., Chakkingal U., Kim H.S., Severe plastic deformation and strain localization in groove pressing, Computational Materials Science, Vol. 43, 2008, pp. 641-645.
[13] Shirdel A., Khajeh A., Moshksar M.M., Experimental and finite element investigation of semi-constrained groove resisting process, Materials & Design, 2010, pp. 946-950.
[14] Estrin Y. and Necking H., A unified phenomenological description of work hardening and creep based on one-parameter models, Acta Mater, 1998, pp. 57-70.
Top