Bilyalı Dövme İşleminin Alumıx 431 Toz Malzemeler Üzerindeki Etkisi

Year 2010, Volume: 25 Issue: 1, 83 - 93, 25.07.2016

Oğur İynen Abdul Kadir Ekşi Durmuş Ali Bircan

Abstract

In this work, Alumix 431 metal powders have been chosen for study due to widely used in the industrial applications. First, Alumix 431 powders were pressed at 400 MPa pressure and room temperature (RT). Then, pressed specimens were sintered at 600 ºC and 620 ºC temperatures for 1h separately. In order to examine effects of sintering operation to density, densities have been measured in per different temperature. After sintering operation, a group of specimen was shot peened in 12A and 16A intensities. To investigate mechanical properties of sintered and shot peened Alumix 431 powders, tensile and fatigue tests were performed.

Keywords

Powder metallurgy, Alumix 431, Sintering, Shot peening, Fatigue strength

Effect Of Shot Peening Process On Alumix 431 Powder Materials

Abstract

Bu çalışmada, endüstriyel uygulamalarda yaygın olarak kullanılan Alumix 431 tozları seçilmiştir. Alumix 431 tozları 400 MPa basınç ve oda sıcaklığında sıkıştırılmıştır. Daha sonra, sıkıştırılan numuneler 600 ºC ve 620 ºC sıcaklıklarda 1 saat sinterlenmiştir. Sinterleme işleminin yoğunluğa etkisini araştırmak için, sinterlenmiş numunelerin yoğunlukları farklı sıcaklıklara göre her biri ayrı olarak ölçülmüştür. Sinterleme işleminden sonra, bir grup numuneye 12A ve 16A yoğunluklarında bilyalı dövme işlemi uygulanmıştır. Sinterlenme ve bilyalı dövme yapılmış Alumix 431 toz malzemelerinin mekanik özelliklerini incelemek için çekme ve yorulma testleri yapılmıştır.

Keywords

Toz metallurjisi, Alumix 431, Sinterleme, Bilyalı dövme, Yorulma dayanımı

References

• 1. Schaffer, G. B., Huo, and S. H., ‘On Development of Sintered 7xxx Series Aluminum Alloys’, Powder Metallurgy, Vol. 42, No. 3, pp. 219-226, 1999.
• 2. Iynen, O., ‘The Influence of Sintering and Shot peening Processes on Alumix 431 Powder Metallurgy’, Master Thesis, Cukurova University, Instute of Natural and Applied Sciences, 2009.
• 3. Eksi, A. K., Lipp, K., Sonsino, C. M., and Velt, G., ‘Static and Fatigue Properties of the Cold and Warm Compacted Sintered Aluminium Alloy Alumix 431’, Wiley Interscience, Materialwissenschaft und Werkstofftechnik, Vol. 37, No.5, pp. 374-382, 2006.
• 4. Mahagaonkar, S.B., Brahmankar, P.K., and Seemikeri, C.Y., ‘Effect on Fatigue Performance of Shot peened Components: An Analysis Using DOE Technique’, International Journal of Fatigue, Elsevier, Vol.31, pp. 693–702, 2009 . 5. Brahmankar, P. K, Mahagaonkar, S. B, and Seemikeri, C. Y, ‘Shot peening: State of - The Art. In: Proceedings of The International Conference on Advances in Materials and Material Processing’, pp. 296–303, 2006.
• 6. Tekeli, S., ‘Enhancement of Fatigue Strength of SAE 9245 Steel by Shot peening’, Elsevier, Materials Letters, Vol. 57, pp. 604-608, 2002.
• 7. Sarıtas, S., Dogan, C., and Varol, R., ‘Improvement of Fatigue properties of PM Steels by Shot peening’, Powder Metallurgy, Vol. 42, No. 2, 1999.
• 8. Eksi, A., Veltz, G., Petzoldt, F., Lipp, K., and Sonsino, C. M., ‘Tensile and Fatigue Properties of Cold and Warm Compacted Alumix 431 Alloy’, Powder Metallurgy, Vol. 47, No. 1, 2004.
• 9. Basaran, A., Varol, R., Pirge, G., Basturk, S., and Varol, H., ‘Investigation of The Shot peening Effect of Elevated Temperature on The Fatigue Strength of Cubber Added PM Steels’, Prooceedings of 8th International Fracture Conference 7-9 November 2007, Istanbul/Turkey.
• 10. Yılmaz, S. S., Unlu, B. S., and Varol, R.,’Borlama ve Bilyalı Dövmenin Demir Esaslı TM Malzemelerde Yorulma Davranışına Etkisi’, Makine Teknolojileri Elektronik Dergisi, Vol. 1, pp. 61-68, 2007.
• 11. Pavel, C., Brandusan, L., and Muresan, R., ‘The Influence of Shot peening on The Fatigue Properties of Powder Materials’, 3th International Powder Metallurgy Conference, Turkish Powder Metallurgy Association, pp. 698-701, Gazi University, September 4-8, 2002, Ankara/Turkey.
• 12. Barry, N., Hainsworth, S. V., and Fitzpatrick, M. E., ‘Effect of Shot peening on The Fatigue Behaviour of Cast Magnesium A8’, Materials Science and Enginering A, Elsevier, Vol. 507, pp. 50-57, 2009
• 13. Dulek, E., Orman, Ş., Karataş, Ç., and Sarıtaş, S.,’Effects of Shot peening on The Fatigue Strength of AISI 1020 Steel and Investigation of Created Residual Stresses by Layer Removal Technique’, Gazi University Journal of Faculty of Enginering and Architecture, Vol. 20, No. 3, pp. 289-295, 2005.
• 14. Varol, R., Tunay, R. F., ‘AA2024-T4 Aluminium Alaşımının Yorulma Dayanımına Ilık Bilyalı Dövme İşleminin Etkisi’, TBMMOB Makina Mühendisleri Odası Konya Şubesi Makine Tasarım ve İmalat Teknolojileri Kongresi, 02-03 Kasım , MATİT, 2001.
• 15. Dilek, M., ‘Mechanical Properties of Different Aluminum Alloys Joined By Friction Stir Welding’, Master Thesis, Cukurova University, Instute of Natural and Applied Sciences, 2006.
• 16. Iynen, O., Eksi, A. K., Bircan, D. A., and Dilek, M., ‘Design and Investigation of Improvement of Fatigue Properties of The Machine Elements Produced by Powder Metallurgy’, 5 th International Advanced Technologies Symposium (IATS’09), May 13-15, pp. 76, 77, 2009, Karabuk, Turkey.