The Effects of Annealing Parameters on Earing for Aluminum Alloy

Öz

The aim of this study is to investigate the effect of annealing parameters on the earing problem in deep drawing of AA 1060 alloy. It is also objected to minimize the percent earing by changing annealing parameters. In experiments, AA 1060 aluminum sheets with 1,5 mm thickness were annealed at different conditions as follow: temperatures were changed from 225oC to 400oC at 10 different points, annealing time were changed from 0 to 60 minutes at 5 different periods. Then heat-treated specimens were tested at Zwick tensile test machine. From test results, percent earing values were determined. After comparing all test results each other, it was seen that the percent earing was determined as 8,49 for untreated AA 1060 alloy but the percent earing was found as 3,62 for specimens which were annealed at optimum treating parameters as 300oC temperature and 30 minutes time. An obvious reduction was determined in percent earing. Finally, it was determined in this study that earing-anisotropy ratio relationship given by some researchers for different aluminum alloys in invalid for AA 1060.

Anahtar Kelimeler

• AA 1060, Annealing, Earing

Kaynakça

1. “Alüminyum Soğuk Levhaların Derin Çekilmesinde Karşılaşılan Problemler ve Ingot Problemlerin Çözümüne Katkısı”, Selçuk Üniversitesi Dergisi, 1988, Konya. Bu
2. Kayali, E.S., Ensari, C.; “Metallerde Plastik Uygulamaları”, ITU Kimya-Metalurji Fakultesi Yayın No:86-1, 1985, Istanbul.
3. Dieter, G.E.; “Mechanical Metallury”, Mc-Graw Hill, Kogakusha Ltd, 1976, Tokyo.
4. Yegerova, L.S., Kalinkin, G.; “Alumınyum Tercume Seydisehir. EATGB Yayinlari No:147, 1978,
5. Altenpohl, D.; “Aluminum Viewed from Within, an Introduction into the Metallurg of Alumiium Fabrication”, Aluminium Verlag, 1982, Dusseldorf.
6. Falkenstain, R., P.; “Formability of Aluminum Sheet Alloys (II)”, Aluminum, 58, pp.701-709, 1982.
7. Metallurgy, Part II, Metallurgical Process Technology”, Hodder and Stoughton, 1974, Hong Kong.
8. Deformation of Metals”, Edward Arnold, 1968, London. R.W.K.; “Plastic Deliküçük, Y.; “Al-Mn

9. Alaşımlarında Tav Parametrelerinin Derin Çekilebilirliğe Etkileri”, S.U.FBE., 1989, Konya.
10. Rogers, R.W., Anderson, W.A.; “Effect of Plastic Anisotropy on Drawing Characteristics Sheet”, Drawing and Sheet Metal Aluminum Alloy Forming, pp 185-188, 1985.
11. Öztürk, T., Orhaner, F.O., Kalay, G.; Etial-52 Biçimlendirilebilirliği”, Kongresi, 1988, Ankara. Levhaların Metalurji
12. Delikanli, K.; “Soğuk Hadde Ürünü Teknik Çekilmesinde Tavlama Suresi ve Selçuk Üniversitesi, Fen Chekhonın, P., Beausır, B. and etc.; “Mechanical Anisotropy of Aluminum Laminates Produced by ARB” Materials Science Forum Vols. 702-703 (2012) pp 151-156, 2012
13. Çimenoğlu, H., Kayalı, E.S.; “Alüminyum Şekillendirilebilirliğini Faktörler”, II. Uluslararası Alüminyum Sanayii Kongresi, 1984, Seydişehir.
14. Zhao, Z., Mao, W. , Roters, F. and Raabe, D.; “A texture optimization study for minimum earing in aluminum by use of a texture component crystal plasticity finite element method”, Elsevier, Acta Materialia vol. 52. pp, 1003–1012, 2004