Journals / Gazi Üniversitesi Fen Bilimleri Enstitüsü Dergisi / 2002 / Cilt: 15 - Sayı: 1

Shot peening behaviour of 7075 aluminium alloy

7075 alüminyum alaşımının bilyalı dövme davranışı

Pages
163–174
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It was found out that T6 heat treatment was the most convenient one for aging conditions with respect to the highest hardness obtained on the specimen surfaces. 7075 T6 aluminium alloy fatigue specimens were tested with S110 shots under different peening intensities and air blasting pressures.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, a shot peening machine, with which a shot peening process can be accomplished, to increase the fatigue life of metallic materials under cyclic loading has been designed and constructed.
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Key Findings & Data:To determine the optimum heat-treatment conditions of 7075 aluminium alloy fatigue specimens, different heat treatment methods were applied to these specimens.
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Conclusion & Impact:It was found out that T6 heat treatment was the most convenient one for aging conditions with respect to the highest hardness obtained on the specimen surfaces. 7075 T6 aluminium alloy fatigue specimens were tested with S110 shots under different peening intensities and air blasting pressures.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, a shot peening machine, with which a shot peening process can be accomplished, to increase the fatigue life of metallic materials under cyclic loading has been designed and constructed. To make the design of the machine economically feasible, air blasting and back feeded has been manufactured. To determine the optimum heat-treatment conditions of 7075 aluminium alloy fatigue specimens, different heat treatment methods were applied to these specimens. It was found out that T6 heat treatment was the most convenient one for aging conditions with respect to the highest hardness obtained on the specimen surfaces. 7075 T6 aluminium alloy fatigue specimens were tested with S110 shots under different peening intensities and air blasting pressures. Fatigue life tests of these peened and unpeened specimens were carried out in a rotating bending type fatigue test machine. It was seen from the results that shot peening performed under the pressure of 13.79 kPa, 35 kPa and 34.47 kPa increases the fatigue life of the alloy.

Özet

Bu çalışmada, tekrarlı yükler altında çalışan metalik malzemelerin yorulma ömrünü artırmada kullanılan bilyalı dövme işleminin gerçekleştirilebileceği bir Bilyalı Dövme Makinası tasarlanıp imal edilmiştir. Makina, ekonomik olması için hava püskürtmeli ve geri beslemeli tipte imal edilmiştir. 7075 alüminyum alaşımından yapılmış yorulma numuneleri, en uygun ısıl işlem şartını belirlemek amacıyla farklı ısıl işlem basamaklarından geçirilmiş ve T6 ısıl işlemi en uygun olarak belirlenmiştir. 7075-T6 alüminyum alaşımı yorulma numuneleri, imal edilen bilyalı dövme makinasında, S110 bilya ile farklı dövme şiddetleri ve farklı hava basınçlarında dövülmüştür. Bilyalı dövme işlemine tabi tutulan numunelerle, bu işleme tabi tutulmayan numuneler dönen eğmeli tipte bir cihazda, yorulma deneyleri yapılmıştır. Yorulma deney sonuçları neticesinde 13.79, 24.13 ve 34.47 kPa basınçta yapılan bilyalı dövmelerin, alaşımın yorulma ömrünü artırdığı gözlenmiştir.

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Cite This Article

AKTAŞ, B., DEMİR, H. (2022). Shot peening behaviour of 7075 aluminium alloy. Gazi Üniversitesi Fen Bilimleri Enstitüsü Dergisi, Cilt: 15 - Sayı: 1, 163–174. https://ajindex.com/articles/522274

References (1)

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