Influence of aging conditions on fatigue fracture behaviour of 6063 aluminum alloy
Other Title(s)
تأثير الظروف الزمنية على سلوك كسرإجهاد سبيكة الألو منيوم 6063
Joint Authors
Siddiqui, Rafiq Ahmad
al-Araimi, Said Ali
Turgutlu, Ahmet
Source
Sultan Qaboos University Journal for Scientific Research-Science and Technology
Issue
Vol. 2001, Issue 6 (30 Jun. 2001), pp.52-60, 9 p.
Publisher
Sultan Qaboos University College of Science
Publication Date
2001-06-30
Country of Publication
Oman
No. of Pages
9
Main Subjects
Topics
Abstract AR
تمت في هذه الدراسة المعالجة الحرارية لسبيكة من الألمونيوم و المغنيسيوم و السيليكون (AL-MG-si) 6063 باستخدام درجات حرارة أقل و أعلى من أفضل درجة حرارة للمعاملة الحرارية للسبيكة.
و قد تم اختيار عدد الدورات الضرورية لإحداث كسور إجهاد تحت جهد ثابت كمعيار على مقاومة الإجهاد.
و تم تقييم سطح الكسر للسبيكة تحت ظروف زمنية مختلفة بواسطة الميكروسكوب البصري و الميكروسكوب الإلكتروني الكاشف.
كما و أكدت الصور الإلكترونية وجود سطوح شقوق مع خطوط محددة للإجهاد.
و لوحظ بان زمن و درجة حرارة السبيكة تنتج أشكال كسور مختلفة.
و وجد بأن أفضل زمن و درجة حرارة.
Abstract EN
Aluminum-magnesium-Silicon (Al-Mg-Si) 6063 alloy was heat-treated using under aged, peak aged and overage temperatures.
The numbers of cycles required to cause the fatigue fracture, at constant stress, was considered as criteria for the fatigue resistance.
Moreover, the fractured surface of the alloy at different aging conditions was evaluated by optical microscopy and the Scanning Electron Microscopy (SEM).
The SEM micrographs confirmed the cleavage surfaces with well-defined fatigue striations.
It has been observed that the various aging time and temperature of the 6063 Al-alloy, produces different modes of fractures.
The most suitable age hardening time and temperature was found to be between 4 to 5 hours and to occur at 460 K.
The increase in fatigue fracture property of the alloy due to aging could be attributed to a vacancy assisted diffusion mechanism or due to pinning of dislocations movement by the precipitates produced during aging.
However, the decrease in the fatigue resistance, for the over aged alloys, might be due to the coalescence of precipitates into larger grains.
American Psychological Association (APA)
Siddiqui, Rafiq Ahmad& al-Araimi, Said Ali& Turgutlu, Ahmet. 2001. Influence of aging conditions on fatigue fracture behaviour of 6063 aluminum alloy. Sultan Qaboos University Journal for Scientific Research-Science and Technology،Vol. 2001, no. 6, pp.52-60.
https://search.emarefa.net/detail/BIM-26608
Modern Language Association (MLA)
Siddiqui, Rafiq Ahmad…[et al.]. Influence of aging conditions on fatigue fracture behaviour of 6063 aluminum alloy. Sultan Qaboos University Journal for Scientific Research-Science and Technology No. 6 (2001), pp.52-60.
https://search.emarefa.net/detail/BIM-26608
American Medical Association (AMA)
Siddiqui, Rafiq Ahmad& al-Araimi, Said Ali& Turgutlu, Ahmet. Influence of aging conditions on fatigue fracture behaviour of 6063 aluminum alloy. Sultan Qaboos University Journal for Scientific Research-Science and Technology. 2001. Vol. 2001, no. 6, pp.52-60.
https://search.emarefa.net/detail/BIM-26608
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 59-60
Record ID
BIM-26608