سال انتشار: ۱۳۹۱

محل انتشار: دومین کنفرانس بین المللی آلومینیوم

تعداد صفحات: ۴

نویسنده(ها):

S. Salari – Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, P. O. Box: 15875-4413, Iran
M. Marvi-Mashhadi – Department of Mining and Metallurgical Engineering, Amirkabir University of Technology, Tehran, P. O. Box: 15875-4413, Iran
H. Vafaeenezhad – Department of Material Science & Engineering, Ferdowsi University of Mashhad, Mashhad, P.O. Box: 91775-1111, Iran
A. Rezaee-Bazzaz – Department of Material Science & Engineering, Ferdowsi University of Mashhad, Mashhad, P.O. Box: 91775-1111, Iran

چکیده:

In the current research, an attempt was made to use the capability of instrumented sharp indentation experiment in a multi-cycle loading on Zinc containing aluminium alloy (7XXX). The Bauschinger effect on yielding behaviour of samples was investigated by indentation using Vickers indenter. Subsequently, a comparison step was performed utilizing the uniaxial tension test. Assuming constant values for work hardening exponent, stress-strain and load-displacement curves resulted from tension and indentation were plotted respectively and yield stress was derived. Comparing the yield stresses of tension and indentation tests indicates that, instrumented indentation technique can be considered as a reliable substituent for conventional tension method. In order to verify the experimental results obtained from both tests, finite element approach was conducted for process simulation, and curves show acceptable agreement between experimental and predicted results.