QUALITY CONTROL OF PRECIPITATION HARDENED ALUMINIUM ALLOY PARTS VIA EDDY-CURRENT NONDESTRUCTIVE EVALUATION
Publish Year: 1394
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJMSEI-12-3_009
تاریخ نمایه سازی: 26 مرداد 1402
Abstract:
Precipitation hardening is the most common method in the strengthening of aluminium alloys. This method
relies on the decrease of solid solubility with temperature reduction to produce fine precipitations which impede the
movement of dislocations. The quality control of aluminium alloy specimens is an important concern of engineers.
Among different methods, non-destructive techniques are the fastest, cheapest and able to be used for all of parts in a
production line. To assess the ability of eddy current as a non-destructive method in the evaluation of precipitation
hardening of aluminium alloys, ۷۰۷۵ aluminium alloy specimens were solution treated at ۴۸۰°C for ۱ hr. and followed
by water quenching. Afterwards, the specimens were aged at different temperatures of ۲۰۰, ۱۷۰, ۱۴۰, ۱۱۰ and ۸۰°C for
۸ hr. Eddy current measurements was conducted on the aged specimens. Hardness measurement and tensile test were
employed to investigate the mechanical properties. It was demonstrated that eddy current is effectively able to separate
the specimens with different aging degree due to the change of electrical conductivity during aging process
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Authors
A. Abbasian
Department of Materials Science and Metallurgical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad , Iran.
M. Kashefi
Department of Materials Science and Metallurgical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad , Iran.
E. Ahmadzade-Beiraki
Department of Materials Science and Metallurgical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad , Iran.