In the current work AA2024 alloy has been
processing with three multiple passes. The heat generated during FSP is varied depend on the processing parameters
speeds, a furthermore number of passes. Defects Defects
macroscopic examination. The result revealed that multi
though dispersion of Al
Introduction
Friction stir processing is considered the most advanced
technique used to develop modified surfaces. The process
controlled by processing parameters such as tool rotation speed,
travel speed, tool shaped design, tool tilt angle and
passes are performed [1-3]. Processing parameters control the
amount of heat generated in the specimen, the interaction between
the rotating tool and specimen generates heat due to friction action
and plastic deformation. Insufficient heat input or inadequate/
improper plastic flow causes many Defects such as the tunnel,
cavities and pinholes could form during friction stir processing
Many researchers have discussed the relation between the process
parameters and the quality of processed metals according to[
9].The heat generated in Stirring Zone effect on material flow and
consequently, affects the mechanical and tribological properties
[10]. The heat-generated process is one of the most important
aspects of the FSP investigation. The study and understanding of
the heat transfer process can be useful in evaluating and predict
the thermal cycles of the processed surfaces [11]. There are a few
published mathematical and analytical models with the different
approach are calculating and evaluating the amount of heat
generated during FSW and FSP [12-15].
The main aims of the current work is to investigate the Effect
of processing parameters on the defects formed during friction stir
processing AA2024-Al2O3 metal matrix Nano composite surface,
Moreover the study the effect of processing parameters on the heat
generation that influence on the quality of the fabricated surface
composite metal.
Experimental
In the current study, the base material has been used is AA
2024-Osheets with 4 mm thickness are fabricated with
Al2O3nanoparticles using friction stir processing in order to
© 2017
Vol. 5 (2), 2017, pp 524-527
http://www.jmsse.org/ & http://www.jmsse.in/
Surface Engineering
f Al2O3Metal Matrix Fabricated by Friction Stir
, Abdel-Wanis2, Tamer Mahmoud2, El-Sayed El
, King Abdul-Aziz University, K.S.A.
Mechanical Egypt.
reinforced with alumina nano particles using friction stir
arise through all fabrication process have been detected by
multi-pass FSP improves the surface composite homogeneity
Al2O3 nano particles in the metal matrix composite. |
