Residual stresses in squeeze-cast aluminum rods |
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| Authors: | M S Abifarin M B Adeyemi |
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| Institution: | (1) Department of Mechanical Engineering, Federal University of Technology, Minna, Nigeria;(2) Mechanical Engineering Department, University of Ilorin, Ilorin, Nigeria |
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| Abstract: | The longitudinal slitting technique has been applied to determining and comparing the residual stresses in as-cast and squeeze-cast
aluminum rods. Residual stresses in the squeeze-cast aluminum alloy rods are found to increase with applied punch pressures
under a constant die-base thermocouple reference temperature. For the variations of residual stresses with varying die-base
thermocouple reference temperatures, a peak residual stress is found to occur at a die-base thermocouple reference temperature
of 100° C.
A semi-empirical formula is derived for the determination of the maximum longitudinal residual stress in the tapered cylindrical
as-cast aluminum alloy, from which the maximum longitudinal residual stresses for squeeze cast can be determined, using the
residual-stress ratios obtained experimentally |
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