Influence of stress relieving thermal cycles on AISI10Mg specimens produced by selective laser melting.
Mfusi, B.J. Mathe, N.R. Popoola, P.A.I. Tshabalala, L.C.
Mfusi, B.J.
Mathe, N.R.
Popoola, P.A.I.
Tshabalala, L.C.
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Abstract
The AlSi10Mg alloy is known for its castability, corrosion resistance, high heat conductivity, low weight and good weldability. Applications of the aluminium alloy components includes heat exchangers that are subjected to high temperatures and corrosive environments. The production process of AlSi10Mg alloy using selective laser melting has been extensively explored because of its hypoeutectic composition of Al and Si. However, it has been observed that stress relieve has a negative consequence on tensile properties of SLM built samples, while retaining and improving ductility. The thermal behaviour of AlSi10Mg alloy fabricated by selective laser melting with the specimen heat treated at 300°C for 2 hours investigated in this work. The specimens exhibited mass gain during the thermalgravimetric analysis as a result of the precence of oxygen as one of the elements present as detected by the elemental analysis. The fatigue results post thermal treatment demonstrated improved fatigue resistance qualities comparable to die-casted AlSi10Mg.
Description
Conference of the South African Advanced Materials Initiative (CoSAAMI 2019).
Conference of the South African Advanced Materials Initiative (CoSAAMI 2019)
Conference of the South African Advanced Materials Initiative (CoSAAMI 2019)
Date
2019-01-01
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IOP Publishing
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Keywords
AlSi10Mg, Thermal cycles, Selective laser melting