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Effect of Sr Addition to a Modified AA3003 on Microstructural and Corrosion Properties Vrije Universiteit Brussel

Donovan Verkens, Reynier I. Revilla, Richard Huizenga, Mert Günyüz, Cemil Isiksacan, Herman Terryn, Iris De Graeve
Sr is known to transform the morphology of the eutectic silicon phase as well as the Fe-rich β phase in Al-Si alloys, improving their mechanical properties. However, little is known about the effect Sr has on the (local) corrosion properties of aluminium alloys. This study investigates the effect of Sr addition to a modified AA3003 heat exchanger material on the morphology of the different phases present, especially the Fe-rich phases, as well ...

Study of the corrosion behaviour of Twin Roll cast AA3XXX and AA8XXX series material Vrije Universiteit Brussel

Donovan Verkens
The production of aluminium foil products is typically done by means of Direct
Chill (DC) casting. However, this casting technique requires the need for
expensive hot rolling facilities, to ensure a proper reduction in thickness of the
foil products. Therefore, an alternative technique, which does not require the
need for such expensive hot rolling facilities, became of significant interest for
the aluminium industry. ...

Effect of simulated brazing on the microstructure and corrosion behavior of twin roll cast AA3003 Vrije Universiteit Brussel

Donovan Verkens, Reynier I. Revilla, Ali Kosari, Mert Gunyuz, Cemil Isiksacan, Johannes M. C. Mol, Iris De Graeve, Herman Terryn

Aluminum alloy (AA) 3003 is widely used as fin and tube material in heat exchangers. In these heat exchangers, the tube and fin material are brazed together by means of an AA4xxx alloy. In this study, the effect of a simulated brazing step on the microstructure and corrosion behavior of a twin roll casted (TRC) AA3003 was studied. In particular, the effect of simulated brazing on the corrosion properties of the centre line segregation (CLS) ...

Galvanostatic Anodizing of Additive Manufactured Al-Si10-Mg Alloy Vrije Universiteit Brussel

Reynier I. Revilla, Donovan Verkens, Gaëlle Couturiaux, Loic Malet, Lore Thijs, Stéphane Godet, Iris De Graeve

The galvanostatic anodizing behavior of additive manufactured (AM) Al-Si10-Mg alloy was studied in H 2SO 4 electrolyte. The analysis of the voltage vs time response was complemented with a systematic characterization of the anodic oxide layer using a variety of techniques. In addition, a cast alloy of approximately the same chemical composition as that of theAMspecimens was used as a reference in this study. Significant differences were found ...

Effect of Homogenization Temperature and Soaking Time on the Microstructure and Corrosion Properties of a Twin Roll Casted AA3003 Vrije Universiteit Brussel

Donovan Verkens, Mert Günyüz, Cemil Işiksaçan
The AA3003 alloy is widely used as fin material in heat exchangers. The life time of these heat exchangers is mostly determined by their corrosion properties. Twin roll casting (TRC) of AA3003 material is known to often result in the formation of a macrosegregation area of alloying elements towards the centre plane of the casted strip (centre line segregation = CLS). Considering the potential exposure of cross-sectional areas of TRC material in ...

Corrosion and Corrosion Protection of Additively Manufactured Aluminium Alloys-A Critical Review Vrije Universiteit Brussel

Donovan Verkens

Metal additive manufacturing (MAM), also known as metal 3D printing, is a rapidly growing industry based on the fabrication of complex metal parts with improved functionalities. During MAM, metal parts are produced in a layer by layer fashion using 3D computer-aided design models. The advantages of using this technology include the reduction of materials waste, high efficiency for small production runs, near net shape manufacturing, ease of ...