Searched for: author%3A%22Sillekens%2C+W.H.%22
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den Bakker, A.J. (author), Werkhoven, R.J. (author), Sillekens, W.H. (author), Katgerman, L. (author)
Longitudinal weld seams are an intrinsic feature in hollow extrusions produced with porthole dies. As these joins occur along the entire extruded length, it is desirable that these weld seams have a minimal impact on the structural integrity of the extrudate. In particular, defects associated with weld seam formation should be avoided. In this...
article 2014
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Mathaudhu, S.N. (author), Sillekens, W.H. (author), Neelameggham, N.R. (author), Hort, N. (author)
conference paper 2012
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Sillekens, W.H. (author), Bormann, D. (author)
This chapter deals with the emerging field of biomedical applications for magnesium-based materials, envisioning degradable implants that dissolve in the human body after having cured a particular medical condition. After outlining the background of this interest, some major aspects concerning degradable implants in general and magnesium...
bookPart 2012
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Sillekens, W.H. (author), Bohlen, J. (author)
This chapter deals with the capabilities and limitations of the hydrostatic extrusion process for the manufacturing of magnesium alloy sections. Firstly, the process basics for the hydrostatic extrusion of materials in general and of magnesium in particular are introduced. Next, some recent research and development issues are discussed,...
bookPart 2012
document
Werkhoven, R.J. (author), Sillekens, W.H. (author), van Lieshout, J.B.J.M. (author)
Biomedical applications are an emerging field of interest for magnesium technology, envisioning biodegradable implants that resorb in the human body after having cured a particular medical condition (such as artery clogging or bone fractures). This challenges research in a sense that the materials to be used need to dissolve in vivo in a...
conference paper 2011
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Sillekens, W.H. (author), Agnew, S.R. (author), Neelameggham, N.R. (author), Mathaudhu, S.N. (author)
The Magnesium Technology Symposium, which takes place every year at the TMS Annual Meeting & Exhibition, is one of the largest yearly gatherings of magnesium specialists in the world. Papers are presented in all aspects of the field, ranging from primary production to applications to recycling. Moreover, papers explore everything from basic...
conference paper 2011
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den Bakker, A.J. (author), Werkhoven, R.J. (author), Sillekens, W.H. (author), Katgerman, L. (author), TNO Industrie en Techniek (author)
Longitudinal weld seams are an intrinsic feature in hollow extrusions produced with porthole dies. The formation of longitudinal weld seams is a solid bonding process, controlled by the local conditions in the extrusion die. Being the weakest areas within the extrusion cross section, it is desirable to achieve adequate properties of these weld...
conference paper 2010
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den Bakker, A.J. (author), Werkhoven, R.J. (author), Sillekens, W.H. (author), Katgerman, L. (author)
In hollow aluminium extrusions produced with porthole dies, longitudinal weld-seams are present throughout the entire extruded length, due to rejoining of metal streams inside the extrusion tooling. These weld-seams, formed by a solid-state bonding process at elevated temperatures and under conditions of interfacial pressure and plastic...
conference paper 2010
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Chevaleyre, F. (author), Popescu, M. (author), Sillekens, W.H. (author), Ferreres, I. (author), Kurz, G. (author), Gourdin, P. (author), Gantar, G. (author), TNO Industrie en Techniek (author)
This project, under 6th framework programme of the European Commission, aims to provide SME's with the cost-effective knowledge to provide the automotive industry with light forged magnesium-based alloys components. Low density, high mechanical properties and total recyclability pairing with the advantages provided by forging processes enable to...
article 2010
document
den Bakker, A.J. (author), Werkhoven, R.J. (author), Sillekens, W.H. (author), Katgerman, L. (author)
In hollow aluminium extrusions, longitudinal weld-seams are formed through a solid-state bonding process at elevated temperatures and under conditions of interfacial pressure and plastic deformation. For structurally loaded components, sound weld seams are imperative. In our research, a weld seam integrity indicator as a means of quantifying...
conference paper 2010
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Zhang, X. (author), Ferrari, G.M. (author), Erinc, M. (author), Sillekens, W.H. (author), TNO Industrie en Techniek (author)
The corrosion resistances for magnesium alloys AZ80, AE82 and ZM21 treated at 200 and 330°C for 2 hours, and for AZ80 and AE82 at 415°C for 8 hours were investigated using potentiodynamic polarization measurements in simulated body fluid (SBF) solution at 37°C. The morphology and the Volta potential of intermetallic precipitates in AE82 were...
conference paper 2010
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Sillekens, W.H. (author), Kurz, G. (author), Werkhoven, R.J. (author)
This paper summarises the current situation and knowledge on magnesium forging as well as its prospects for further development. It is structured according to the sequential areas of the processing chain: feedstock, forging process, finishing, and components. Attention is given to some specific metallurgical aspects of magnesium forging and the...
conference paper 2010
document
Erinc, M. (author), Zhang, X. (author), Sillekens, W.H. (author), TNO Industrie en Techniek (author)
Magnesium and its alloys are light weight, biodegradable materials. They can be used as metal implants which maintain strength and integrity for the time of recovery, followed by natural dissolution in the body preventing the necessity of implant removal. In addition to the general biocompatibility and biodegradability requirements, these...
conference paper 2010
document
Kurz, G. (author), Sillekens, W.H. (author), Werkhoven, R.J. (author), Letzig, D. (author), TNO Industrie en Techniek (author)
Wrought magnesium alloy products have favourable attributes compared to castings with regard to mechanical properties. In addition they provide a complementary class of shapes and geometries. These are the current drivers for developments within the field of magnesium forging technology. Within this context, the European research project...
conference paper 2009
document
Kurz, G. (author), Letzig, D. (author), Sillekens, W.H. (author), Werkhoven, R.J. (author), TNO Industrie en Techniek (author)
article 2009
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Erinc, M. (author), Sillekens, W.H. (author), Mannens, R.G.T.M. (author), Werkhoven, R.J. (author), TNO Industrie en Techniek (author)
Being biocompatible and biodegradable, magnesium alloys are considered as the new generation biomedical implant materials, such as for stents, bone fixtures, plates and screws. A major drawback is the poor chemical stability of metallic magnesium; it corrodes at a pace that is too high for most prospective implant applications. Requirements for...
conference paper 2009
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Kurz, G. (author), Clauw, B. (author), Sillekens, W.H. (author), Letzig, D. (author), TNO Industrie en Techniek (author)
Overall goal of the MagForge project is to provide tailored and cost-effective technologies for the industrial manufacturing of magnesium forged components. Scientific and technological aspects are new alloys/feedstock materials with improved performance, forging process modeling and design tools with a satisfying level of predictability,...
conference paper 2009
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Popescu, G. (author), Moldovan, P. (author), Bojin, D. (author), Sillekens, W.H. (author), TNO Industrie en Techniek (author)
The paper presents a study concerning the heat treatment realized on magnesium alloys, from AZ80 and ZK60 class. These alloys are destined to replace the conventional ferrous and aluminum alloys in automotive industry. It was realized the heat treatment, T5 - artificially aging, and it were determined the microstructures and mechanical...
article 2009
document
Moldovan, P. (author), Popescu, G. (author), Miculescu, M. (author), Bojin, D. (author), Dimitriu, S. (author), Sillekens, W.H. (author), TNO Industrie en Techniek (author)
Magnesium is the lightest engineering metal and has a great potential due to its raw material large natural reverse and interesting properties. Magnesium alloys are attracting increasing attention for industry for weight reduction and high fuel efficiency. Magnesium alloys are attractive alternatives for components in automotive industry, due to...
conference paper 2009
document
Constantinescu, D.M. (author), Moldovan, P. (author), Sillekens, W.H. (author), Sandu, M. (author), Apostol, D.A. (author), Miron, M.C. (author), TNO Industrie en Techniek (author)
Not too much information is available in the literature for establishing fatigue properties of magnesium alloys. A compilation of existing fatigue and fatigue crack growth data of different Mg-alloys has been published by ASM International. One can underline that fatigue properties of some of the studied Mgalloys are very good. Fatigue limits ...
conference paper 2009
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