New Aluminum Alloys for Cylinder Liner Applications PEAK Werkstoff GmbH

Format:

Conference/Event

Author/Creator:

Krug, Peter, author.

Conference Name:

SAE 2006 World Congress & Exhibition (2006-04-03 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2006

Summary:

A well-established cylinder bore liner material for aluminum engine blocks is Silitec (Dispal S260). This spray-compacted, hypereutectic aluminum-silicon alloy is cast into aluminum cylinder blocks using the high pressure die casting (HPDC) process. Silitec is well suited to the HPDC process because the thermal energy of the molten aluminum is removed rapidly through the metal die.Other casting processes such as sand, semi-permanent mold and low pressure die casting have longer solidification times, resulting in additional thermal energy being transferred to the aluminum liners. This additional energy may result in localized melting and deformation of the liner. Thus, in order to use aluminum cylinder liners in casting processes other than HPDC, it becomes necessary to develop alloys that are more resistant to residual heat in the casting process.In addition to thermal improvement for manufacturability, engine manufacturers also need increased mechanical properties to withstand the increasing combustion pressures of newer engine designs. These higher engine pressures increase the stress on the liner, requiring alloys with higher strength and stiffness.This paper will describe recent work at PEAK Werkstoff GmbH in Velbert, Germany, to develop new aluminum alloys to meet the needs of different casting processes and higher engine output. Included will be properties of the newly-developed Dispal alloys and recommendations for their application

Notes:

Vendor supplied data

Publisher Number:

2006-01-0983

Access Restriction:

Restricted for use by site license