Cr materials a Means to Lift Mechanical Properties to Next Level, Enabling New Challenging Applications

The continued expansion of the PM market into new applications requires cost-effective materials with increased performance. This can be achieved by different means. The development of new-cost effective alloy systems, new compaction techniques enabling higher densities, sintering combined with increased cooling rates and carbon control are all examples of means that either singly or in combination can be used to increase material performance. Alloying elements commonly used in PM materials intended for high performance applications are copper, nickel and molybdenum. However, raw material prices of these elements have been volatile in recent years, making material cost predictions difficult.Chromium is interesting as an alloying element due to its performance enhancing ability and cost effectiveness. Cr containing powders in combination with new sintering capabilities regarding both temperature and cooling rates offer means to fully utilize the advantages of Cr as an alloying element enabling cost effective manufacturing of new challenging applications for PM.The objective of this paper is to demonstrate properties achievable with Cr pre-alloyed powders. After different processing routes, materials based on these powders exhibit properties suitable for synchronizing hubs, cam lobes, gears and other challenging applications.

کلیدواژه ها:

Chromium materials ، Mechanical properties