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Surface Densification Coupled with Higher Density Processes Targeting High-Performance Gearing
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Surface Densification Coupled with Higher Density Processes Targeting High-Performance Gearing

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Abstract:

This paper will describe a powder and processing method that facilitates single presssingle sintered densities approaching 7.5 g/cm³. At this sintered density, mechanical properties of the powder metal (P/M) component are significantly improved over current P/M technologies and begin to approach the performance of wrought steels. High performance gears have the added requirement of rolling contact fatigue durability that is dependent upon localized density and thermal processing. Combining high density processing of engineered P/M materials with selective surface densification enables powder metal components to achieve rolling contact fatigue durability and mechanical property performance that satisfy the performance requirements of many high strength automotive transmission gears. Data will be presented that document P/M part performance in comparison to conventional wrought steel grades.

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Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

317-320

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.317

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Online since:

January 2007

Authors:

Francis Hanejko, Arthur Rawlings, Patrick King, George Poszmik

Keywords:

Heat Treatment, High Density Compaction, Mechanical Property, Rolling Contact Fatigue (RCF), Selective Densification

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

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