The consideration of surface-densified PM parts for high attrition areas of automotive gearing applications is discussed. It is observed that despite the successes of PM, property requirements of automatic transmission pinion gears exceed the current capabilities of conventional PM processing. It is shown that the shallowness of the densified case and the corresponding decrease in mechanical properties is inadequate to support the magnitude of the sub-surface stresses. However, it is stated PM processing is capable of producing dimensionally accurate components that have successfully replaced many high strength components.
Toughening PM gear parts for arduous roles
Metal Powder Report ; 59 , 9 ; 48-58
2004
11 Seiten
Aufsatz (Zeitschrift)
Englisch
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