Austempered Materials for Powertrain Applications

By: Justin Lefevre & Kathy L. Hayrynen, PhD

Publication Date: November 02, 2011

Contact: Cindy Duman

Document Type: White Papers

Austempered irons and steels offer the design engineer alternatives to conventional material/process combinations.  Depending on the material and the application, Austempering may provide the following benefits to producers of powertrain components like gears and shafts: ease of manufacturing, increased bending and/or contact fatigue strength, better wear resistance and enhanced dampening characteristics resulting in lower noise.  Austempered materials have been used to improve the performance of powertrain components in numerous applications for a wide range of industries, from gears and shafts to clutch plates and crankshafts.  This paper focuses on Austempered solutions for powertrain applications with an emphasis on gear and shaft solutions.