Effect of Shot Peening on Surface Fatigue Life of Carburized and Hardened AISI 9310 Spur Gears

Author:  NASB Technical Paper 2047, 1982
Source:  The Shot Peener magazine, Vol 16 / Issue 3, Fall 2002
Doc ID:  2002104
Year of Publication:  2002
Abstract:  
Dennis P. Townsend and Erwin V. Zaretsky Lewis Research Center Cleveland, Ohio Summary Gear surface fatigue endurance tests were conducted on two groups of 10 gears each of carburized and hardened AISI 9310 spur gears manufactured from the same heat of material. Both groups were manufactured with standard ground tooth surfaces. The second group was subjected to an additional shot-peening process on the gear tooth surfaces and root radius to produce a residual surface compressive stress. The gear pitch diameter was 8.89 cm (3.5 in.). Test conditions were a gear temperature of 350 K (170