Influence of residual stress on the sliding wear of AISI 4340 steel

Abstract

Mechanical components and structures wear out as a result of friction between surfaces in relative motion. Residual stresses play an important role for the tribological performance of components since compressive residual stresses yield positive effects on wear resistance. However, the real effect of residual stresses on the tribological performance of surfaces is not entirely clear. The objective of this work is to evaluate the residual stress behavior during a pin-on-disk wear test of quenched and tempered AISI 4340 disk specimens against a counter-body of steel AISI E 52100. Tests were performed in shot peened and non-shot peened specimens in six steps and residual stresses were evaluated after each one by X-ray diffraction technique using sin 2  method. The results shown that wear rate of the shot peened specimens was approximately fifty percent lower. Shot peening induced compressive residual stresses contributed to this effect even though they were modified during the pin-on-disk test.

The Effect of Multi-Walled Carbon Nanotubes Additives on the Tribological Properties of Austempered AISI 4340 Steel

“…AISI 4340 steel was examined for tribological performance in dry sliding scenarios at room temperature. The primary wear pattern identified with a subsurface plastically deformed layer was abrasive wear with moderate adhesive wear and delamination, with an increase in the degree of plastic deformation from subsurface to surface [9]. To examine the tribological properties of quenched and tempered AISI 4340 steel, a ball on disc tribometer was utilized.…”