14th International Conference on Shot Peening

Impact of Vibratory Peening on the Surface Integrity of Cemented Steel E16NCD13

A. Dasa, K. Chouchanea, H.Y. Miaoa, B. Changeuxb, J. badreddineb, S. Turennea, M. Lévesquea, E. Martin

Département de Génie Mécanique, École Polytechnique de Montréal, C.P. 6079, Succ. Centre-Ville, Montréal, Québec, H3C 3A7 Canada

Safran Tech, Materials & Processes department, Rue des Jeunes Bois, 78772 Magny-Les-Hameaux, France

Introduction

Vibratory peening is an alternative process that aims to replace the shot peening and the vibratory finishing processes. It produces compressive residual stresses comparable to those obtained by shot peening but with much better surface finish, which is believed to enhance the fatigue life of the treated part. It is also believed to improve the industrial productivity by combining the shot peening and the vibratory finishing steps into one single process. Although there are available studies on this process, no fundamental and physical works presenting the generated properties improvement of cemented steel E16NCD13 were presented.

Objectives

This paper aims to demonstrate the beneficial effects of advanced surface treatment technologies on the cemented steel E16NCD13 in terms of surface roughness, compressive residual stresses and microhardness. The surface integrity modifications produced by vibratory peening were compared to shot peening at similar Almen intensities.