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V. Schulze, F. Bleicher, P. Groche, Y. Guo, Y. Pyune:
"Surface Modification by Machine Hammer Peening and Burnishing";
Keynote Lecture: 66th General Assemblyof CIRP 2016, Guimaräes, Portugal (invited); 08-21-2016 - 08-27-2016.

A wide range of surface modification processes has been
developed over the past decades. Beside the well-established processes
such as shot peening, there are other emerging surface modification
processes such as machine hammer peening with a potential of applications
that still needs to be evaluated. Therefore, all surface modification
processes using guided tools with periodic or continuous contact to the
workpiece are compared in this paper. After a classification of the
processes, the paper presents a systematic description by comparing the
different technologies and it explains the proposed standardized
nomenclature. It identifies the relevant physical mechanisms of the
surface modifications processes and it compares the influences on surface
roughness, residual stresses, work hardening and microstructure. One
section is dedicated to the need of an accompanying quality assurance.
Furthermore, the capabilities of different process simulation approaches
are analyzed with respect to process mechanisms and the resulting surface
layer characteristics. The service performance such as fatigue life,
corrosion resistance, friction and wear are discussed based on best
practice results. Finally, the paper discusses the actual and potential
applications of surface modification processes: surface strengthening,
post welding treatments, smoothing of tools and molds as well as surface
structuring and embedding of coating materials.