Development Of Mechanical Surface Strengthening Processes From The Beginning Until Today

Author:  Kloos, K. H. and Macherauch, E.
Source:  Conf Proc: ICSP-3, (p. 3-27)
Doc ID:  1987015
Year of Publication:  1987
In this paper, the scientific and technological efforts will be outlined, which were made during the development of mechanical surface strengthening procedures to improve the fatigue strength of materials. Excluding particular straining methods, e.g. coining or inhomogeneous plastic deforming, which can also be restricted to well-defined surface and subsurface areas, three different ways exist in which the fatigue strength can mechanically be effected: Firstly, by machining, secondly, by rolling and thirdly, by shot peening. These processes are applicable to brittle as well as to ductile materials. Furthermore, they are not restricted to materials with particular chemical composition or to distinct material states. Moreover, they can be applied to smooth and notched surfaces. In the following, the historical marks in the development of these three surface strengthening methods will be discussed in more detail up to the end of the 1950's. All data presented were carefully gathered and are well documented. However, the authors are not quite sure whether or not they overlooked some important documents. In the final chapter of the paper, it will be commented on some newer contributions to mechanical surface strengthening. Thereby, from the large amount of excellent work achieved by many scientists in the last three decades, for reasons of space only a few examples can be selected, of course individually. This has been done with full respect to the entirety of investigations which determine the scientific and technological progress reached in this important field.

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