Synthesis and mechanical testing of grain boundaries at the micro and sub-micro scale

Malyar, N.V. and Springer, H. and Wichert, J. and Dehm, G. and Kirchlechner, C.

Volume: 61 Pages: 5-18
DOI: 10.3139/120.111286
Published: 2019

The important role of grain boundaries for the mechanical properties of polycrystalline materials has been recognized for many decades. Up to now, the underlying deformation mechanisms at the nano- and micro scale are not understood quantitatively. An overview of the synthesis and subsequent mechanical testing of specific grain boundaries at the micro and sub-micro scale is discussed in the present contribution, including various methods for producing one or multiple specific, crystallographically well-defined grain boundaries. Furthermore, established micromachining methods for isolating and measuring local dislocation-grain boundary interactions are portrayed. Examples of the techniques described are shown with to the aid of copper grain boundaries. © Carl Hanser Verlag, München

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