Depth-sensing indentation tests in studying plastic instabilities

Chinh, Nguyen Quang and Gubicza, Jenő and Kovács, Zsolt and Lendvai, János (2004) Depth-sensing indentation tests in studying plastic instabilities. Journal of Materials Research, 19 (1). pp. 31-45. ISSN 0884-2914 (print), 2044-5326 (online)

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Abstract

This review surveys the phenomenon of plastic instabilities occurring in depth-sensing indentation measurements. Investigations presented focus on the characterization of Portevin-Le Chatelier type instabilities observed in different metal alloys during indentation. The effect of some important factors such as solute concentration, the formation of Guinier-Preston zones, and grain size and orientation are described and discussed. The phenomenon of plastic instabilities as serrated flow recently observed in bulk metallic glasses is also briefly reviewed.

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