Study of the Mechanical Behaviour of a Zr-Based Metallic Glass Rod Using Micro- and Nano-Indentation

Sort, Jordi; Steenberge, N. Van; Gimazov, A.A.; Concustell, A.; Suriñach, Santiago; Gebert, A.; Eckert, Jürgen; Física, Departament de

doi:10.2174/1874088x00802010001

Cited by 6 publications

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References 38 publications

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“…It may be worth noting that indentation size effects have also been observed in metallic glass [13] and therefore the indentation size effect can not be only be related to the notion of geometrically necessary dislocations. In the here investigated polymer polyamide/imide it is believed that the indentation size effect can be rationalized by the notion of the Frank energy which is increasing with increasing rotational gradients.…”

Section: Discussionmentioning

confidence: 99%

Size Dependent Hardness of Polyamide/Imide

Tatiraju¹,

Han

Nikolov

2008

TOMECHJ

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Indentation experiments with indentation depths in the nano-and micrometer ranges in the literature have shown that that an indentation size effect similar to metals is present in polymers. In this paper we present indentation experiments of a polyamide/imide polymer of indentation depths in the range of 1 to 30 microns. An increase in hardness of about 70% was observed at small indentation depths compared to hardness at large indentation depths. The indentation results are discussed with respect to an indentation hardness rule based on Frank elasticity suggested in a previous paper by the authors. It is found that the hardness model agrees well with the experiments.

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Section: Discussionmentioning

confidence: 99%