TY - JOUR

T1 - Dynamic nanoindentation testing: is there an influence on a material’s hardness?

AU - Leitner, Alexander

AU - Maier-Kiener, Verena

AU - Kiener, Daniel

PY - 2017/6/1

Y1 - 2017/6/1

N2 - Modern nanoindentation devices are capable of dynamic experimentations, which allow us to exploit instrumented hardness tests extensively. Beside the assets of recording mechanical properties continuously over displacement, there are ongoing debates whether the superimposed force alters the material’s hardness. We will show for a broad range of materials that significant hardness differences are noted between dynamic and static tests, even for large displacements. Those mainly result from a changing indentation strain-rate during the hold segment at peak load. This fact must be implicitly considered in studies using static indentation tests to guarantee comparability of obtained nanoindentation hardness values and derived quantities.

AB - Modern nanoindentation devices are capable of dynamic experimentations, which allow us to exploit instrumented hardness tests extensively. Beside the assets of recording mechanical properties continuously over displacement, there are ongoing debates whether the superimposed force alters the material’s hardness. We will show for a broad range of materials that significant hardness differences are noted between dynamic and static tests, even for large displacements. Those mainly result from a changing indentation strain-rate during the hold segment at peak load. This fact must be implicitly considered in studies using static indentation tests to guarantee comparability of obtained nanoindentation hardness values and derived quantities.

U2 - 10.1080/21663831.2017.1331384

DO - 10.1080/21663831.2017.1331384

M3 - Article

VL - 5.2017

SP - 486

EP - 493

JO - Materials Research Letters [Elektronische Ressource]

JF - Materials Research Letters [Elektronische Ressource]

SN - 2166-3831

IS - 7

ER -