Steel Pile-Up Characterization by Atomic Force Microscopy
2017; Trans Tech Publications; Volume: 891; Linguagem: Inglês
10.4028/www.scientific.net/msf.891.78
ISSN1662-9760
AutoresPeter Burik, Pavol Zubko, Ladislav Pešek, Lukáš Voleský,
Tópico(s)Metal and Thin Film Mechanics
ResumoThe Oliver–Pharr method has extensively been adopted for measuring hardness and Young’s modulus by indentation techniques. However, the method assumes that the contact periphery sinks in, which limits the applicability to the materials pile-up [1]. In this work, we characterize the pile-up (shape and height) in steel sheets with different mechanical properties and propose an improved methodology to calculate the real mechanical characteristics of steel sheets with significant pile-up. Pile-up correction of mechanical characteristics is based on ratio of pile-up height and contact depth. Pile-up height was measured by atomic force microscopy (AFM).
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