Effect of ceramic particles on the dynamic strength, deformation and toughness behavior of 42CrMo4
Institute of Materials Engineering, TU Bergakademie Freiberg, 09599 Freiberg, Germany
* Corresponding author: email@example.com
Published online: 9 September 2021
In this study, the effect of non-metallic inclusions on the material behavior of 42CrMo4 was investigated. By adding aluminum oxide particles to steel powder, different inclusion contents were simulated. The mechanical and fracture toughness properties were measured under dynamic loading. The damage was examined using the acoustic emissions. With an increasing inclusion content, a decreasing strength, deformability and fracture toughness were observed. The distribution of the inclusions along the surfaces of the prior steel particles lead to small distances between inclusions and favors the initiation of cracks at low stress. The early appearance of material damage was proven by acoustic emissions.
© The Authors, published by EDP Sciences, 2021
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