Open AccessThermal conductivity of SLM deposited H13 steel
Author(s) -
Kristýna Halmešová,
Ján Džugan,
Michal Ackermann,
Martina Koukolíková,
Zuzanka Trojanová
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1178/1/012015
Subject(s) - thermal diffusivity , thermal conductivity , materials science , laser flash analysis , deposition (geology) , selective laser melting , porosity , flash (photography) , thermal , laser , composite material , base (topology) , tool steel , metallurgy , microstructure , optics , thermodynamics , paleontology , mathematical analysis , physics , mathematics , sediment , biology
Hot-worked H13 tool steel was deposited using selective laser melting (SLM) process in different deposition conditions. The samples were deposited in 2 different directions: parallel and perpendicular to the base plate of SLM device. Thermal conductivity of the deposited samples was calculated on the base of laser flash measurements up to 700°C. Furthermore, the thermal expansion, specific heat, and thermal diffusivity of the deposited samples and their variations with different deposition conditions are also presented. To explain the measured differences in thermal properties, some metallographic studies together with porosity investigation are also provided. It was shown that all measured thermal properties of the samples are affected by temperature and that the microstructural defects play an important role for the resulting thermo-physical properties.