Volume: 2, 2023
2nd International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland:
ENVIRONMENT – PLANT – ANIMAL – PRODUCT
Abstract number: T054
DOI: https://doi.org/10.24326/ICDSUPL2.T054
Published online: 19 April 2023
ICDSUPL, 2, T054 (2023)
Additive manufacturing of 17-4PH stainless steel
Aleksander Świetlicki1*, Mariusz Walczak1, Mirosław Szala1
1 Department of Materials Engineering, Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, 20-618, Lublin, Poland
* Corresponding author: aleksander.swietlicki@pollub.edu.pl
Abstract
Additive manufacturing (AM) is a modern, innovative manufacturing method that enables the production of fully dense products with high mechanical properties and complex shapes that are often impossible to obtain by traditional methods. This study analyzed the effect of precipitation hardening on the properties of 17-4PH steel obtained by direct laser metal sintering (DMLS) technology belonging to powder bed fusion (PBF) methods. The 17-4PH (AISI 630, X5CrNiCuNb16-4) steel grade is often applied where high mechanical performance is required. However, DMLS products should be modified to increase their hardness, strength, and at the same time to ensure their high corrosion resistance. 17-4PH is intended for precipitation hardening, a process that combines solution and aging treatments and is used to significantly change the microstructure of steel and enhance its mechanical properties. The aim of the study is to evaluate the effect of post-processes on the properties of 17-4PH steel. Including the effect of heat treatment on the properties and corrosion resistance of the steel. The heat treatment was carried out at a constant temperature of 1040°C and solution treatment time of 40 min the aging process was carried out at a constant time of 4h at 450°C. To determine the effect of heat treatment on the corrosion resistance of the steel. Chemical composition analysis was carried out, as well as Vickers hardness measurements and corrosion tests in NaCl solution. In order to compare the materials produced by DMLS technology, the results were related to the properties of 17-4PH steel produced by traditional technology, and compared with non-heat-treated specimens. Participation hardening process increased the hardness by about 40%.
How to cite
A. Świetlicki, M. Walczak, M. Szala, 2023. Additive manufacturing of 17-4PH stainless steel. In: 2nd International PhD Student’s Conference at the University of Life Sciences in Lublin, Poland: Environment – Plant – Animal – Product. https://doi.org/10.24326/ICDSUPL2.T054