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In metal forming process, improving mechanical and
surface properties of tool steels has been significant issue, since the
productivity is mainly related with the service life of tools. In order
to enhance service life of tools, wear is the most challenging
problem to tackle due to its detrimental effects on surface and
dimensional characteristics of components especially produced by
hot forming process. In the present study, influence of nitriding on
the wear resistance of famous AISI H13 tool steel was investigated
by homemade impact-sliding wear tester to simulate forces which
affects tool steels during extrusion process. Structural
characterization of nitrided and bare samples via using X-ray
diffractometer, optical and scanning electron microscopes was
conducted along with hardness measurements. Wear tracks of
samples subjected to impact-sliding wear test at room and
elevated temperature were examined under scanning electron
microscope in order to determine their wear mechanism. 2-D
profilometer was also used to measure the wear loss.
Results of these examinations revealed that nitriding leads to
increment in impact-sliding wear resistance of H13 tool steels at
room and elevated temperature.
International Iron & Steel Symposium
UDCS
Belda Aydın
Birsen Baş
Mertcan Kaba
Mert Altay
Faiz Muhaffel
Utku İnan
Seçkin Özkurt
Erdem Atar
Huseyin Cimenoglu