Case-hardening steels (EN36, 16MnCr5, and AISI 4140) are used in applications demanding good surface properties such as precision gears, shafts, cam rollers. This study explores the formation of microcoatings to improve characteristics these using carbonitriding, which combines merits carburizing nitriding offer surfaces with enhanced hardness wear resistance. Taguchi’s L18 orthogonal array is ...

This paper reports an investigation of the influence carbonitriding conditions for 20MnCr5 low alloy steel. Three gaseous were investigated based on different carbon and nitrogen potentials to attain varying levels between 0.62 0.93% mass, whereas 0.19 0.26% mass at surface. Analysis retained austenite residual stress distributions was conducted using X-ray diffraction technique. The effective ...

The carbonitriding process, which involves the diffusion of both carbon and nitrogen into the base steel, can be carried out in a salt bath or in a furnace gas atmosphere. It is a modified carburizing process but is mostly done at a lower temperature and for shorter time than carburizing. This process is one of the widely used heat treatments for surface hardening. Nonetheless, there are challe...

Gaseous carbonitriding of AISI 52100 steel was investigated under various processing conditions. The process parameters studied involve ammonia content (2.5–7.5 vol%), carbon potential (0.8–1.2%), and temperature (780–880 °C). carbon/nitrogen concentration-depth profiles that developed during were determined by light element analysis. microstructural residual stress evolution, the thermal-mecha...