the effects of steel wire patenting process parameters on very fine interlamellar spacing in the pearlitic steel wire were investigated and the optimized condition of the process was achieved. in this work, the initial nanopearlitic structure was obtained in a 0.72 wt% carbon steel wire before the wire drawing process. the results were the minimum interlamellar spacing of 35 nm and maximum ulti...

Microstructures and mechanical properties after spheroidizing annealing (SA) of GCr15 bearing steel with without an alternating magnetic field (AMF) were investigated. It was found that the application AMF at austenitizing stage promoted dissolution carbides, accelerated process increased hardness quenched sample. After isothermal annealing, carbides in sample more uniformly distributed became ...

Grain structure control is challenging for metal additive manufacturing (AM). Grain structure optimization requires the control of grain morphology with grain size refinement, which can improve the mechanical properties of additive manufactured components. This work summarizes methods to promote fine equiaxed grains in both the additive manufacturing process and subsequent heat treatment. Influ...

in the present work, the effect of aluminum content, austenitizing temperature and austempering time and temperature on the mechanical properties and hardness of fe-c-al grey cast iron was investigated. for this purpose, three alloys containing 1, 2 and 4 weight percent of aluminum were provided. the tensile samples were austenitized at 850?c and 900?c for 120 min, followed by austempering proc...

in this research, effect of the number of nodular graphite particles, as an important characteristic of ductile cast irons, on the distribution of martensite in dual-phase ductile iron has been studied. ductile iron samples were produced by step casting and the samples were then annealed in order to achieve a fully ferritic structure. a special heat treatment was conducted to produce dual matri...