Low-carbon, Mn-Si cast steel structure modification by fluidized bed heat treatment

摘要

The effect of fluidized bed heat treatment (FBHT) on low-carbon Mn-Si cast steel strength properties improvement,strictly ductility is shown in this paper. Fluidized bed heat treatment variants are chosen in order to eliminate the structure defaults after a crystallization process.FBHT parameters are set considering an initial state material chemical composition,structure morphology and application criterion after heat treatment.The results are verified according with the standard BS 3100:1991 recommendations.Fluidized bed heat treatment variants are chosen mainly in order to the Widmanst鋞ten ferrite structures elimination,carbides morphology modification and matrix optimum performance properties achievement.The ZG35SiMn (EN: L30GS) FBHT processes results are verified by the metallographic researches, hardness/microhardness measurements and tensile strength examination.