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Effect of Ca– S i Modifiers on the Carbide Precipitation of As‐Cast Hadfield Steel
Author(s) -
ElFawkhry Mohamed K.,
Fathy Ayman M.,
Eissa Mamdouh M.
Publication year - 2014
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201300068
Subject(s) - eutectic system , materials science , cementite , microstructure , austenite , abrasion (mechanical) , carbide , metallurgy , toughness , optical microscope , precipitation , silicon carbide , composite material , scanning electron microscope , physics , meteorology
In the present work, the effect of different Ca–Si percentage that were added to Hadfield steel on the microstructure, hardness, wear abrasion resistance, and impact toughness are investigated. The optical microscope results verify avoiding of cementite network forming with increasing of Ca–Si modifiers. The results obtained by SEM show that SiO 2 , CaO acts as nuclei for austenite and carbide eutectic formation. The eutectic‐formed affects on hardness, wear abrasion resistance, as well as linear enhancing of impact toughness of as‐cast condition more than 200%.