Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Influence of Nano Substructure of Cementite Lamellae on the Mechanical Properties of Galvanized Pearlitic Steel Wires
Koichi MAKIIHiroshi YAGUCHITakaaki MINAMIDAMasato KAISONobuhiko IBARAKIYasuhiro OKI
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1997 Volume 83 Issue 8 Pages 514-519


It is well known that Si improves the mechanical properties of hot dip Zn-galvanized pearlitic steel wires. However, the improving mechanism is still not clear. Thus, hot dip galvanized pearlitic steel wires were investigated by TEM observation from the viewpoint of the sub-structure of cementite lamellae. The presence of nano sized substructure was observed in electrolytically extracted cementite lamellae after hot dip Zn-galvanization process. The mean diameter of cementite sub-structure in the high tensile strength Si-containing pearlitic steel is much finer than that in a conventional low Si steel. Hence, it is concluded that Si improves the mechanical properties of galvanized pearlitic steel wires by refining the substructure of cementite lamellae.

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