EFFECT OF TITANIUM ADDITION ON THE FORMATION AND DISTRIBUTION OF MNS INCLUSIONS IN STEEL DURING SOLIDIFICATION

Authors
OIKAWA K ISHIDA K NISHIZAWA T
Citation
K. Oikawa et al., EFFECT OF TITANIUM ADDITION ON THE FORMATION AND DISTRIBUTION OF MNS INCLUSIONS IN STEEL DURING SOLIDIFICATION, ISIJ international, 37(4), 1997, pp. 332-338
Citations number
34
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
ISIJ international → ACNP
ISSN journal
09151559
Volume
37
Issue
4
Year of publication
1997
Pages
332 - 338
Database
ISI
SICI code
0915-1559(1997)37:4<332:EOTAOT>2.0.ZU;2-C
Abstract
Effect of titanium addition on the size and dispersion of MnS inclusio ns in Fe-0.1C-1Mn-0.02S(mass%) base alloys has been investigated by mi croscopy. Titanium addition brings about a marked decrease in the size of MnS inclusions which are otherwise large and globular in Ti-free s pecimens. The formation mechanism of MnS inclusions is discussed on th e basis of phase diagram information and thermodynamics of particle en gulfment during solidification. It is shown that the reduction in size of the MnS particles consequent on Ti addition is directly the result of successive nucleation events involving (Ti,Mn)O and MnS at the sol id/liquid interface of iron.