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Characterization of intermetallic Fe-Mn-Si powders produced by casting and mechanical ball milling
KTH, Superseded Departments, Materials Science and Engineering.ORCID iD: 0000-0002-8494-3983
2003 (English)In: Powder Technology, ISSN 0032-5910, E-ISSN 1873-328X, Vol. 137, no 3, 139-147 p.Article in journal (Refereed) Published
Abstract [en]

Mechanical milling is a common method used to produce different powders. Milling time is one of the most important factors in the process, which affects characteristics such as particle size distribution and morphology. Four compositions of mechanically milled Fe-Mn-Si master alloy powders were investigated in the present paper. Milling times from 10 to 120 min were used. Particle size distribution and milling kinetics of Fe-Mn-Si powders were studied, and the parameters in breakage function have been determined. The results show that powder characteristics vary with the contents of silicon and manganese. During milling, the particle size initially decreases. At longer milling times, however, small particles agglomerate to larger particles (overmilling). The optimum milling time to get powders with very fine particle sizes is alloy-dependent. Apart from the agglomeration, the milling process of Fe-Mn-Si powders can be described by a classic batch-grinding equation based on the population balance model.

Place, publisher, year, edition, pages
2003. Vol. 137, no 3, 139-147 p.
Keyword [en]
Fe-Mn-Si powder, particle size distribution, modelling, grinding kinetics, breakage function, alloyed sintered steels, batch grinding equation, operating variables, breakage parameters, part i, kinetics, microstructure, behavior, velocity
URN: urn:nbn:se:kth:diva-23014DOI: 10.1016/j.powtec.2003.08.058ISI: 000187129800004OAI: diva2:341712
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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