Tough Hypereutectic High Chromium White Iron – A double in-situ fibrous composite

Simple item page
dc.contributor.authorPowell, G.
dc.contributor.authorBrown, I.
dc.contributor.authorNelson, G.
dc.contributor.editorBell, J.
dc.contributor.editorYan, C.
dc.contributor.editorYe, L.
dc.contributor.editorZhang, L.
dc.date.issued2008
dc.description© (2008) Trans Tech Publications
dc.description.abstractA tough hypereutectic high chromium white iron has been developed by considering the alloy as a double in-situ fibrous composite and applying the principles of composite theory. The eutectic in the ternary Fe-Cr-C system solidifies as M7C3 carbide rods of irregular hexagonal cross section in a matrix of austenite. The carbide rods are intermittently joined together with no misorientation at the joint. The colonies (eutectic grains) of a 27%Cr alloy solidify with a flat solid – liquid interface. In hypereutectic high chromium white irons the primary carbide solidifies as single crystal rods with no branching. Depending on the thermal conditions in the mould the primary carbides are nucleated only on the mould surface, or repeatedly at the solid – liquid interface. In 27% Cr, 4.5%C hypereutectic alloys, the as-solidified microstructure is one of long parallel aligned primary carbides in a eutectic matrix of carbide rods in austenite, or short randomly orientated primary carbides in a eutectic matrix. In either case the microstructure can be described as a double in-situ fibrous composite. The application of composite theory has resulted in hypereutectic high chromium white iron castings with improved fracture toughness similar to that of heat-treated alloy steel but with superior wear resistance.
dc.description.statementofresponsibilityG.L.F. Powell, I.H. Brown and G.D. Nelson
dc.identifier.citationAdvanced Materials Research, 2008; 32:111-114
dc.identifier.doi10.4028/www.scientific.net/AMR.32.111
dc.identifier.issn1022-6680
dc.identifier.issn1662-8985
dc.identifier.urihttp://hdl.handle.net/2440/43187
dc.language.isoen
dc.publisherTrans Tech Publications Ltd.
dc.relation.ispartofFrontiers in Materials Science and Technology
dc.source.urihttps://doi.org/10.4028/www.scientific.net/amr.32.111
dc.subjectHigh chromium white iron
dc.subjecthypereutectic
dc.subjectin-situ composite
dc.subjecttoughness
dc.subjectwear resistance
dc.titleTough Hypereutectic High Chromium White Iron – A double in-situ fibrous composite
dc.typeJournal article
pubs.publication-statusPublished

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
hdl_43187.pdf
Size:
1.06 MB
Format:
Adobe Portable Document Format
Download

Collections

Mechanical Engineering publications
Materials Research Group publications