Rapid cyclic heating of mild steel and its effect on microstructure and mechanical properties

Simple item page
dc.contributor.authorAweda, J.O.
dc.contributor.authorOrhadahwe, T.A
dc.contributor.authorOhijeagbon, I.O.
dc.date.accessioned2019-11-25T08:02:48Z
dc.date.available2019-11-25T08:02:48Z
dc.date.issued2018
dc.descriptionConference Proceedingen_US
dc.description.abstractThe effect of subjecting mild steel to several cycles of rapid heat treatment on its mechanical properties and microstructure was investigated. Mild steel of 0.213 wt % carbon was subjected to transformation heat treatment from austenite to pearlite and quenched in running water. Rapid heating was achieved by preheating an electric muffle furnace to 840 oC before charging the samples into it. Each cyclic heat treatment was for a period of 200 seconds held at 840 oC. and cooled to 700 0C which was repeated four times. The effects of cycle numbers were evaluated by testing for impact, hardness, ultimate tensile strength and microstructural properties. The results showed that after 4th cycle of rapid heating the samples had impact energy 64.6 J, Brinell hardness number 563 and ultimate tensile strength 1257.78 N/mm. The samples after one cycle had ultimate tensile strength 1027.45 N/mm 10.396% and impact energy 286.174 N.m before failure. Through cyclic heating, grain refinement was achieved by the fast-simultaneous nucleation at the grain boundaries and the fast martensite to austenite transformation due to the fast heating rate which prevented austenite grain growth. Mechanical properties of the studied steel sample were improved with the rapid heat treatment cycles given.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/3479
dc.language.isoenen_US
dc.publisherIOP Conference series: Materials Science and Engineeringen_US
dc.relation.ispartofseries413;
dc.subjectcyclic heatingen_US
dc.subjectrapid heat treatmenten_US
dc.subjectmicrostructureen_US
dc.subjectquenchingen_US
dc.titleRapid cyclic heating of mild steel and its effect on microstructure and mechanical propertiesen_US
dc.typeArticleen_US

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Aweda_Orhadahwe_Ohijeagbon_2018_ICES.pdf
Size:
738.22 KB
Format:
Adobe Portable Document Format
Description:
Main Article
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.69 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections