An Insight into the Effect of Deformation on Carbide Dissolution in the Band Structure of Bearing Steel
2013 (English)In: Diffusion In Solids And Liquids VIII, Trans Tech Publications Inc., 2013, 171-176 p.Conference paper (Refereed)
Dendritic segregation in deformed samples remains in the form of band structure, which is a high-strained region. The present work investigates the effect of the uphill diffusion process, occurring during deformation, on the dissolution of carbide particles in the band structure. A series of hot compression tests are performed on the cast structure of bearing steel by using a hydraulic testing machine, MTS 810. Cylindrical specimens are deformed in a temperature range of 800 degrees C to 900 degrees C and at strain rates of 5s(-1) and 0.5s(-1). In order to eliminate the recovery process, samples are immediately quenched after the compression. The microsegregation of Cr, Mo, Mn and Si are investigated in the band structure, which shows a tendency of uphill diffusion during deformation process. The results show that the volume fraction of carbides varies with the increased straining. The results also show that deformation causes the fragmentation, dispersion of pearlite in the dendrites and the dissolution of spheroidized carbides in the band structure.
Place, publisher, year, edition, pages
Trans Tech Publications Inc., 2013. 171-176 p.
, Defect and Diffusion Forum, ISSN 1012-0386 ; 334-335
cast structure, carbide, diffusion, plastic deformation
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-123134DOI: 10.4028/www.scientific.net/DDF.334-335.171ISI: 000317868600030ScopusID: 2-s2.0-84879812165OAI: oai:DiVA.org:kth-123134DiVA: diva2:625362
8th International Conference on Diffusion in Solids Liquids (DSL 2012), JUN 25-29, 2012, Istanbul, Turkey
QC 201306042013-06-042013-06-032013-11-04Bibliographically approved