Influence of scale formation on Copper enrichment behaviour in continuously cast slab

Nan Wang, Shan Yu, Xiaoao Li, Jianhua Xin, Guanghao Chen, Min Chen, Cuihuan Huang

Research output: Chapter in Book/Conference Proceeding/ReportConference Paper published in a bookpeer-review

Abstract

Copper enrichment behavior in continuously cast slab induced by scale formation after continuous cooling in H2O vapor atmosphere and consecutively in air has been experimentally investigated by combining with SEM-EDS analysis, for the purpose to examine the effects of initial slab surface temperature and contents of copper and nickel. For Slab 1 with copper content of 0.1 percent, no visible copper enrichment is found at scale-substrate interface irrespective of the various scale microstructures formed at different initial slab surface temperatures. For Slab 2 with higher contents of copper and nickel, copper-rich phase accumulates and stays at scalesubstrate interface under the condition of lower initial slab surface temperature; while Cu-rich phase in the porous scale formed at higher initial slab surface temperature is noted with simultaneous Ni-enrichment appearing in front of the steel-scale interface. Both a porous scale and high nickel content work together to provide pores for copper-rich phase migration away from interface and occlude within the scale layer.

Original languageEnglish
Title of host publicationTMS Annual Meeting
EditorsAntoine Allanore, Laura Bartlett, Cong Wang, Lifeng Zhang, Jonghyun Lee
PublisherMinerals, Metals and Materials Society
Pages5-10
Number of pages6
EditionCONFCODENUMBER
ISBN (Electronic)9781119225782
DOIs
Publication statusPublished - 2016
Externally publishedYes
EventEPD Congress 2016 - TMS 2016: 145th Annual Meeting and Exhibition - Nashville, United States
Duration: 14 Feb 201618 Feb 2016

Publication series

NameTMS Annual Meeting
NumberCONFCODENUMBER
Volume0

Conference

ConferenceEPD Congress 2016 - TMS 2016: 145th Annual Meeting and Exhibition
Country/TerritoryUnited States
CityNashville
Period14/02/1618/02/16

Keywords

  • Continuously cast slab
  • Copper enrichment
  • Initial slab surface temperature
  • Nickel content
  • Scale formation

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