EBSD characterization of deformed lath martensite in if steel

Z.A. Lv, Xiaodan Zhang, Xiaoxu Huang, Niels Hansen

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Abstract

Rolling deformation results in the transformation of a lath martensite structure to a lamellar structure characteristic to that of IF steel cold-rolled to medium and high strains. The structural transition takes place from low to medium strain, and electron backscatter diffraction analysis shows that the frequency of medium angle boundaries with misorientation angles of 5-10° decreases with increasing strain, while the frequencies of boundaries with angles in the ranges of 1-5° and 10-25° increase, resulting in the evolution of a bimodal misorientation angle distribution. The microstructural evolution and the strength are characterized for lath martensite rolled to a thickness reduction of 30%, showing that large changes in the misorientation take place, while the strain hardening rate is low.
Original languageEnglish
JournalI O P Conference Series: Materials Science and Engineering
Volume219
Number of pages8
ISSN1757-8981
DOIs
Publication statusPublished - 2017
Event38th Risø International Symposium on Materials Science - Technical University of Denmark , Roskilde, Denmark
Duration: 4 Sep 20178 Sep 2017

Conference

Conference38th Risø International Symposium on Materials Science
LocationTechnical University of Denmark
CountryDenmark
CityRoskilde
Period04/09/201708/09/2017

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