Effect of helical rolling on structure and fatigue life of 09Mn2Si pipe steel

I. V. Vlasov, N. S. Surikova, RAS - Institute of Strength Physics and Materials Science Branch, I. P. Mishin, A. V. Yakovlev, J. F. Gomorova

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The structure and mechanical properties of ductile ferrite-pearlite 09Mn2Si steel after helical rolling (HR) were studied. It has been shown that five passes of the helical rolling (with a gradual temperature decrease at each pass) resulted in a finely dispersed structure formation in the rod surface layer (up to ~1 mm thick). This indicated the development of intensive plastic deformation there. At the same time, a lamellar structure consisting of thin elongated ferrite grains has formed in the underlying layers. The largest strain hardening was evident in the surface layer up to 3 mm thick. A yield tooth and plateau were evident on plastic flow curve. The length of the yield plateau was increased up to 2 times compared to as-received steel. This was accompanied with tensile strength increasing by 30%, while the elongation at break decreased. Data of cyclic testing have shown that fatigue life of the HR-treated samples increased by 3.8 times. The highest fatigue durability was characteristic for specimens cut out from the core of HR processed rod.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology
EditorsVictor E. Panin, Vasily M. Fomin
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735440463
DOIs
Publication statusPublished - 14 Dec 2020
EventInternational Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020 - Tomsk, Russian Federation
Duration: 5 Oct 20209 Oct 2020

Publication series

NameAIP Conference Proceedings
Volume2310
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020
CountryRussian Federation
CityTomsk
Period5.10.209.10.20

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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