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

Результат исследований: Материалы для книги/типы отчетовМатериалы для конференции

Аннотация

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.

Язык оригиналаАнглийский
Название основной публикацииProceedings of the International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology
РедакторыVictor E. Panin, Vasily M. Fomin
ИздательAmerican Institute of Physics Inc.
ISBN (электронное издание)9780735440463
DOI
СостояниеОпубликовано - 14 дек 2020
СобытиеInternational Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020 - Tomsk, Российская Федерация
Продолжительность: 5 окт 20209 окт 2020

Серия публикаций

НазваниеAIP Conference Proceedings
Том2310
ISSN (печатное издание)0094-243X
ISSN (электронное издание)1551-7616

Конференция

КонференцияInternational Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020
СтранаРоссийская Федерация
ГородTomsk
Период5.10.209.10.20

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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