The deformation analysis of 1008 steel at 0.01/s strain rate

• Autorzy: Wolańska N. , Lis A. K.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The hot ductility investigations under strain rate 0.01/s were shown in this work. The investigations were carried out on the low carbon-manganese steel 1008 with addition of boron. Design/methodology/approach: The ductility of the steel was measured by reduction of area of fraction after the extension test in the temperature range from 700 to 1200 degrees centigrade. The test was carried out with strain rates 0.01/s, which is characteristic for the continuous casting process. Samples of examined steel were divided to two origin regions of COS slab: columnar grains and equiaxial grains. The microstructures analysis were carried out on samples sectioned with tensile direction at fracture. The straightness of 1008 steel was also observed. Findings: The received 40% and 23% ductility minimums of investigated steel for columnar and equiaxial grains respectively were found in the temperature range 800-950 degrees centigrade. These temperatures are connected with band straightening in the continues casting process. The ferrite-bainite and ferrite-pearlite microstructures after air cooling were observed. The straightness of investigated steel decreases with rising temperature. Practical implications: The temperature of hot ductility minimum of investigated low carbon steel with addition of boron corresponds with straightening temperature of the strand, which is taken place close to 900 degrees centigrade during continuous casting process. Originality/value: Available literature concerns investigations of low carbon steels but without boron addition, which expect to have strong influence on the position of the hot ductility minimum.

Słowa kluczowe

EN

ductility; hot ductility curves; true flow curves; deformation analysis; strains

PL

plastyczność; krzywe płynięcia plastycznego; analiza deformacji; naprężenia

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 25, nr 1
• Strony: 37--40
• Opis fizyczny: Bibliogr. 16 poz., fot., rys., tab.

Twórcy

autor

Wolańska N.

autor

Lis A. K.

• Institute of Materials Engineering, Faculty of Materials Processing Technology and Applied Physics, Częstochowa University of Technology, Al. Armii Krajowej 19, 42-200 Częstochowa, Poland,

Bibliografia

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