Manufacturing Science and Technology(CEASE PUBLICATION) Vol. 3(4), pp. 134 - 140
DOI: 10.13189/mst.2015.030410
Reprint (PDF) (1499Kb)

Study of the Effects of Micro- and Nanolayered Structures on Mechanical Response of Microalloyed Steels

Janusz Majta ^*, Krzysztof Muszka , Lukasz Madej , Marcin Kwiecien , Paulina Graca
Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Poland

ABSTRACT

The specimens of microalloyed ferrite and austenite were severally deformed by complex metal forming processing (accumulative angular drawing - AAD, wire drawing - WD, wire flattening - WF) up to a total effective strain of 2.86, at room temperature. Electron backscattered diffraction (EBSD) and digital microstructure representation (DMR) analysis have been used to compare the deformed microstructural evolution of both model materials. The high angle boundaries associated with the deformation bands were formed at the total accumulated strains of 1.8 ÷ 2.0 observed in the last passes of wire drawing. Then, ultrafine-grained and lamella structures were observed as a result of wire flattening. It was observed that the microalloyed ferrite refined more rapidly with work hardening than the microalloyed austenite. Evaluation of the processing route along with dislocation substructure co-operative relationship allows for design of ultrafine-grained and multilayered materials with controlled structure inhomogeneity in order to achieve desirable mechanical response.

KEYWORDS
Microalloyed Steel, Computer Modeling, Precipitation Strengthening, Work Hardening, Severe Plastic Deformation, Wire Drawing, Ultrafine-grained Materials

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Janusz Majta , Krzysztof Muszka , Lukasz Madej , Marcin Kwiecien , Paulina Graca , "Study of the Effects of Micro- and Nanolayered Structures on Mechanical Response of Microalloyed Steels," Manufacturing Science and Technology(CEASE PUBLICATION), Vol. 3, No. 4, pp. 134 - 140, 2015. DOI: 10.13189/mst.2015.030410.

(b). APA Format:
Janusz Majta , Krzysztof Muszka , Lukasz Madej , Marcin Kwiecien , Paulina Graca (2015). Study of the Effects of Micro- and Nanolayered Structures on Mechanical Response of Microalloyed Steels. Manufacturing Science and Technology(CEASE PUBLICATION), 3(4), 134 - 140. DOI: 10.13189/mst.2015.030410.