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Severe Plastic Deformation of Large‐Scale Nb‐Microalloyed Steel Billet by Multi‐Directional Forging Process
Author(s) -
Farahat Ahmed I. Z.,
ElMorsy AbdelWahab,
ElBitar Taher A.
Publication year - 2014
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201300265
Subject(s) - forging , equiaxed crystals , materials science , microstructure , microalloyed steel , metallurgy , ultimate tensile strength , deformation (meteorology) , optical microscope , severe plastic deformation , scanning electron microscope , composite material , austenite
The microstructural and the tensile properties of Nb‐microalloyed steel billet subjected to severe deformation processing were investigated. The steel samples in the form of as‐cast were severely deformed using multi‐directional hot forging process to approximately accumulated strain (∼4). The microstructure and tensile properties of multi‐directional forging samples were compared with those of the unidirectional forging (UDF) samples. Both optical and scanning electron microscopy examinations showed that the grain size is smaller after multi‐directional forging in comparison with UDF. In addition, the microstructure appears to be more homogeneous and generally more equiaxed after multi‐directional forging processing.