Severe Plastic Deformation of Large-Scale Nb-Microalloyed Steel Billet by Multi-Directional Forging Process

被引：3
作者：
Farahat, Ahmed I. Z. [1 ]
El-Morsy, Abdel-Wahab [2 ,3 ]
El-Bitar, Taher A. [1 ]
机构：
[1] Cent Met R&D Inst, Helwan, Egypt
[2] King Abdulaziz Univ, Fac Eng Rabigh, Dept Mech Engn, Rabigh 21911, Saudi Arabia
[3] Helwan Univ, Fac Eng Helwan, Dept Mech Engn, Cairo 11792, Egypt
来源：
STEEL RESEARCH INTERNATIONAL | 2014年 / 85卷 / 05期
关键词：
severe plastic deformation; multi-directional hot forging; unidirectional hot forging; Nb-microalloyed steel; grain refinement; MECHANICAL-PROPERTIES; MICROSTRUCTURE; ALLOY; TEXTURE; EVOLUTION; EXTRUSION;
D O I：
10.1002/srin.201300265
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
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 (approximate to 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.
引用
收藏
页码：844 / 850
页数：7
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