Prediction of ferrite grain size and tensile properties of a low carbon steel

2004 ◽  
Vol 20 (1) ◽  
pp. 106-110 ◽  
Author(s):  
M. Kazeminezhad ◽  
A. Karimi Taheri
Keyword(s):  
Grain Size ◽  
Carbon Steel ◽  
Tensile Properties ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Ferrite Grain Size

Texture Developments during Ferrite Refinement through Deformation-Enhanced Ferrite Transformation and Dynamic Recrystallization in Low Carbon Steel

2005 ◽  
Vol 475-479 ◽  
pp. 165-168 ◽  
Author(s):  
Ping Yang ◽  
Wang Yue Yang ◽  
Zu Qing Sun
Keyword(s):  
Grain Size ◽  
Carbon Steel ◽  
Dynamic Recrystallization ◽  
Recrystallization Texture ◽  
Low Carbon Steel ◽  
Deformation Texture ◽  
Low Carbon ◽  
Ferrite Transformation ◽  
Transformation Texture ◽  
Ferrite Grain Size

Texture evolutions are determined by XRD and EBSD techniques during ferrite refinement through deformation-enhanced ferrite transformation (DEFT) and dynamic recrystallization (DREX). Evidences of transformation texture, deformation texture and recrystallization texture during DEFT are provided and compared with the texture during DREX. The influence of pass-interval during DEFT on texture is illustrated. Results are discussed in terms of the influences of ferrite grain size and deforming temperature.

Microstructure and Mechanical Properties of Nb Alloyed Steel Processed by Hot Equal Channel Angular Extrusion

2016 ◽  
Vol 879 ◽  
pp. 2528-2531
Author(s):  
Akira Yanagida ◽  
Ryo Aoki ◽  
Masataka Kobayashi
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Carbon Steel ◽  
Equal Channel Angular Extrusion ◽  
Low Carbon Steel ◽  
Total Elongation ◽  
Low Carbon ◽  
Angular Extrusion ◽  
Ferrite Grain Size

A Nb alloyed low carbon steel was processed by hot equal channel angular extrusion (ECAE) and following transformation. The workpieces were heated up to the 960°C in the furnace for 10 min within the container block. Before extrusion, the die was preheated to 400oC. The workpiece was cooled in the die after ECAE process. 1 pass and 2 pass via route C were conducted at a speed of 32mm/s, the inter-pass time is about 2 sec. The sample of average ferrite grain size of about 2μm, a tensile strength of 800MPa, a total elongation about 20% is produced after 2 pass ECAE processed and subsequent cooling.

scholarly journals Prediction of Ferrite Grain Size after Warm Deformation of Low Carbon Steel.

1996 ◽  
Vol 36 (10) ◽  
pp. 1279-1285 ◽  
Author(s):  
A. Schmickl ◽  
D. Yu ◽  
C. Killmore ◽  
D. Langley ◽  
T. Chandra
Keyword(s):  
Grain Size ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Warm Deformation ◽  
Ferrite Grain Size

scholarly journals Strain Hardening of Low-Carbon Steel in the Area of Jerky Flow

2021 ◽  
pp. 65-75
Author(s):  
І. О Vakulenko ◽  
D. M Bolotova ◽  
S. V Proidak ◽  
B Kurt ◽  
A. E Erdogdu ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
Carbon Steel ◽  
Strain Hardening ◽  
Low Carbon Steel ◽  
Carbon Steels ◽  
Cold Plastic Deformation ◽  
Low Carbon ◽  
Jerky Flow ◽  
Ferrite Grain Size

Purpose. The aim of this work is to assess the effect of ferrite grain size of low-carbon steel on the development of strain hardening processes in the area of nucleation and propagation of deformation bands. Methodology. Low-carbon steels with a carbon content of 0.06–0.1% C in various structural states were used as the material for study. The sample for the study was a wire with a diameter of 1mm. The structural studies of the metal were carried out using an Epiquant light microscope. Ferrite grain size was determined using quantitative metallographic techniques. Different ferrite grain size was obtained as a result of combination of thermal and termo mechanical treatment. Vary by heating temperature and the cooling rate, using cold plastic deformation and subsequent annealing, made it possible to change the ferrite grain size at the level of two orders of magnitude. Deformation curves were obtained during stretching the samples on the Instron testing machine. Findings. Based on the analysis of stretching curves of low-carbon steels with different ferrite grain sizes, it has been established that the initiation and propagation of plastic deformation in the jerky flow area is accompanied by the development of strain hardening processes. The study of the nature of increase at dislocation density depending on ferrite grain size of low-carbon steel, starting from the moment of initiation of plastic deformation, confirmed the existence of relationship between the development of strain hardening at the area of jerky flow and the area of parabolic hardening curve. Originality. One of the reasons for decrease in Luders deformation with an increase of ferrite grain size of low-carbon steel is an increase in strain hardening indicator, which accelerates decomposition of uniform dislocations distribution in the front of deformation band. The flow stress during initiation of plastic deformation is determined by the additive contribution from the frictional stress of the crystal lattices, the state of ferrite grain boundaries, and the density of mobile dislocations. It was found that the size of dislocation cell increases in proportion to the diameter of ferrite grain, which facilitates the development of dislocation annihilation during plastic deformation. Practical value. Explanation of qualitative dependence of the influence of ferrite grain size of a low-carbon steel on the strain hardening degree and the magnitude of Luders deformation will make it possible to determine the optimal structural state of steels subjected to cold plastic deformation.

Effect of Ferrite Grain Size on Local Elongation in a Low Carbon Steel

PRICM ◽  
2013 ◽  
pp. 603-608
Author(s):  
N. Tsuchida ◽  
H. Nakano ◽  
T. Inoue
Keyword(s):  
Grain Size ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Ferrite Grain Size

New Approach for Multiplying the Strength and the Formability of Cold Rolled BCC Based Structure Steel through Ultra Fine Structure Technique

2020 ◽  
Vol 835 ◽  
pp. 141-148
Author(s):  
Hassan Bahaa-Eldin ◽  
Mamdouh Eissa ◽  
Ahmed Al-Sheikh ◽  
Mohamed Kamal El-Fawkhry ◽  
Taha Mattar
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Annealing Regime ◽  
Innovative Technique ◽  
Subcritical Annealing ◽  
Cold Rolled ◽  
Ferrite Grain Size

Reduction in grain size of bcc based structure steel is still highly concerned in the cold rolled sheet to attain superior mechanical properties. As long as, the reduction of weight is much considered in the structure purposes, the strength/weight ratio of steel is highly demanded. In this study, an innovative technique was applied to attain ferrite grain size with hundreds of nanometer, in tandem with preserving the mechanical properties. In this approach, the micro-alloyed low carbon steel resulted from the thermomechanical process was followed by subcritical annealing regime prior to the first critical transformation temperature. To identify the effect of a micro-alloying element as vanadium, and the effect of subcritical annealing regime on the low carbon steel, two low carbon steel was subjected to studying in this research. The results refer that applying a subcritical annealing regime for the micro-alloyed low carbon steel after hot compression at intercritical annealing temperature can lead for attaining hundreds of nanometer ferrite grain size, which has a powerful effect on promoting the strength of the steel to exceed 1200 Mpa, in one hand with preserving the formability up to 20% as uniform elongation. Unexpectedly, the fine grain size obtained after the innovative technique promotes the impact toughness at room temperature, which is attributed to the fineness and the spheroid morphology of the secondary phase in conjugation with bcc ferrite structure.

Effect of Asymmetric Rolling with Cone-Shaped Rolls on Microstructure and Tensile Properties of Low-Carbon Steel

2015 ◽  
Vol 1105 ◽  
pp. 149-153
Author(s):  
Toleu K. Balgabekov ◽  
Eldar M. Azbanbayev ◽  
Aristotel Z. Isagulov ◽  
Diana A. Isagulova ◽  
Nurlybek B. Zakariya ◽  
...  
Keyword(s):  
Grain Size ◽  
Carbon Steel ◽  
Tensile Properties ◽  
Low Carbon Steel ◽  
Middle Layer ◽  
Low Carbon ◽  
Asymmetric Rolling ◽  
Fine Grain ◽  
Average Grain Size ◽  
Different Temperatures

The effect of asymmetric rolling with cone-shaped rolls on ultra-fine grain evolution was investigated. To do this, low-carbon steel containing 0.15 % C (mass fraction) billet (h|b|l = 10|45|100 mm3) with the initial average grain size of 60 μm was deformed up to the thickness of 5mm in cone-shaped rolls with diameters ratio of 1.5, as well as in cylindrical rolls. Rolling was conducted at three different temperatures: 900 °C, 1000 °C and 1100 °C. Four passes of asymmetric rolling in cone-shaped rolls were given to gain thickness of 5 mm with total reduction of 61,7 %. It has been shown that during asymmetric rolling in cone-shaped rolls at low temperature of 900 °C grain size is smaller (0.092 μm – at the surface layer and 0.112 μm – at the middle layer) than that of 1000 °C and 1100 °C. Tensile properties of asymmetrically rolled specimen were much higher (580 MPa) in comparison to symmetrically rolled one (486 MPa).

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