A model for prediction of flow behavior and temperature distribution during warm rolling of a low carbon steel

Study of grain refinement has developed to improving the mechanical properties of low carbon steel. Wedge shaped slab of low carbon steel were deformed through warm rolling methods of 500, 550, and 600oC to produce a finer ferrite grains. The thickness reduction of deformation is 80, 75, 67 and 50% .Dynamic recrystallizations were confirmed at warm working temperature in this study. Grains size which obtained through this process could improve the hardness and its mechanical properties and also its performance in corrosive environment. The smallest grain size was obtain from 80% deformation is 5.2 µm and the tensile strength is 817.65 MPa. Its gives the evidence that warm rolling can use to produce the fine grain at warm temperature of 600oC.

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Effect of Hydrogen Charging on Microstructure Morphology of Warm Rolled Low Carbon Steel

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.418-420.1076 ◽

2011 ◽

Vol 418-420 ◽

pp. 1076-1080

Author(s):

Rini Riastuti ◽

Purnama Riyanti ◽

Dedi Priadi ◽

Eddy S. Siradj

Keyword(s):

Grain Size ◽

Carbon Steel ◽

Cathodic Protection ◽

Bulk Material ◽

Low Carbon Steel ◽

Warm Rolling ◽

Reduction Reaction ◽

Low Carbon ◽

Hydrogen Charging ◽

Microstructure Morphology

Warm rolled deformation is one of deformation technique to improve the strength of steels through the refining grain size of ferritic microstructure. In application, low carbon steel which used in structural industry need some protection against corrosion attack, cathodic protection is usually applied combining with coating. Cathodic protection creates reduction reaction which produces hydrogen, and the hydrogen atom may diffuse into the crystal lattice lead to the Hydrogen Induced Cracking. The present study is to observe the morphology of microstructure influenced by hydrogen charging as the source of hydrogen which attacks the steel surface, and observed by Optical Microscopy and Scanning Electron Microscopy. After warm rolling of 650oC and 35% deformation, ferrite grain size is smaller than bulk material and the hardness value increasing. After tensile test of hydrogen charged steel found the ductile fracture, it means the smaller the ferrite grains size, the resistance of hydrogen attack is increase.

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Dynamic strain aging and serrated flow behavior of Cr-Ti-B low carbon steel during warm deformation

Materials Characterization ◽

10.1016/j.matchar.2020.110828 ◽

2021 ◽

Vol 172 ◽

pp. 110828

Author(s):

Ankang Huang ◽

Zhigang Wang ◽

Xin Liu ◽

Qiangqiang Yuan ◽

Jieyun Ye ◽

...

Keyword(s):

Carbon Steel ◽

Dynamic Strain Aging ◽

Strain Aging ◽

Flow Behavior ◽

Low Carbon Steel ◽

Dynamic Strain ◽

Low Carbon ◽

Warm Deformation ◽

Serrated Flow

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Simulation of Temperature Field of TIG Welding Using FDM

Volume 6: Materials and Fabrication, Parts A and B ◽

10.1115/pvp2009-77697 ◽

2009 ◽

Author(s):

D. H. Tailor ◽

K. N. Srinivasan ◽

S. A. Channiwala ◽

M. Sohel M. Panwala

Keyword(s):

Temperature Field ◽

Temperature Distribution ◽

Carbon Steel ◽

Low Carbon Steel ◽

Pressure Vessels ◽

Thin Plates ◽

Transient Temperature ◽

Low Carbon ◽

Butt Welding ◽

Gtaw Process

Welding is one of the most important material-joining processes widely used in industry. Low carbon steel and stainless steel with thin plates are widely used in the fabrication of pressure vessels and other components. Thin plates are joints together by the Tungsten inert gas welding (GTAW) methods. Temperature distribution that occurs during welding affects the microstructure, mechanical properties and the residual stresses that will be present in the welded material. This paper discusses the development of a model for the temperature distribution during butt welding at different heat inputs using Finite difference method (FDM). The model is created from first principles of heat transfer and utilizes contact conduction that is a function of temperature, Gaussian heat distribution, and many material properties that vary with temperature. The temperature distribution curves obtained with this model are presented. This transient temperature field has been validated with experimentation of measuring temperature during welding of butt welded of low carbon steel using GTAW process. Using this FDM code, the range of error between the model and experimental results is −11.21 to 2.63%, demonstrating the accuracy of the model.

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