scholarly journals EFFECT OF STRAIN RATE ON HOT DUCTILITY OF LOW CARBON STEEL

2015 ◽  
Vol 21 (2) ◽  
Author(s):  
Rudolf Mišičko ◽  
Margita Longauerová ◽  
Marek Vojtko ◽  
Jana Konrádyová ◽  
Sandra Ahmidat Fedáková
Keyword(s):  
Carbon Steel ◽  
Strain Rate ◽  
Low Carbon Steel ◽  
Hot Ductility ◽  
Low Carbon

Prediction of Flow Curves and Micro-Structural Evolution in Strain Induced Dynamic Transformation of Low Carbon Steel

2006 ◽  
Vol 510-511 ◽  
pp. 518-521 ◽  
Author(s):  
Jae-Young An ◽  
Young Jae Kwon ◽  
S.I. Kim ◽  
Duk Lak Lee ◽  
Yeon Chul Yoo
Keyword(s):  
Carbon Steel ◽  
Strain Rate ◽  
Low Carbon Steel ◽  
Structural Evolution ◽  
Low Carbon ◽  
Flow Curves ◽  
Dynamic Transformation ◽  
Stress Curve ◽  
Flow Stress Curve ◽  
Softening Process

The relationships between flow stress curve and microstructure evolution in strain induced dynamic phase transformation (SIDT) of low carbon steel (0.22wt.%) were quantitatively investigated. The deformation was carried out at just above Ar3 temperature (710°C) as a function of strain rate (0.01-5/sec). The softening process of SIDT was well agreed with calculated result derived from Avrami’s and constitutive equation at higher strain rate than 0.5/sec. However, the calculated results differed from the experimental curve at strain rate of less than 0.2/sec. This is due to fact that the dynamic transformation from austenite to ferrite can not be completed owing to less stored energy during hot deformation.

scholarly journals Effect of Strain-Rate and Temperature on Internal Structure of Low Carbon Steel Deformed in Tension Test

1971 ◽  
Vol 20 (214) ◽  
pp. 827-833
Author(s):  
Motoaki FUJINO ◽  
Tetsuo NITTA ◽  
Masahiro YAMAMOTO ◽  
Shuji TAIRA
Keyword(s):  
Carbon Steel ◽  
Strain Rate ◽  
Internal Structure ◽  
Low Carbon Steel ◽  
Tension Test ◽  
Low Carbon

Experimental study and prediction of deformation behavior of low carbon steel at low strain rate and high temperature

2013 ◽  
Vol 58 (10) ◽  
pp. 940-945 ◽  
Author(s):  
Wei ZHOW ◽  
GuiNan ZHANG ◽  
Ying XIA ◽  
TongBin SHAO ◽  
Xue Fei CHEN ◽  
...  
Keyword(s):  
Experimental Study ◽  
High Temperature ◽  
Carbon Steel ◽  
Strain Rate ◽  
Deformation Behavior ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Low Strain Rate

Electrochemical and Tension Tests Behavior of API 5L X60 Pipeline Steel in a Simulated Soil Solution

2013 ◽  
Vol 755 ◽  
pp. 153-161 ◽  
Author(s):  
Luis M. Quej-Aké ◽  
Ricardo Galván-Martínez ◽  
Antonio Contreras-Cuevas
Keyword(s):  
Carbon Steel ◽  
Strain Rate ◽  
Soil Solution ◽  
Electrochemical Impedance ◽  
Pipeline Steel ◽  
Failure Process ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Tension Tests ◽  
Before And After

In this work electrochemical impedance spectroscopy (EIS) and slow strain rate tests (SSRT) were used for the evaluation of API 5L X60 carbon steel in contact with a simulated soil solution called NS4. EIS monitoring before and after performing the tension tests was carried out. SSRT were carried out in NS4 solution at room temperature to simulate dilute ground water that has been found associated with stress corrosion cracking (SCC) of low carbon steel pipelines. A strain rate of 1x10-6 sec-1 was used. According to the analysis of SSRT, the X60 pipeline steel is highly resistant to SCC. In order to perform the electrochemical test, two working electrodes were considered, a complete specimen, before the SSRT and a fractured specimen after the SSRT. The analyses of results show that the electrochemical response was different in each samples. The corrosion rate (CR) obtained by the two corrosion techniques revealed that the CR of the fractured specimen was higher than the CR of the complete specimen. This behavior is attributed to the fact that the fractured specimen present a high degree of tortuosity and this condition activate the corrosion process. In addition, according to the cathodic Tafel slope, the reduction reacction was influenced by a difusion process. A combine fracture type in SSRT was observed: ductil and brittle with a transgranular appearance. Some pits and internal cracks close to the fracture zone were observed. The failure process and mechanism of X60 steel in NS4 solution are controlled by dissolution and hydrogen embrittlement.

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