scholarly journals Tailoring Strength and Ductility of a Cr-Containing High Carbon Steel by Cold-Working and Annealing

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4136
Author(s):  
Jing Wang ◽  
Yongfeng Shen ◽  
Yan Liu ◽  
Fuguo Wang ◽  
Nan Jia
Keyword(s):  
Carbon Steel ◽  
Cold Rolling ◽  
High Carbon Steel ◽  
Cold Drawing ◽  
High Yield ◽  
Recrystallization Annealing ◽  
Stress And Strain ◽  
High Carbon ◽  
Fe Method ◽  
Good Ductility

SEM, TEM characterizations, in combination with tensile tests, provided an intriguing observation that ultra-high-strength and good ductility could be achieved simultaneously by changing the ratio of large and small precipitates in high-carbon steel (1.0C-1.5Cr-0.31Mn-0.20Si, wt %). The high yield strength of 670 MPa, tensile-stress of 740 MPa, and good ductility (elongation of 26%) were obtained by adopting spheroidization annealing, cold rolling, recrystallization annealing, and cold drawing. This led to nanosized precipitates with a large ratio of big size to the small size of 0.28, promoting high dislocation storage of 1.39 × 1014 m−2. In addition, the finite element (FE) method was used to simulate the cold-rolling process, and the largest stress and strain were 830 MPa and 0.6 at a depth of 3 mm after the fourth pass of the 0.10C-1.50Cr steel, respectively. The stress and strain accumulation in the top layer was potentially caused by severe plastic deformation, as well as attrition rendered by the rollers. This explained the emergence of dense low-angle grain boundaries in the region close to the surface of the cold rolled steel.

scholarly journals Effect of Cold-Rolling Reductions on Planar Anisotropy of r-Value in Cold-Rolled High Carbon Steel Sheets

2005 ◽  
Vol 69 (5) ◽  
pp. 421-428 ◽  
Author(s):  
Takeshi Fujita ◽  
Nobuyuki Nakamura ◽  
Toshiaki Urabe ◽  
Kaneharu Okuda ◽  
Yoshihiro Hosoya
Keyword(s):  
Carbon Steel ◽  
Cold Rolling ◽  
High Carbon Steel ◽  
High Carbon ◽  
Planar Anisotropy ◽  
Steel Sheets ◽  
Cold Rolled ◽  
R Value

PVD coatings for mill rolls for cold rolling of high carbon steel strips—Laboratory tests

Wear ◽  
2013 ◽  
Vol 306 (1-2) ◽  
pp. 103-112 ◽  
Author(s):  
Choumad Ould ◽  
Xavier Badiche ◽  
Pierre Montmitonnet ◽  
Yves Gachon
Keyword(s):  
Carbon Steel ◽  
Cold Rolling ◽  
Laboratory Tests ◽  
High Carbon Steel ◽  
Pvd Coatings ◽  
High Carbon ◽  
Steel Strips

scholarly journals The Structural and Strength Changes Resulting from Modification of Heat Treatment of High Carbon Steel

2016 ◽  
Vol 61 (2) ◽  
pp. 971-976 ◽  
Author(s):  
D. Grygier ◽  
M. Rutkowska-Gorczyca ◽  
R. Jasiński ◽  
W. Dudziński
Keyword(s):  
Heat Treatment ◽  
Fatigue Strength ◽  
Carbon Steel ◽  
High Carbon Steel ◽  
Cold Drawing ◽  
Pearlitic Steel ◽  
High Carbon ◽  
Plastic Working ◽  
Treatment Results ◽  
Plastic Properties

Abstract Pearlitic steels containing from some 0,8 to 0,95% C belong to the group of unalloyed steels intended for cold drawing or rolling. One of the problems discussed in literature is cracking of pearlitic steel subjected to plastic working, caused by high brittleness of the lamellar precipitations of hard cementite. This issue is extremely important because it affects significantly reduce fatigue strength. The paper presents proposals to modify the process of heat treatment, results in getting a steel with spheroidal structure characterized by better plastic properties, in order to eliminate this problem.

Development on Microalloyed High Carbon Steel Used for Fracture Splitting Connecting Rods

2010 ◽  
Vol 152-153 ◽  
pp. 301-308 ◽  
Author(s):  
Xian Zhong Zhang ◽  
Qi Zhou Cai ◽  
Gui Feng Zhou ◽  
Qing Feng Chen ◽  
Yu Zhang Xiong
Keyword(s):  
Carbon Steel ◽  
Nonmetallic Inclusions ◽  
High Carbon Steel ◽  
Splitting Method ◽  
Lamellar Spacing ◽  
Tensile Tests ◽  
High Yield ◽  
Connecting Rod ◽  
High Carbon ◽  
Fracture Splitting

The fracture splitting method is being increasingly used for manufacturing connecting rods that are made of the powder forging material, high-carbon steel, etc., which are comparatively easy to fracture, in order to improve the accuracy and productivity. In this paper, a microalloyed high carbon steel used for fracture splitting connecting rod is developed by the process “EAF-EBT-LF-CC-CR”. The steel microstructure, nonmetallic inclusions, precipitated phases, mechanical property and fracture surfaces are investigated by microscope, SEM and TEM. The results show that the steel is constituted of pearlite and a small mount of ferrite, the nonmetallic inclusions in the steel include MnS, Al-rich (taken to be Al2O3) and Al-Ca-rich (taken to be CaO-Al2O3) particles. The precipitations mainly are VC, VN, (Mn, Cu)S, etc. these precipitations are beneficial to fine the pearlite group, short lamellar spacing of pearlite and improve the strengthening of the microalloyed high carbon steel. The tensile tests indicate that the microalloyed high carbon steel has high yield strength, ultimate tensile strength (UTS), but low elongation and contraction of area. It is required for heavier loads, higher performance of automobile engine and less distortion on fracture splitting. The fracture surface of connecting rod shows distinct brittle fracture character and it is beneficial to improve fracture splitting performance.

Effect of V and N on Microstructures and Properties of Cold Drawn High Carbon Steel

2012 ◽  
Vol 174-177 ◽  
pp. 1141-1146 ◽  
Author(s):  
Peng Zhou ◽  
Hong Yu Liu ◽  
Jianhua Liu ◽  
Xiaolong Chen
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Volume Fraction ◽  
True Strain ◽  
High Carbon Steel ◽  
Interlamellar Spacing ◽  
Cold Drawing ◽  
High Carbon ◽  
Comprehensive Properties ◽  
Pearlite Colony

In order to enhance the strength of cold drawn high carbon steel and improve its comprehensive properties ,the law of change in microstructures and properties of high carbon steel with various contents of V and N were investigated .The size of pearlite colony，interlamellar spacing of pearlite and mechanical properties with various contents of V and N were measured; the change of magnetic properties of wires with different cold drawing strains were measured by VSM. It is shown that V can decrease the size of pearlite colony and interlamellar spacing of pearlite when V content is less than 0.06 wt %; N can decrease the size of pearlite colony and increase slightly the interlamellar spacing of pearlite. The tensile strength is enhanced with increasing V or N content, but V decrease plasticity of wire and N has little effect on it. The cementite in wire is dissolved with increasing cold drawing strain. The volume fraction of cementite is decreased to 4.4%，dissolution of 7.8%，as the true strain is increased up to 3.19.

Texture Evolution during Cold Rolling of Low and High Carbon Steel. Measurement and Simulation

2005 ◽  
Vol 495-497 ◽  
pp. 369-374 ◽  
Author(s):  
Artur Walentek ◽  
Xiahua Hu ◽  
Marc Seefeldt ◽  
Paul van Houtte
Keyword(s):  
Experimental Data ◽  
Carbon Steel ◽  
Cold Rolling ◽  
Texture Evolution ◽  
High Carbon Steel ◽  
Lamellar Microstructure ◽  
Pearlitic Steel ◽  
Taylor Model ◽  
High Carbon ◽  
Good Agreement

This paper presents simulations of the texture development during cold rolling of fully pearlitic steel. In order to investigate the importance of including microstructural aspects into texture simulations the calculations were carried out with the FC Taylor Pearlite model which takes the lamellar microstructure into account and with the FC Taylor and LAMEL model which are dedicated for one phase materials. The results are compared with those for ULC steel. For both materials the LAMEL model results are in good agreement with experimental data, while for the pearlitic steel, the FC Taylor Pearlite model improves the predictions only slightly with respect to the FC Taylor model.

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