Atomic interactions between Si and Mn during eutectoid transformation in high-carbon pearlitic steel

2019 ◽  
Vol 126 (24) ◽  
pp. 245102
Author(s):  
Linghui Huang ◽  
Rui Zhang ◽  
Xuefeng Zhou ◽  
Yiyou Tu ◽  
Jianqing Jiang
2022 ◽  
Vol 905 ◽  
pp. 83-87
Author(s):  
Lu Lu Feng ◽  
Wei Wen Qiao ◽  
Jian Sun ◽  
De Fa Li ◽  
Ping Ping Li ◽  
...  

The continuous cooling transformation behavior of high-carbon pearlitic steel was studied by employing optical microscopy, scanning electron microscopy, and the Vickers hardness test. The results show that the microstructure of the test steel is composed of proeutectoid cementite and lamellar pearlite in the cooling rate range of 0.05–2 °C/s and lamellar pearlite in the range of 2–5 °C/s. Further, martensite appears at 10 °C/s. With the increase in the cooling rate, the Vickers hardness of the test steel first decreases and then increases. In the industrial production of high-carbon pearlite steel, the formation of proeutectoid cementite at a low cooling rate needs to be avoided, and at the same time, the formation of martensite and other brittle-phase at a high cooling rate needs to be avoided.


2011 ◽  
Vol 111 (1) ◽  
pp. 95-109 ◽  
Author(s):  
A. V. Makarov ◽  
R. A. Savrai ◽  
V. M. Schastlivtsev ◽  
T. I. Tabatchikova ◽  
I. L. Yakovleva ◽  
...  

1997 ◽  
Vol 37 (7) ◽  
pp. 715-720 ◽  
Author(s):  
Toshihiro Tsuchiyama ◽  
Yoshinori Ono ◽  
Setsuo Takaki

2016 ◽  
Vol 1139 ◽  
pp. 3-6 ◽  
Author(s):  
Bernadette Elliott-Bowman ◽  
Alexander C. Cook ◽  
Peter Brown ◽  
David Dye ◽  
Rong Shan Qin

Electropulsing treatment was applied to high carbon pearlitic steel to assess the effects of the treatment on microstructure and properties. Ferrite recrystallisation and cementite spheroidisation were induced in samples treated at pulse duration and frequency greater than 40μs and 50Hz, respectively. Ferrite grain size of electropulsed samples was refined compared to similarly annealed samples. The results are explained through a combination of heating and athermal dislocation and atomic mobility effects. With optimisation, electropulsing may offer an improved annealing processing method.


2016 ◽  
Vol 61 (2) ◽  
pp. 971-976 ◽  
Author(s):  
D. Grygier ◽  
M. Rutkowska-Gorczyca ◽  
R. Jasiński ◽  
W. Dudziński

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.


2007 ◽  
Vol 539-543 ◽  
pp. 4556-4561 ◽  
Author(s):  
Kyoo Young Lee ◽  
Young Roc Im ◽  
Leo Kestens ◽  
Gyo Sung Kim

The microstructural evolution and the softening behavior of hot rolled and 60% cold rolled 0.85wt% carbon pearlitic steels during spheroidization annealing have been investigated by using the textural and microstructural information contained in the Orientation Imaging Microscopy (OIM) scans. The local boundary energy map, recently suggested by the present authors, is used to monitor the changes of stored plastic strain energy distribution in ferrite during the annealing process, which shows that the spheroidization process of cementite is finished before the completion of recrystallization of the 60% cold-rolled high carbon pearlitic steel.


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