Correlation between surface integrity of ground medium carbon steel with Barkhausen Noise parameters and magnetic hysteresis loop characteristics

2009 ◽  
Vol 30 (5) ◽  
pp. 1595-1603 ◽  
Author(s):  
M. Vashista ◽  
S. Paul
2019 ◽  
Vol 85 (12) ◽  
pp. 38-42
Author(s):  
S. G. Sandomirski

The main magnetic parameter sensitive to the structure of steel is the coercive force (Hc). However, the coercive force of steels with a carbon content more than 0.3% appeared unsuited for control of the tempering temperature (Tt), hardness (HRC), and mechanical properties of hardened products made of such steels due to non-monotonous character of Hc dependence on the tempering temperature after their quenching The goal of the study is to develop a method for control of the structural changes of medium-carbon steels that occur upon heat treatment proceeding from the information parameters generated using the coercive force Hc and the ratio KS of their residual magnetization (Mr) to the magnetization of technical saturation (Ms) in a practically important temperature range. The advantage of the developed approach compared to those based on measuring the relaxation magnetic parameters of steels is that the parameters Hc and KS can be measured using standard methods with the minimal relative errors of measurement (2 and 1%, respectively). We consider three different combinations of the parameters Hc and KS – H0, Hc1, and Hc2 — and analyzed their dependence on the tempering temperature and hardness of medium carbon steels C30 and C45. The parameters H0, Hc1, and Hc2 monotonously change as the hardness of medium-carbon steels decreases. The correlation coefficient between the values of H0, Hc1 and Hc2 and HRC £hardness of steel 30 in the range of 32  HRC  41 is 0.959, 0.965 and 0.978, respectively. The results obtained makes it possible to abandon the complex and inaccurate measurements of the relaxation magnetic parameters of steels when developing the methods and devices for magnetic structuroscopy, and focus on enhancing of the accuracy of measuring£ Hc and Mr/Ms ratio of the material.


2010 ◽  
Vol 19 (9) ◽  
pp. 1248-1255 ◽  
Author(s):  
Meghanshu Vashista ◽  
Shobhit Kumar ◽  
Amitava Ghosh ◽  
Soumitra Paul

2011 ◽  
Vol 495 ◽  
pp. 269-271
Author(s):  
K. Kosmas

Magnetic properties, namely B-H loops and Barkhausen noise, have been determined with respect to mechanical load in Armco steels. The monotonic response illustrated a clearly verified knee, corresponding to the initiation of plastic deformation.


2018 ◽  
Vol 18 (1) ◽  
pp. 125-135
Author(s):  
Sattar H A Alfatlawi

One of ways to improve properties of materials without changing the product shape toobtain the desired engineering applications is heating and cooling under effect of controlledsequence of heat treatment. The main aim of this study was to investigate the effect ofheating and cooling on the surface roughness, microstructure and some selected propertiessuch as the hardness and impact strength of Medium Carbon Steel which treated at differenttypes of heat treatment processes. Heat treatment achieved in this work was respectively,heating, quenching and tempering. The specimens were heated to 850°C and left for 45minutes inside the furnace as a holding time at that temperature, then quenching process wasperformed in four types of quenching media (still air, cold water (2°C), oil and polymersolution), respectively. Thereafter, the samples were tempered at 200°C, 400°C, and 600°Cwith one hour as a soaking time for each temperature, then were all cooled by still air. Whenthe heat treatment process was completed, the surface roughness, hardness, impact strengthand microstructure tests were performed. The results showed a change and clearimprovement of surface roughness, mechanical properties and microstructure afterquenching was achieved, as well as the change that took place due to the increasingtoughness and ductility by reducing of brittleness of samples.


Alloy Digest ◽  
1972 ◽  
Vol 21 (3) ◽  

Abstract AISI 1025 is a low-to-medium-carbon steel used in the hot-worked, cold-worked, normalized or water-quenched-and-tempered condition for general-purpose construction and engineering. It is also used for case-hardened components. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: CS-47. Producer or source: Carbon and alloy steel mills.


Alloy Digest ◽  
1980 ◽  
Vol 29 (2) ◽  

Abstract AISI 1551 is a medium-carbon steel containing relatively high manganese (0.85-1.15%) for a carbon steel. It can be used in the hot-rolled, annealed, normalized, cold-worked or liquid-quenched-and-tempered condition for numerous applications. It has a combination of good machinability and good workability. Its many uses include hand tools, machinery parts, springs and agricultural machinery. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: CS-80. Producer or source: Carbon steel mills.


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