High Carbon Steel Microcracking Control During Hardening

1984 ◽  
Vol 106 (3) ◽  
pp. 253-256 ◽  
Author(s):  
J. Lyman
Keyword(s):  
Carbon Steel ◽  
High Carbon Steel ◽  
Low Alloy Steels ◽  
Austenitizing Temperature ◽  
High Carbon ◽  
Tempering Temperature ◽  
Aisi 52100 ◽  
Alloy Steels ◽  
Short Time

When high carbon, low alloy steels, such as AISI 52100, are conventionally quenched or marquenched from an austenitizing temperature that dissolves all of the carbon in the austenite, many of the martensite crystals in the quenched microstructure are fractured or microcracked. This paper describes a process in which a limited amount of martensite is formed by quenching the steel to a temperature between the Ms temperature and conventional quench temperatures. This martensite is then tempered for a short time to toughen it before again cooling the steel to complete the formation of martensite from austenite. When the limited amount of martensite formed, and intermediately tempered, and the martensite formed on cooling from the intermediate tempering temperature are appropriately balanced by the processing, micro-cracking is essentially avoided. The process can be done in equipment and with procedures commonly used commercially.

Effect of Tempering on Mechanical Properties and Corrosion Rate of Medium and High Carbon Steel

2013 ◽  
Vol 685 ◽  
pp. 81-85
Author(s):  
Mohamed A. Gebril ◽  
M.S. Aldlemey ◽  
Abdessalam F. Kablan
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Corrosion Rate ◽  
High Carbon Steel ◽  
Internal Stresses ◽  
High Carbon ◽  
Tempering Temperature ◽  
Multiple Phase ◽  
Mechanical Properties And Corrosion ◽  
Martensite Structure

The tempering process of medium and high carbon steel using quenching in water as quenching medium with different tempering temperatures has been investigated. The samples were quenched to room temperature in water. The mechanical properties and corrosion rate of the quench and tempering samples were measured. The result shows that hardness value of the medium and high carbon steel increased due to formation of martensite structure which is very strong phase but it is normally very brittle, so it is necessary to modify the mechanical properties and relieve internal stresses by heat treatment in the range 100-700°C. The experimental results revealed that mechanical properties of selective alloy were significantly changed by temper treatment. By increasing the tempering temperature, hardness and ultimate tensile strength are gradually decreased and ductility was improved. Moreover, the corrosion rate has been studied and shown within multiple phase structure corrosion rate increased more than martensite structure even its stressed structure.

SAE 1078

Alloy Digest ◽  
1980 ◽  
Vol 29 (5) ◽  
Keyword(s):  
Carbon Steel ◽  
High Carbon Steel ◽  
High Surface ◽  
Surface Hardness ◽  
Heat Treating ◽  
Austenitizing Temperature ◽  
High Carbon ◽  
Agricultural Equipment ◽  
Steel Mills ◽  
Quenching And Tempering

Abstract SAE 1078 is high-carbon steel of low hardenability. It can be hardened by quenching from the austenitizing temperature into oil or water; care must be exercised to prevent cracking when quenching into water. This steel develops high surface hardness and a soft core on quenching and tempering lightly. It has good wear resistance. Its many uses include agricultural equipment, tools, springs and machinery parts. 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, and joining. Filing Code: CS-83. Producer or source: Carbon steel mills.

scholarly journals Material and method selection for increasing the wear resistance of construction machines components

2020 ◽  
Vol 17 (4) ◽  
pp. 464-475 ◽  
Author(s):  
A. P. Scherbakov
Keyword(s):  
Plastic Deformation ◽  
Wear Resistance ◽  
High Temperature ◽  
Carbon Steel ◽  
High Carbon Steel ◽  
Strength Properties ◽  
Structural Steels ◽  
Cold Plastic Deformation ◽  
High Carbon ◽  
Alloy Steels

Introduction. The article examines the problem of choosing a material and method for increasing the wear resistance of construction machines elements. The performance of construction machines is affected by the reliability of the parts used. The selection of materials for their manufacture allows to calculate the probability of how such elements will affect its ability to work and productivity.Materials and methods. In the process of determining the material and the method for increasing the wear resistance of construction machines, structural steels with various chemical compositions were selected: lowcarbon 08ps (as a model material), 10, 20.30, St3 and low-alloy steels 09G2S and 10HSND, as well as high-carbon steel 65G and boron steel 30MnB5. The methods as high temperature annealing, normalization, injection and high temperature release, thermocyclic processing, cold plastic deformation, thermocyclic processing of steels after cold plastic deformation were used.Results. During the experiment, it was found that both for low-carbon 08ps, 10, 20, 30, St3, and for low-alloy structural steels 09G2S and 10HSND, as well as for high-carbon steel 65G and for boron-containing steel 30MnB5, an increase in the number of TCT cycles (thermal cycling) leads to an increase in the strength properties of the metal. With an increase in the number of cycles over 3-6, the increase in strength properties slows down significantly. Conclusion. In contrast to heat treatment, TCO allows to identify the positive effect of alloying on strength and plastic properties to a greater extent. At the same time, significantly increasing the strength and plasticity, it is possible to obtain previously unattainable values of the work of destruction of alloy steels in the process of various types of loading. Accordingly, the preliminary preparation of steel for the production of individual elements of machines and mechanisms will increase their strength and wear resistance.

Internal friction in a martensitic high-carbon steel

2001 ◽  
Vol 81 (12) ◽  
pp. 2797-2808
Author(s):  
Rustem Bagramov, Daniele Mari, Willy Benoi
Keyword(s):  
Carbon Steel ◽  
Internal Friction ◽  
High Carbon Steel ◽  
High Carbon

Weldability of electroslag remelted high-carbon steel at flash-butt welding

2019 ◽  
Vol 2019 (3) ◽  
pp. 29-37
Author(s):  
A.A. Polishko ◽  
◽  
L.B. Medovar ◽  
A.P. Stovpchenko ◽  
E.V. Antipin ◽  
...  
Keyword(s):  
Carbon Steel ◽  
High Carbon Steel ◽  
High Carbon ◽  
Butt Welding

On the Measurement of Modulus in Torsion of High Carbon Steel Wire by Torsion Tester

1967 ◽  
Vol 53 (11) ◽  
pp. 1342-1344
Author(s):  
Akira NAKAGAWA ◽  
Akihiro SUZUKI ◽  
Tadatsugu KISHIGAMI ◽  
Norio NAGAI
Keyword(s):  
Carbon Steel ◽  
Steel Wire ◽  
High Carbon Steel ◽  
High Carbon

UNS G10600

Alloy Digest ◽  
1991 ◽  
Vol 40 (3) ◽  
Keyword(s):  
Fracture Toughness ◽  
Carbon Steel ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Carbon Steel ◽  
Heat Treating ◽  
High Carbon ◽  
Steel Mills

Abstract UNS No. G 10600 is a high-carbon steel of low hardenability. It may be used in the as-rolled, annealed, normalized or quenched and-tempered condition, depending on the desired properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: CS-129. Producer or source: Carbon steel mills.

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