scholarly journals Improving the wear resistance of steel products by using non-standard heat treatment modes. Foundryproductionandmetallurgy

2021 ◽  
pp. 100-104
Author(s):  
D. M. Berdiev ◽  
A. A. Yusupov
Keyword(s):  
Crystal Structure ◽  
Heat Treatment ◽  
Wear Resistance ◽  
Heating Temperature ◽  
Low Alloy Steels ◽  
Standard Heat Treatment ◽  
Standard Temperature ◽  
Density Of Dislocations ◽  
Α Phase ◽  
Alloy Steels

The use of non-standard modes of heat treatment increases the density of dislocations in the crystal structure of the α-phase and increases the wear resistance of carbon, low-alloy steels under various friction conditions, which is comparable to the results when heated to a standard temperature (Ac3 + 30–50 °C). The preliminary extreme heating temperature is determined. After requenching at standard temperature and low tempering, the wear resistance of steels under various types of friction increases by up to 40 % compared to standard quenching.

Non-standard modes of heat treatment and their influence on the wear resistance of steel products

2021 ◽  
pp. 61-63
Author(s):  
Keyword(s):  
Crystal Structure ◽  
Heat Treatment ◽  
Wear Resistance ◽  
Dislocation Density ◽  
Carbon Steels ◽  
Low Alloy Steels ◽  
Standard Heat Treatment ◽  
Density Of Dislocations ◽  
Alloy Steels ◽  
Alloy Carbon

The wear resistance of low-alloy carbon steels after non-standard heat treatment, which increases the density of dislocations in the crystal structure of the a-phase, under different friction conditions is investigated. Keywords: wear resistance, heat treatment, hardness, carbon and low-alloy steels, dislocation density. [email protected]

Features of phase and structural transformations of structural steels under non-traditional modes of heat treatment

2020 ◽  
pp. 63-65
Author(s):  
D.M. Berdiev ◽  
M.A. Umarova ◽  
R.K. Toshmatov
Keyword(s):  
Crystal Structure ◽  
Heat Treatment ◽  
Extreme Temperature ◽  
High Hardness ◽  
Structural Transformations ◽  
Structural Steels ◽  
Low Alloy Steel ◽  
Standard Temperature ◽  
Density Of Dislocations ◽  
Α Phase

It is determined, that during heat treatment of structural steels with heating to an extreme temperature during quenching or normalization, the increase in the density of dislocations in the crystal structure of the α-phase is comparable to the density when heated to a standard temperature (Ac3 + 30÷50 °C), and its change depends on the amount of carbon and chemical alloying elements in steel. Keywords heat treatment, high hardness, dislocation density, extreme temperature, low alloy steel. [email protected].

scholarly journals Effect of tempering heat treatment on the CO2 corrosion resistance of quench-hardened Cr-Mo low-alloy steels for oil and gas applications

2019 ◽  
Vol 154 ◽  
pp. 36-48 ◽  
Author(s):  
Clara. Escrivà-Cerdán ◽  
Steve W. Ooi ◽  
Gaurav R. Joshi ◽  
Roberto Morana ◽  
H.K.D.H. Bhadeshia ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
Oil And Gas ◽  
Co2 Corrosion ◽  
Low Alloy Steels ◽  
Alloy Steels

Alternative Approach for Qualification of Temperbead Welding in the Nuclear Industry

2012 ◽  
Author(s):  
Steven L. McCracken ◽  
Richard E. Smith
Keyword(s):  
Heat Treatment ◽  
Fracture Toughness ◽  
Alloy Steel ◽  
Nuclear Power ◽  
Post Weld Heat Treatment ◽  
Nuclear Power Industry ◽  
Low Alloy Steels ◽  
Low Alloy Steel ◽  
Alloy Steels ◽  
Weld Heat

Temperbead welding is common practice in the nuclear power industry for in-situ repair of quenched and tempered low alloy steels where post weld heat treatment is impractical. The temperbead process controls the heat input such that the weld heat-affected-zone (HAZ) in the low alloy steel is tempered by the welding heat of subsequent layers. This tempering eliminates the need for post weld heat treatment (PWHT). Unfortunately, repair organizations in the nuclear power industry are experiencing difficulty when attempting to qualify temperbead welding procedures on new quenched and tempered low alloy steel base materials manufactured to modern melting and deoxidation practices. The current ASME Code methodology and protocol for verification of adequate fracture toughness in materials was developed in the early 1970s. This paper reviews typical temperbead qualification results for vintage heats of quenched and tempered low alloy steels and compares them to similar test results obtained with modern materials of the same specification exhibiting superior fracture toughness.

Wear resistance of low alloy steels

1969 ◽  
Vol 11 (6) ◽  
pp. 472-474
Author(s):  
M. A. Tylkin ◽  
G. A. Barman
Keyword(s):  
Wear Resistance ◽  
Low Alloy Steels ◽  
Alloy Steels
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