Thermocyclic annealing of welded tool blanks

Fedyukin, V. K.; Kuz'ko, É. R.; Zuev, O. V.; Zvereva, A. D.

doi:10.1007/bf00670291

Cited by 2 publications

(2 citation statements)

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“…This led to the emergence of combined technologies that use different principles of influence on metal in the process of forming semi-finished and finished products. These include chemical-thermal, thermo-mechanical and thermo-cycling treatments [6][7][8][9], as well as the combination of heat treatment and physical methods, such as laser irradiation, ultrasonic and electromagnetic field treatment [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Improving Strength of Structural Steels by Preheating in an Oxygen-Containing Medium

Afanasyev

Popova

Zhibinova

2019

MSF

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The results of the preliminary heat treatment effecting in a medium with a high oxygen content on the microstructure and mechanical properties of structural steels are presented. It is shown that the usage of preheating in the glass mass in the range of (Ac130°C) – Ac1for steels of grades 50 and 40H leads to the formation of a structure with dispersed granular pearlite and crushed excess ferrite precipitates. Such a structure, when heated for quenching, provides rapid formation of a homogeneous austenite and a delay in the growth of austenite grain, which provides the best combination of strength and plasticity after the final heat treatment. It is established that the tensile strength increases 1.2-1.3 times while maintaining the plasticity characteristics. The reliability of the obtained estimates of the mechanical property characteristics is confirmed by the results of a statistical analysis.

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Section: Introductionmentioning

confidence: 99%

Improving Strength of Structural Steels by Preheating in an Oxygen-Containing Medium

Afanasyev

Popova

Zhibinova

2019

MSF

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“…as well as a change in the gas content in the alloys including hydrogen. As a result, these processes can form an optimal structure and improve physical and mechanical properties of the material [1][2][3][4][5][6]. The number of thermal cycles, the ranges of temperature, holding at extreme temperatures, heating and cooling rates of parts and pieces as well as the parameters of the deformation process such as form, temperature, the deformation ratio in the cycle and its total value can be used as the process control parameters to obtain fundamentally different structures, and, therefore, different material properties, while applying such treatments.…”

Section: Introductionmentioning

confidence: 99%

Influence of Thermal Cyclic Deformation and Hardening Heat Treatment on the Structure and Properties of Steel 10

Прудников

Popova

Prudnikov

2015

AMM

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The results of the influence of preliminary thermal cyclic deformation and subsequent hardening heat treatment on the microstructure and mechanical properties of hot-rolled sheet steel 10 are presented. It is shown that the use of preliminary thermal cyclic deformation of the steel 10 stock material results in a fine-grained structure of a hot-rolled sheet (3 mm thick) produced by an industrial technology. Deformation occurred at a temperature above AC3 (1250 °C), with cooling to 200-300 °C during 10 cycles and the deformation ratio per cycle being 6-8 %. Such a treatment before sheet hot-rolling allows increasing the strength characteristics (tensile strength, yield strength) by almost 30 %. It has been established that the use of subsequent heat treatment (quenching, 900 °C, water and tempering 1 h, 600 °C) leads to a further increase in strength characteristics by 15-20% while maintaining a sufficient level of ductility of sheet steel.

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Thermocyclic annealing of welded tool blanks

Cited by 2 publications

References 0 publications

Improving Strength of Structural Steels by Preheating in an Oxygen-Containing Medium

Improving Strength of Structural Steels by Preheating in an Oxygen-Containing Medium

Influence of Thermal Cyclic Deformation and Hardening Heat Treatment on the Structure and Properties of Steel 10

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