Research of Application Possibilities of Selected Mechanically Alloyed Metal Powders

Novotný, Jan; Lysoňková, Irena; Michna, Štefan; Náprstková, Nataša

doi:10.21062/ujep/x.2017/a/1213-2489/mt/17/5/811

Cited by 11 publications

(3 citation statements)

References 5 publications

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“…As silicon has a stronger effect in solution strenghtening and precipitation hindering than aluminium, a complete substitution would decrease the strength of the steel and therefore only partial substitution of silicon with aluminium was chosen. Microalloying with niobium was proved to postpone the pearlite transformation in this type of low alloyed steel which is also advantageous for increasing carbon content, remained in the matrix, and for supporting the austenite stabilization [12][13][14][15][16].…”

Section: Experimental Programmentioning

confidence: 99%

Effect of various heat and thermo-mechanical treatments on low alloyed CMnAlNb high strength steel

Kučerová¹,

Tichá²,

Stehlík³

2022

Manufacturing Technology

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Low carbon low alloyed high strength steel with the chemical composition suitably designed to support the stabilization of retained austenite was used in this work. The steel was processed by conventional annealing for a reference and several different heat and thermomechanical treatments were further proposed to test typical TRIP (transformation induced plasticity), DP (dual phase) steel and QP (quenching and partitioning) processing routes. All the processing methods used the same soaking temperature of 1050 °C. Processed samples were subjected to metallographic analysis, hardness measurement and tensile test to characterise resulting microstructures. While simple annealing reached tensile strength of 861 MPa with 25% of total elongation, the best combination of the highest tensile strength of 903 MPa and a total elongation of 32% was obtained after processing typical for TRIP steel. QP treatment resulted in the highest tensile strength of 1289 MPa with a total elongation of 19%.TRIP steel DP steel QP treatment high strength steel

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Section: Experimental Programmentioning

confidence: 99%

Effect of various heat and thermo-mechanical treatments on low alloyed CMnAlNb high strength steel

Kučerová¹,

Tichá²,

Stehlík³

2022

Manufacturing Technology

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“…Conventional machining applications in the past have been characterized by large material removal and subsequent finishing operations in turning operations. At present, finishing operations are increasingly replaced by high-precision operations, which achieve a high quality of the machined surface at small feeds and small depths of cut [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Streamlining the Production Technology of Bearing Components by Cold Rolling

Stančeková

Joch

Ťavodová

et al. 2020

METAL 2020 Conference Proeedings

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The paper is focused on the design of a new technology for the production of bearing components in operating conditions. The design is compared with current technology, the essence of which is the operation of multispindle automats, i. implementation of classic soft operations by turning. From the comparison of technologies, it is possible to see the advantages of the proposed solution in terms of material intensity, as well as the overall quality of production, in the production of large series of components of mechanical structures, such as bearings. Traditional component production technologies often use rods and a forging process (Hatebur), where the deformation is relatively high, the course of the fibers is regular and parallel to the axis of the ring. In order to achieve material and energy savings, it is possible to focus on technologies that provide lower costs but also higher production quality in terms of the higher durability of components. Thus, such a technology is cold forming technology by rolling. The paper deals with the monitoring of the characteristics of the bearing rings processed in this way, where the starting semi-finished product is a tube with a drilled center, which is axially rolled after treatment. In the end, the paper will evaluate cold rolling tests for specific types of inner bearing rings.

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“…They are widely used in various fields such as the food, cosmetics, pharmaceutical, chemical and petrochemical industries, the manufacture of endoprostheses, surgical instruments, household appliances and many others. [1][2][3][4][5] The variety of their use also requires good properties of technical processing. The most of high alloy chromium-nickel steels are weldable and formable, but their machinability is a problem.…”

Section: Introductionmentioning

confidence: 99%

Analysis of 1.4571 Chrome-Nickel Steel Properties after Cold Forming by Bending

Stančeková

Michalková

Sapieta

et al. 2019

MSF

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The paper deals with the problems of austenitic chrome-nickel steels and their behavior in plastic deformation processes. These steels cannot be hardened by thermal processes due to a stable austenitic structure, therefore the increase of strength is achieved only by cold forming. The deformation mechanisms of the slip or twinning are activated by the effect of the forming force in the steel. Mainly, there is formed deformation-induced martensite whose structure is different from the martensite created by the heat treatment. As the intensive hardening of austenitic chrome-nickel steels under the effect of plastic deformation is beneficial, it adversely affects the machining of these materials.

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Research of Application Possibilities of Selected Mechanically Alloyed Metal Powders

Cited by 11 publications

References 5 publications

Effect of various heat and thermo-mechanical treatments on low alloyed CMnAlNb high strength steel

Effect of various heat and thermo-mechanical treatments on low alloyed CMnAlNb high strength steel

Streamlining the Production Technology of Bearing Components by Cold Rolling

Analysis of 1.4571 Chrome-Nickel Steel Properties after Cold Forming by Bending

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