From Micro to Nano Scale Structure by Plastic Deformations

Kvačkaj, Tibor; Bidulská, Jana

doi:10.4028/www.scientific.net/msf.783-786.842

Cited by 8 publications

(11 citation statements)

References 17 publications

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“…Quenching and partitioning (Q&P) steel, TRIP-aided bainitic ferrite steel and medium-Mn steel are well known as the AHSS of third-generation. These steels are based on the high Mn content in combination with nanostructures as well as local partitioning phenomenon [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Austenite – Ferrite Transformation Temperatures of C Mn Al Hsla Steel

Prislupčák¹,

Kvačkaj

Bidulská

et al. 2021

Acta Metall Slovaca

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The article is aimed to investigate a shift of transformation temperatures of C-Mn-Al HSLA steel with different cooling rates. The transformation temperatures from austenite to ferrite have been determined by dilatometry using thermal-mechanical simulator Gleeble 1500D. To define the start and finishing temperatures of the austenite-ferrite transformation intersectional method was used. Effect of cooling rate on transformation temperature has been evaluated for 0.17, 1, 5, 10, 15, 20, 25°C.s-1. There was found out that rising the cooling rate results in moving transformation temperature range to lower temperatures. The transformation temperatures have been also compared with temperatures calculated using equations of several authors. Some of them have considered cooling rates only. Cooling rates have effect on final microstructure. The effect has been evaluated by measuring hardness (HV10) relating the cooling rates from 0.17 to 25°C.s-1. Increasing cooling rates resulted in increase of hardness. Moreover, Thermo-Calc software was used to determine the Ae3 and Ae1 equilibrium temperatures. Equilibrium transformation temperatures Ae3-Ae1 were higher than experimentally measured by dilatometric method using Gleeble 1500D.

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Section: Introductionmentioning

confidence: 99%

Austenite – Ferrite Transformation Temperatures of C Mn Al Hsla Steel

Prislupčák¹,

Kvačkaj

Bidulská

et al. 2021

Acta Metall Slovaca

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“…These materials are, after annealing, rolled with the second reduction to reduce by 40% in size. These sheets have a distinctive texture, and their grains have been deformed in the direction of rolling-this is why anisotropy is higher in the case of these sheets than it is in the case of the simply rolled sheets [8,[10][11][12]. Problems occurred when estimating properties of the thin packaging sheets because, in the case of such a low thickness, the impurities within the material caused localized deformation [13][14][15].…”

Section: Materials and Methods For Experimental Researchmentioning

confidence: 99%

Research into Plastic Deformation of Double Reduced Sheets

Spišák

Majerníková

Spišáková

et al. 2018

Metals

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This contribution focuses on examining properties of thin steel sheets, which have been used to produce packages. Thin steel sheets for producing packages have been created with a different method (considering their thickness) than other thin steel sheets, such as sheets for the automobile industry. Steel sheets thinner than circa 0.18 mm are produced with a simple rolling and followed by annealing. Annealing can be completed through a batch process or a continuous process. Steel sheets with a thickness less than 0.13 mm are produced using a second reduction. Taking into account the considerably different strength and plastic properties of the sheets produced with simple rolling and the sheets produced with a second reduction, two types of materials are evaluated and analyzed in this contribution. Examined materials have been produced with different methods: The first material was continuously annealed after being rolled; the second was deformed using a second reduction without any subsequent annealing. Both used materials possess different final properties. The research focused on evaluation of the strength and plastic properties of the packaging sheets during various stress-strain states (uniaxial tensile test and biaxial tensile test-bulge test). The analysis also focused on the factors that led to a lack of inhomogeneity in the plastic deformation, mainly during the uniaxial tensile test causing the localization of the plastic deformation.

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“…Different strengthening strategies can be chosen as a function of final product properties to be targeted. The standard methods used for strengthening steels are [1][2]:…”

Section: Introductionmentioning

confidence: 99%

Effect of Quenching and Tempering Process on a Medium C Steel With Low Chromium and Molybenum Addition for Forged Components

Napoli¹,

Fabrizi²,

Rufini³

et al. 2018

Acta Metall Slovaca

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In this paper the effect of quenching and tempering (Q&T) thermal treatment on mechanical properties of a C-Mn steel with 0.22% Cr for forged components is studied. Due to the lack od any micro-alloying elements (such as vanadium or niobium) such steel can just reach mechanical target allowed by its intrinsic hardenability. Aim of this work is to evaluate the mechanical properties dependence as a function of different quenching and tempering treatments. Results show that, after Q&T, steel can reach a yield strength of 330 MPa combined with a -20°C fracture appearance transition temperature (50% FATT) measured with a Charpy-V impact test making this steel suitable for low temperature application.

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From Micro to Nano Scale Structure by Plastic Deformations

Cited by 8 publications

References 17 publications

Austenite – Ferrite Transformation Temperatures of C Mn Al Hsla Steel

Austenite – Ferrite Transformation Temperatures of C Mn Al Hsla Steel

Research into Plastic Deformation of Double Reduced Sheets

Effect of Quenching and Tempering Process on a Medium C Steel With Low Chromium and Molybenum Addition for Forged Components

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