The effect of severe plastic deformation on the mechanical properties and structure of brass

Kód výsledku v IS VaVaI

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Nalezeny alternativní kódy

RIV/61989100:27360/18:10239645

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The effect of severe plastic deformation on the mechanical properties and structure of brass

Popis výsledku v původním jazyce

Over the last few years, the great attention was paid to materials with grain size of diameter smaller than 1 µm. These materials were classified as Ultra-Fine Grained (UFG) materials with diameter of grains of the order of 100 to 1000 nm and nano-materials (NC) with mean diameters of grains smaller than 50 nm. This research concerned to the production of UFG materials, using Severe Plastic Deformation (SPD) process. One of the forming methods using the SPD process is the DRECE method. This method was used to achieve the UFG structure in brass strip sheet. The DRECE process is based on extrusion technology with zero removal of the sheet strip thickness with the ultimate aim of achieving a high degree of deformation in the formed material, resulting in a significant improvement of mechanical properties in the formed material. This method was used to achieve the UFG structure in brass strip sheet. The brass CuZn37 strip sheets were processed by severe plastic deformation by DRECE method. The mechanical properties and structure achieved in individual passes by the device at room temperature were analyzed. Deformation route &quot;C&quot; was applied, i. e. the sheets were rotated about 180o between subsequent forming passes. It was found that process SPD has a significant influence on the increase mechanical properties of forming materials. The highest mechanical properties including Rp0,2 of 314 MPa, Rm of 419 MPa and A80 =18 % were obtained after only three DRECE passes. The average grain size was below 40 µm. The obtained results are detailed analyzed in the final part of this paper.

Název v anglickém jazyce

The effect of severe plastic deformation on the mechanical properties and structure of brass

Popis výsledku anglicky

Over the last few years, the great attention was paid to materials with grain size of diameter smaller than 1 µm. These materials were classified as Ultra-Fine Grained (UFG) materials with diameter of grains of the order of 100 to 1000 nm and nano-materials (NC) with mean diameters of grains smaller than 50 nm. This research concerned to the production of UFG materials, using Severe Plastic Deformation (SPD) process. One of the forming methods using the SPD process is the DRECE method. This method was used to achieve the UFG structure in brass strip sheet. The DRECE process is based on extrusion technology with zero removal of the sheet strip thickness with the ultimate aim of achieving a high degree of deformation in the formed material, resulting in a significant improvement of mechanical properties in the formed material. This method was used to achieve the UFG structure in brass strip sheet. The brass CuZn37 strip sheets were processed by severe plastic deformation by DRECE method. The mechanical properties and structure achieved in individual passes by the device at room temperature were analyzed. Deformation route &quot;C&quot; was applied, i. e. the sheets were rotated about 180o between subsequent forming passes. It was found that process SPD has a significant influence on the increase mechanical properties of forming materials. The highest mechanical properties including Rp0,2 of 314 MPa, Rm of 419 MPa and A80 =18 % were obtained after only three DRECE passes. The average grain size was below 40 µm. The obtained results are detailed analyzed in the final part of this paper.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

METAL 2018 : conference proceedings : reviewed version : 27th International Conference on Metallurgy and Materials : May 23rd-25th 2018, Hotel Voronez I, Brno, Czech Republic, EU

ISBN

978-80-87294-84-0

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

7

Strana od-do

419-425

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

23. 5. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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