Effects of Chemical Composition on Microstructure Evolution in Semi-Solid Processing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F15%3A43927975" target="_blank" >RIV/49777513:23210/15:43927975 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effects of Chemical Composition on Microstructure Evolution in Semi-Solid Processing

Popis výsledku v původním jazyce

Mini-thixoforming is a new method of processing metals in their freezing range region. The small feedstock volume used in this method allows rapid heating and solidification to be achieved with high accuracy. Mini-thixoforming can be employed for materials with a very narrow freezing range which, until now, were impossible to thixoform using the conventional routes. This method thus promises opportunities for obtaining novel types of microstructures. The evolution of microstructure during thixoforming is governed by the processing conditions and by the chemical composition of the feedstock. The impact of some elements, such as vanadium, molybdenum, tungsten and cobalt on semi-solid processing has not been adequately clarified or described yet. Therefore, the present experiment aims to ascertain the effect of these elements on semi-solid processing. Four high-alloyed steels were chosen as experimental materials for semi-solid forming trials. After the appropriate semi-solid processing parameters were found, the required die cavity filling and the surface quality of demonstration products were achieved. The resulting microstructures were examined using metallographic techniques. The effects of individual elements on the final microstructure were evaluated.

Název v anglickém jazyce

Effects of Chemical Composition on Microstructure Evolution in Semi-Solid Processing

Popis výsledku anglicky

Mini-thixoforming is a new method of processing metals in their freezing range region. The small feedstock volume used in this method allows rapid heating and solidification to be achieved with high accuracy. Mini-thixoforming can be employed for materials with a very narrow freezing range which, until now, were impossible to thixoform using the conventional routes. This method thus promises opportunities for obtaining novel types of microstructures. The evolution of microstructure during thixoforming is governed by the processing conditions and by the chemical composition of the feedstock. The impact of some elements, such as vanadium, molybdenum, tungsten and cobalt on semi-solid processing has not been adequately clarified or described yet. Therefore, the present experiment aims to ascertain the effect of these elements on semi-solid processing. Four high-alloyed steels were chosen as experimental materials for semi-solid forming trials. After the appropriate semi-solid processing parameters were found, the required die cavity filling and the surface quality of demonstration products were achieved. The resulting microstructures were examined using metallographic techniques. The effects of individual elements on the final microstructure were evaluated.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/LO1502" target="_blank" >LO1502: Rozvoj Regionálního technologického institutu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

2015 INTERNATIONAL CONFERENCE ON MATERIALS AND ENGINEERING AND INDUSTRIAL APPLICATIONS (MEIA 2015)

ISBN

978-1-60595-285-7

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

98-103

Název nakladatele

DESTECH PUBLICATIONS, INC, 439 DUKE STREET, LANCASTER, PA 17602-4967 USA

Místo vydání

LANCASTER

Místo konání akce

Hong Kong, Čína

Datum konání akce

20. 9. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000380295400018