EFFECT OF HEAT PRE-TREATMENT AND EXTRUSION ON THE STRUCTURE AND MECHANICAL PROPERTIES OF WZ21 MAGNESIUM ALLOY

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10390260" target="_blank" >RIV/00216208:11320/18:10390260 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/18:43916548

Výsledek na webu

<a href="https://doi.org/10.17222/mit.2017.214" target="_blank" >https://doi.org/10.17222/mit.2017.214</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.17222/mit.2017.214" target="_blank" >10.17222/mit.2017.214</a>

Jazyk výsledku

angličtina

Název v původním jazyce

EFFECT OF HEAT PRE-TREATMENT AND EXTRUSION ON THE STRUCTURE AND MECHANICAL PROPERTIES OF WZ21 MAGNESIUM ALLOY

Popis výsledku v původním jazyce

The magnesium alloy WZ21 was prepared by a combination of conventional casting, extrusion and heat treatment. The effect of various processing conditions on the final structure, mechanical and corrosion properties were investigated. Long-period stacking ordered (LPSO) phases were observed in the as-cast structure; however, they were at least partially dissolved during the extrusion or heat treatment. Thermally stable Mg-24 Y-5 was observed in the structure as another dominant phase. The application of heat treatment to extruded products causes significant grain growth, and, therefore, the loss of mechanical properties. On the contrary, heat treatment performed before extrusion has a strong positive effect on the observed mechanical properties. In both cases, the thermal treatment positively affected the corrosion resistance of the prepared materials although the effect is more significant for material annealed before extrusion. After appropriate processing, the W221 alloy was characterized by the high value of the tensile yield strength of 337 MPa and really promising corrosion rate in simulated body fluid (SBF) (0.75 mm/year).

Název v anglickém jazyce

EFFECT OF HEAT PRE-TREATMENT AND EXTRUSION ON THE STRUCTURE AND MECHANICAL PROPERTIES OF WZ21 MAGNESIUM ALLOY

Popis výsledku anglicky

The magnesium alloy WZ21 was prepared by a combination of conventional casting, extrusion and heat treatment. The effect of various processing conditions on the final structure, mechanical and corrosion properties were investigated. Long-period stacking ordered (LPSO) phases were observed in the as-cast structure; however, they were at least partially dissolved during the extrusion or heat treatment. Thermally stable Mg-24 Y-5 was observed in the structure as another dominant phase. The application of heat treatment to extruded products causes significant grain growth, and, therefore, the loss of mechanical properties. On the contrary, heat treatment performed before extrusion has a strong positive effect on the observed mechanical properties. In both cases, the thermal treatment positively affected the corrosion resistance of the prepared materials although the effect is more significant for material annealed before extrusion. After appropriate processing, the W221 alloy was characterized by the high value of the tensile yield strength of 337 MPa and really promising corrosion rate in simulated body fluid (SBF) (0.75 mm/year).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA16-08963S" target="_blank" >GA16-08963S: Perspektivní hořčíkové slitiny se zlepšenými korozními, biologickými a mechanickými vlastnostmi</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Materiali in Tehnologije

ISSN

1580-2949

e-ISSN

—

Svazek periodika

52

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

SI - Slovinská republika

Počet stran výsledku

7

Strana od-do

499-505

Kód UT WoS článku

000442176700019

EID výsledku v databázi Scopus

2-s2.0-85051814084