Mechanical and microstructural characterization of powder metallurgy CoCrNi medium entropy alloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F17%3A00488188" target="_blank" >RIV/61389021:_____/17:00488188 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/17:00488188 RIV/68407700:21340/17:00314489 RIV/00216305:26210/17:PU124018

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.msea.2017.06.086" target="_blank" >http://dx.doi.org/10.1016/j.msea.2017.06.086</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2017.06.086" target="_blank" >10.1016/j.msea.2017.06.086</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mechanical and microstructural characterization of powder metallurgy CoCrNi medium entropy alloy

Popis výsledku v původním jazyce

The present study is focused on synthesis and mechanical properties characterization of equiatomic CoCrNi medium entropy alloy (MEA). Powder metallurgy processes of mechanical alloying (MA) with subsequent spark plasma sintering (SPS) for bulk alloy densification have been utilized. As opposed to the single-phase alloys of identical composition fabricated via casting routes, the alloy after SPS compaction consisted of a major FCC solid solution phase (94.4%), minor fraction of secondary BCC phase (5.6%, precipitated at the FCC grains boundaries), and negligible amount of oxide inclusions. The alloy exhibited high ultimate tensile strength of 1024 MPa and a elongation to fracture of 26%. Elastic modulus of the alloy reached 222.GPa and the thermal expansion coefficient (CTE) was measured as 17.4 x 10(-6) K-1 The plastic deformation in the alloy is carried out by a combination of dislocation glide and mechanical nano-twinning at room temperature

Název v anglickém jazyce

Mechanical and microstructural characterization of powder metallurgy CoCrNi medium entropy alloy

Popis výsledku anglicky

The present study is focused on synthesis and mechanical properties characterization of equiatomic CoCrNi medium entropy alloy (MEA). Powder metallurgy processes of mechanical alloying (MA) with subsequent spark plasma sintering (SPS) for bulk alloy densification have been utilized. As opposed to the single-phase alloys of identical composition fabricated via casting routes, the alloy after SPS compaction consisted of a major FCC solid solution phase (94.4%), minor fraction of secondary BCC phase (5.6%, precipitated at the FCC grains boundaries), and negligible amount of oxide inclusions. The alloy exhibited high ultimate tensile strength of 1024 MPa and a elongation to fracture of 26%. Elastic modulus of the alloy reached 222.GPa and the thermal expansion coefficient (CTE) was measured as 17.4 x 10(-6) K-1 The plastic deformation in the alloy is carried out by a combination of dislocation glide and mechanical nano-twinning at room temperature

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LO1202" target="_blank" >LO1202: NETME CENTRE PLUS</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Materials Science and Engineering A-Structural materials

ISSN

0921-5093

e-ISSN

—

Svazek periodika

701

Číslo periodika v rámci svazku

July

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

370-380

Kód UT WoS článku

000406989000041

EID výsledku v databázi Scopus

2-s2.0-85021648941