Fe3Al Iron Aluminides Alloyed with High Concentrations of V and Cr: Their Structure and High Temperature Strength

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10388172" target="_blank" >RIV/00216208:11320/18:10388172 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1007/s11661-018-4916-5" target="_blank" >https://doi.org/10.1007/s11661-018-4916-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11661-018-4916-5" target="_blank" >10.1007/s11661-018-4916-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fe3Al Iron Aluminides Alloyed with High Concentrations of V and Cr: Their Structure and High Temperature Strength

Popis výsledku v původním jazyce

Eight iron aluminide alloys with different contents of V and Cr were prepared up to 25 at.pct of both elements. The effect of the V and Cr concentration on the microstructure and mechanical properties was investigated by several complementary techniques. This investigation revealed that the microstructure of all the investigated alloys was comparable regardless of their chemical composition. All the alloys were in a solid solution condition without any major chemical inhomogeneity. For all alloys, a comparable grain size and D0(3) crystallographic structure was observed. In situ X-ray diffraction measurement revealed that the crystallographic structure was stable up to 1073K (800 degrees C) regardless of the chemical composition. Mechanical testing showed that the compressive yield stress significantly increased with the increasing total sum of V plus Cr. Much higher values of yield stress were measured for symmetric concentrations of V and Cr when compared to non-symmetric ones. Eventually, it was shown that the formation of at least a rough system of the lattice positions occupation by four types of atoms in four sub-lattices derived from D0(3) is the most probable strengthening factor for alloys with symmetric concentrations of V and Cr.

Název v anglickém jazyce

Fe3Al Iron Aluminides Alloyed with High Concentrations of V and Cr: Their Structure and High Temperature Strength

Popis výsledku anglicky

Eight iron aluminide alloys with different contents of V and Cr were prepared up to 25 at.pct of both elements. The effect of the V and Cr concentration on the microstructure and mechanical properties was investigated by several complementary techniques. This investigation revealed that the microstructure of all the investigated alloys was comparable regardless of their chemical composition. All the alloys were in a solid solution condition without any major chemical inhomogeneity. For all alloys, a comparable grain size and D0(3) crystallographic structure was observed. In situ X-ray diffraction measurement revealed that the crystallographic structure was stable up to 1073K (800 degrees C) regardless of the chemical composition. Mechanical testing showed that the compressive yield stress significantly increased with the increasing total sum of V plus Cr. Much higher values of yield stress were measured for symmetric concentrations of V and Cr when compared to non-symmetric ones. Eventually, it was shown that the formation of at least a rough system of the lattice positions occupation by four types of atoms in four sub-lattices derived from D0(3) is the most probable strengthening factor for alloys with symmetric concentrations of V and Cr.

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/GA16-05608S" target="_blank" >GA16-05608S: Hledání perspektivních materiálů na pomezí mezi aluminidy železa a entropickými slitinami.</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

Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

ISSN

1073-5623

e-ISSN

—

Svazek periodika

49A

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

6046-6051

Kód UT WoS článku

000450297300019

EID výsledku v databázi Scopus

2-s2.0-85053617935