Quenched-in vacancies and hardening of Fe-Al intermetallics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F20%3A00541075" target="_blank" >RIV/61389021:_____/20:00541075 - isvavai.cz</a>

Výsledek na webu

<a href="http://przyrbwn.icm.edu.pl/APP/PDF/137/app137z2p41.pdf" target="_blank" >http://przyrbwn.icm.edu.pl/APP/PDF/137/app137z2p41.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.12693/APhysPolA.137.255" target="_blank" >10.12693/APhysPolA.137.255</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quenched-in vacancies and hardening of Fe-Al intermetallics

Popis výsledku v původním jazyce

The role of vacancies in hardening of Fe-Al intermetallic alloys were studied in the present work for a wide range of Al concentrations from 20 to 50 at%. The alloys quenched from 1000 °C as well as those annealed subsequently at 520 °C for 1 h were subject to study. Slow-positron beam experiments combined with Vicker's microhardness tests were utilised. Hardness of Fe-Al alloys exhibited a somewhat complex dependence on Al content which could not be fully explained purely by consideration of intermetallic phases formed. This happens due to additional hardening effect caused by quenched-in vacancies. The concentrations of vacancies were estimated from positron back-diffusion data and found to rise for Al content above 25 at%. Correlation of vacancy concentrations with hardness data for the quenched and annealed alloys has revealed that hardening of alloys with a low Al content (< 30 at%) is originated predominantly by anti-phase boundaries while hardening induced by quenched-in vacancies dominates for alloys with a higher Al content (30-50 at%).

Název v anglickém jazyce

Quenched-in vacancies and hardening of Fe-Al intermetallics

Popis výsledku anglicky

The role of vacancies in hardening of Fe-Al intermetallic alloys were studied in the present work for a wide range of Al concentrations from 20 to 50 at%. The alloys quenched from 1000 °C as well as those annealed subsequently at 520 °C for 1 h were subject to study. Slow-positron beam experiments combined with Vicker's microhardness tests were utilised. Hardness of Fe-Al alloys exhibited a somewhat complex dependence on Al content which could not be fully explained purely by consideration of intermetallic phases formed. This happens due to additional hardening effect caused by quenched-in vacancies. The concentrations of vacancies were estimated from positron back-diffusion data and found to rise for Al content above 25 at%. Correlation of vacancy concentrations with hardness data for the quenched and annealed alloys has revealed that hardening of alloys with a low Al content (< 30 at%) is originated predominantly by anti-phase boundaries while hardening induced by quenched-in vacancies dominates for alloys with a higher Al content (30-50 at%).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Acta Physica Polonica A

ISSN

1898-794X

e-ISSN

—

Svazek periodika

137

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

5

Strana od-do

255-259

Kód UT WoS článku

000529332100042

EID výsledku v databázi Scopus

2-s2.0-85083816844