The influence of ternary alloying element in iron aluminides on coefficient of thermal expansion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F16%3A00003083" target="_blank" >RIV/46747885:24210/16:00003083 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24620/16:00003083

Výsledek na webu

<a href="http://dx.doi.org/10.4149/km_2016_2_83" target="_blank" >http://dx.doi.org/10.4149/km_2016_2_83</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4149/km_2016_2_83" target="_blank" >10.4149/km_2016_2_83</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The influence of ternary alloying element in iron aluminides on coefficient of thermal expansion

Popis výsledku v původním jazyce

The iron aluminides appear as suitable materials with many advantages for use in high-temperature applications. However, a sharp drop in their strength above 600 °C and limited ductility at room temperature are the major obstacles to their mass expansion. There are several possibilities how to improve these negative properties. One possibility is alloying of binary alloys by another element.The main aim of present work is to evaluate the effect of different alloying elements on the coefficient of thermal expansion with respect to phase composition and structure. Generally, the high mechanical temperature properties are affected by alloy structure, and the same could be supposed for the coefficient of thermal expansion (CTE). In this paper, there were studied Fe-26Al-2X (X = Cr, Si, Ta, Zr) alloys. Structure and phase composition were evaluated by SEM, EDX, and EBSD. The CTE’s were examined in a temperature range 460–1200 °C using horizontal dilatometer. Precipitates of ternary phases can beneficially affect the CTE’s values. The lowest and most stable CTE was observed for iron aluminide with Ta-addition.

Název v anglickém jazyce

The influence of ternary alloying element in iron aluminides on coefficient of thermal expansion

Popis výsledku anglicky

The iron aluminides appear as suitable materials with many advantages for use in high-temperature applications. However, a sharp drop in their strength above 600 °C and limited ductility at room temperature are the major obstacles to their mass expansion. There are several possibilities how to improve these negative properties. One possibility is alloying of binary alloys by another element.The main aim of present work is to evaluate the effect of different alloying elements on the coefficient of thermal expansion with respect to phase composition and structure. Generally, the high mechanical temperature properties are affected by alloy structure, and the same could be supposed for the coefficient of thermal expansion (CTE). In this paper, there were studied Fe-26Al-2X (X = Cr, Si, Ta, Zr) alloys. Structure and phase composition were evaluated by SEM, EDX, and EBSD. The CTE’s were examined in a temperature range 460–1200 °C using horizontal dilatometer. Precipitates of ternary phases can beneficially affect the CTE’s values. The lowest and most stable CTE was observed for iron aluminide with Ta-addition.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

<a href="/cs/project/LO1201" target="_blank" >LO1201: ROZVOJ ÚSTAVU PRO NANOMATERIÁLY, POKROČILÉ TECHNOLOGIE A INOVACE TECHNICKÉ UNIVERZITY V LIBERCI</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Kovove Materialy

ISSN

0023-432X

e-ISSN

—

Svazek periodika

54

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

5

Strana od-do

83-89

Kód UT WoS článku

000376215800001

EID výsledku v databázi Scopus

2-s2.0-84964655196