Tensile, creep and fracture testing of prospective Fe-Al-based alloys using miniature specimens

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F19%3A00506328" target="_blank" >RIV/68081723:_____/19:00506328 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0167844218305019?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0167844218305019?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.tafmec.2018.11.005" target="_blank" >10.1016/j.tafmec.2018.11.005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tensile, creep and fracture testing of prospective Fe-Al-based alloys using miniature specimens

Popis výsledku v původním jazyce

Mechanical properties of prospective Fe-Al- based alloys were investigated using miniature specimens. This enables testing of material from experimental heats that did not allow preparation of standard specimens. Small punch test and mini-tensile test were applied for estimation of the mechanical properties of Fe-22 Al and Fe-22Al-7Ti (at.%) at high temperatures. It is shown that the force applied in the small punch test can be successfully converted into the equivalent applied stress using the empirical formula suggested by the new European standard for small punch testing. The minimum deflection rate can be converted into the minimum creep strain rate as well. The improvement of the latter conversion based on the Monlanan-Grant relationship is proposed. The small punch testing enables evaluation of rupture properties including the creep rupture strength. This can effectively complement previous investigations of Fe-Al-Ti alloys performed predominantly in uniaxial compression. It is shown that a significant increase in creep resistance is achieved by addition of titanium and a two-phase microstructure analogical to that in γ'-strengthened nickel-based superalloys is observed.

Název v anglickém jazyce

Tensile, creep and fracture testing of prospective Fe-Al-based alloys using miniature specimens

Popis výsledku anglicky

Mechanical properties of prospective Fe-Al- based alloys were investigated using miniature specimens. This enables testing of material from experimental heats that did not allow preparation of standard specimens. Small punch test and mini-tensile test were applied for estimation of the mechanical properties of Fe-22 Al and Fe-22Al-7Ti (at.%) at high temperatures. It is shown that the force applied in the small punch test can be successfully converted into the equivalent applied stress using the empirical formula suggested by the new European standard for small punch testing. The minimum deflection rate can be converted into the minimum creep strain rate as well. The improvement of the latter conversion based on the Monlanan-Grant relationship is proposed. The small punch testing enables evaluation of rupture properties including the creep rupture strength. This can effectively complement previous investigations of Fe-Al-Ti alloys performed predominantly in uniaxial compression. It is shown that a significant increase in creep resistance is achieved by addition of titanium and a two-phase microstructure analogical to that in γ'-strengthened nickel-based superalloys is observed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Theoretical and Applied Fracture Mechanics

ISSN

0167-8442

e-ISSN

—

Svazek periodika

99

Číslo periodika v rámci svazku

FEB

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

18-26

Kód UT WoS článku

000456758900003

EID výsledku v databázi Scopus

2-s2.0-85056453397