[Kovove materialy - Metallic materials]
    Wed - October 24, 2018 - 02:35 No. of hits : 969727 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 56 (2018), Issue 4

Small punch creep of Fe-Al-Cr alloy with Ce addition and its relation to uniaxial creep tests
DOBES, F., DYMÁČEK, P., FRIÁK, M.
vol. 56 (2018), no. 4, pp. 205 - 212

Abstract
Creep behaviour of the alloy based on intermetallic compound Fe3Al with additions of 2.6 at.% chromium and 0.02 at.% cerium was studied at temperatures from 500 to 800 °C by small punch testing with a constant force. The dependences of the minimum deflection rate and the time to rupture on the applied force follow similar dependences obtained in uniaxial creep tests of the same alloy. The results of small punch tests can be explained by the existence of different crystal lattices occurring at different 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 Monkman-Grant relationship is proposed.

Key words
iron aluminides, creep, small punch test, Monkman-Grant relation

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


Article abstracts updated: 2018-10-19 12:29      
Articles in press revised: 2018-10-23 06:26     
Full text pdf uploaded: 2018-10-19 12:34    
Information updated: 2018-08-18 11:39   
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