[Kovove materialy - Metallic materials]
    Mon - October 22, 2018 - 09:47 No. of hits : 969172 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 47 (2009), Issue 2

Impression creep of MoSi2
DORCAKOVA, F., SPAKOVA, J., DUSZA, J.
vol. 47 (2009), no. 2, pp. 83 - 87

Abstract
The creep behaviour of a monolithic molybdenum disilicide has been investigated within a temperature range from 1100 °C to 1250 °C at applied stresses from 20 MPa to 100 MPa in air using the impression test method. The strain-time relationships have been recorded, and the creep exponents as well as the activation energies of creep have been calculated. The results are compared to the creep results of the same material tested in four-point bending mode. The stress exponent in impression was found to be approximately 1, and the apparent activation energy approximately 250 kJmol-1. In lower stress-temperature range the creep behaviour of MoSi2 in impression and bending mode is very similar, however at higher stress-temperature range the creep rate, stress exponent and activation energy are significantly lower in impression.

Key words
impression creep, molybdenum disilicide, stress exponent, activation energy

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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: 2018-10-22 07:06     
Full text pdf uploaded: 2018-10-19 12:34    
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