Improved Creep Resistance at 1000°C of a Medium Entropy Alloy by the In Situ Formation of Intergranular MC Carbides

A Cantor’s alloy with modified contents in manganese and chromium, elaborated by classical foundry, was enriched either in tantalum and carbon or in hafnium and carbon, to promote the formation of MC carbides to try improving the poor creep resistance of the original quinary alloy for possible use a...

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Bibliographic Details
Published in:Indonesian Journal of Innovation and Applied Sciences 2024-06, Vol.4 (2), p.141-149
Main Authors: Gay, Corentin, Chenikha, Nassima, Spaeter, Pauline, Etienne, Erwan, Vernière, Anne, Aranda, Lionel, Berthod, Patrice
Format: Article
Language:English
Subjects:
Chemical Sciences
creep resistance
Engineering Sciences
high temperature
Material chemistry
Mechanics
Mechanics of materials
medium entropy alloy
thermal analysis
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Summary:A Cantor’s alloy with modified contents in manganese and chromium, elaborated by classical foundry, was enriched either in tantalum and carbon or in hafnium and carbon, to promote the formation of MC carbides to try improving the poor creep resistance of the original quinary alloy for possible use at 1000°C. Similarly to what was observed in recent investigations, metallography allowed checking that interdendritic/intergranular MC carbides were obtained here too. The two monocarbides–containing alloys were first subjected to differential thermal analysis to specify notably their melting start temperatures, to validate the chosen temperature for the creep tests. Three-point flexural creep tests were then performed at 1000°C, which indisputably demonstrated the outstanding strengthening effect of these MC carbides for the modified Cantor’s alloy.
ISSN:2775-4162
2775-4162
DOI:10.47540/ijias.v4i2.971