Creep Damage Mechanisms in Cast Cobalt Superalloys for Applications in Glass Industry

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F18%3A00496176" target="_blank" >RIV/68081723:_____/18:00496176 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.774.173" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.774.173</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.774.173" target="_blank" >10.4028/www.scientific.net/KEM.774.173</a>

Result language

angličtina

Original language name

Creep Damage Mechanisms in Cast Cobalt Superalloys for Applications in Glass Industry

Original language description

Two cast NbC and TaC- strengthened cobalt-base superalloys have been developed for a precision casting of spinner discs for glass wool industry. In the present study, the relationships between the type and morphology of carbides and the degradation processes in both types of cast cobalt-based superalloys subjected to high temperature creep have been examined. It was found that the nature of carbides within the alloy microstructure plays a critical role in determining the creep damage processes and microstructure stability of the alloy system under high temperature creep. The morphology of the carbides is a strong function of their chemical composition. The interface decohesion between the complex carbides and the matrix and cracking of the brittle carbides homogeneously distributed in the crept NbC - strengthened alloy lead to brittle intergranular and/or interdendritic fracture. By contrast, Ta - strengthened alloy exhibited very small extent of isolated creep damage and the final fracture is ductile transgranular mode.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2018

Confidentiality

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

Article name in the collection

Advances in Fracture and Damage Mechanics XVII

ISBN

978-3-0357-1350-3

ISSN

1013-9826

e-ISSN

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Number of pages

6

Pages from-to

173-178

Publisher name

Trans Tech Publications

Place of publication

Zürich

Event location

Seville

Event date

Sep 4, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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