Investigation of gamma prime precipitate morphology development in creep exposed nickel base superalloy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F12%3A%230000369" target="_blank" >RIV/26316919:_____/12:#0000369 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.metal2012.com/files/proceedings/02/reports/370.pdf" target="_blank" >http://www.metal2012.com/files/proceedings/02/reports/370.pdf</a>

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of gamma prime precipitate morphology development in creep exposed nickel base superalloy

Popis výsledku v původním jazyce

Nickel base superalloys are widely used for heavy duty gas turbine buckets, where stability of microstructure is an important factor The creep degraded nickel base single crystal superalloy CMSX-4 of two axial orientations [001] and [111] was investigated with aim to assess the structure degradation. Constant load creep tests were conducted in the stress/temperature ranges of 250 ? 780 MPa / 750 ? 950°C resulting in rupture time variation from 50 to 4000 hours. A combination of scanning electron microscopy (SEM) and non-destructive small-angle neutron scattering method (SANS) was used to investigate the directional coarsening (rafting) of the gamma prime (?') precipitates in relation to the stress and temperature applied as well as to the initial crystallographic orientation of the specimens. The SANS results are discussed in terms of the correlation with the raft development, the axial orientation of specimen, the creep parameters and the mechanical properties.

Název v anglickém jazyce

Investigation of gamma prime precipitate morphology development in creep exposed nickel base superalloy

Popis výsledku anglicky

Nickel base superalloys are widely used for heavy duty gas turbine buckets, where stability of microstructure is an important factor The creep degraded nickel base single crystal superalloy CMSX-4 of two axial orientations [001] and [111] was investigated with aim to assess the structure degradation. Constant load creep tests were conducted in the stress/temperature ranges of 250 ? 780 MPa / 750 ? 950°C resulting in rupture time variation from 50 to 4000 hours. A combination of scanning electron microscopy (SEM) and non-destructive small-angle neutron scattering method (SANS) was used to investigate the directional coarsening (rafting) of the gamma prime (?') precipitates in relation to the stress and temperature applied as well as to the initial crystallographic orientation of the specimens. The SANS results are discussed in terms of the correlation with the raft development, the axial orientation of specimen, the creep parameters and the mechanical properties.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

—

Projekt

<a href="/cs/project/FR-TI1%2F415" target="_blank" >FR-TI1/415: *Výzkum a vývoj nanostrukturních materiálů pro medicínské účely</a><br>

Návaznosti

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

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

METAL 2012

ISBN

978-80-87294-31-4

ISSN

—

e-ISSN

—

Počet stran výsledku

7

Strana od-do

1264-1270

Název nakladatele

TANGER Ltd.

Místo vydání

Ostrava, CZ

Místo konání akce

Brno,CZ

Datum konání akce

23. 5. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—