The microstructure analysis of powder-processed Ni-based superalloy

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The microstructure analysis of powder-processed Ni-based superalloy

Popis výsledku v původním jazyce

The aim of present work is to study the high temperature degradation of the powder-processed superalloy Ni-15Cr-18Co-4Al-3.5Ti-5Mo. This superalloy has been applied as material for grips of a creep machine. The material was exposed at 1100 °C for about 10 days at 10 MPa stress. During the creep test occurred unacceptable creep deformation of grips as well as severe surface oxidation with scales peeling off. Three types of the microstructure were observed in the studied alloy. It is shown that the microstructure degradation resulting from the revealed ?´ phase fcc Ni3(Al,Ti) particles preferentially created at the grain boundaries of the samples after performing creep tests affects mechanical properties of the alloy. Based on our investigation the material is not recommended to be used for grips of creep machine at above 1000 °C.

Název v anglickém jazyce

The microstructure analysis of powder-processed Ni-based superalloy

Popis výsledku anglicky

The aim of present work is to study the high temperature degradation of the powder-processed superalloy Ni-15Cr-18Co-4Al-3.5Ti-5Mo. This superalloy has been applied as material for grips of a creep machine. The material was exposed at 1100 °C for about 10 days at 10 MPa stress. During the creep test occurred unacceptable creep deformation of grips as well as severe surface oxidation with scales peeling off. Three types of the microstructure were observed in the studied alloy. It is shown that the microstructure degradation resulting from the revealed ?´ phase fcc Ni3(Al,Ti) particles preferentially created at the grain boundaries of the samples after performing creep tests affects mechanical properties of the alloy. Based on our investigation the material is not recommended to be used for grips of creep machine at above 1000 °C.

Druh

C - Kapitola v odborné knize

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Deterioration, Dependability, Diagnostics

ISBN

978-80-7231-431-7

Počet stran výsledku

10

Strana od-do

35-44

Počet stran knihy

302

Název nakladatele

University of Defence

Místo vydání

Brno

Kód UT WoS kapitoly

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