Cyclic deformation of a modern TiAl alloy at high temperatures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00434491" target="_blank" >RIV/68081723:_____/14:00434491 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.891-892.1131" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/AMR.891-892.1131</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.891-892.1131" target="_blank" >10.4028/www.scientific.net/AMR.891-892.1131</a>

Result language

angličtina

Original language name

Cyclic deformation of a modern TiAl alloy at high temperatures

Original language description

Ternary TiAl alloy with 8 at.% Nb and lamellar microstructure is subjected to low cycle fatigue tests at temperatures ranging from room temperature to 800 °C. The aim of the study is to find limit conditions when the microstructure is still stable and tostudy mechanisms of microstructural degradation when this limit is exceeded. Up to 750 °C, no cyclic softening or hardening is observed and cyclic stress-strain curve follows the tensile curve. Cyclic softening is characteristic for 800 °C. The TEM observation did not reveal any substantial changes in the microstructure due to the cycling up to 700°C. The lamellar structure is altered by cyclic straining at 750 °C and, to a higher extent, at 800°C. In specimens cycled to fracture at 800 °C, the domainswithout lamellar structure cover about 10% of volume and are almost dislocation free. The destruction of lamellar microstructure is the reason for the marked cyclic softening at 800 °C.

Czech name

—

Czech description

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Type

D - Article in proceedings

CEP classification

JL - Fatigue and fracture mechanics

OECD FORD branch

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Project

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

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

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

Article name in the collection

11th International Fatigue Congress

ISBN

978-3-03835-008-8

ISSN

1022-6680

e-ISSN

—

Number of pages

6

Pages from-to

1131-1136

Publisher name

Trans Tech Publications

Place of publication

Zurich

Event location

Melbourne

Event date

Mar 2, 2014

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000337767700175