Fracture Behaviour of TiAl Intermetalics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F09%3A00332791" target="_blank" >RIV/68081723:_____/09:00332791 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Fracture Behaviour of TiAl Intermetalics

Original language description

Tensile properties and fracture toughness have been evaluated for Ti-40Al-2Cr-2Nb-1B and Ti-46Al-0.7Cr-0.1Si-7Nb-0.2Ni alloys. Positive Nb effect on fracture resistance was found; fracture toughness of the high Nb alloy was increased at contemporary increase of tensile and flexural strength. Fracture surfaces were evaluated using scanning electron microscopy showing the key role of mechanical twinning in deformation of both alloys. As a governing mechanism of the crack initiation a microcrack nucleationat boundaries between deformation twins and -TiAl grains was confirmed. Extensive development of shear ligament toughening was observed supplying quite good fracture toughness values in high Nb alloy.

Czech name

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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

<a href="/en/project/GA106%2F07%2F0762" target="_blank" >GA106/07/0762: Structure, properties and metallurgy of near-gamma TiAl alloys</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2009

Confidentiality

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

Article name in the collection

Damage and Fracture Mechanics

ISBN

978-90-481-2668-2

ISSN

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e-ISSN

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Number of pages

10

Pages from-to

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Publisher name

Springer

Place of publication

New York

Event location

Algiers

Event date

Jun 1, 2008

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000269689100028