Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F14%3A00397330" target="_blank" >RIV/68081723:_____/14:00397330 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.586.222" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.586.222</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.586.222" target="_blank" >10.4028/www.scientific.net/KEM.586.222</a>
Alternative languages
Result language
angličtina
Original language name
Effect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy
Original language description
The subject of the article is focused on the refining of the cast structure of gamma TiAl-2Nb alloy using cyclic heat treatment and on the analysis of the grain refining mechanism. Microstructure evolution after applied cycles of heat treatment was characterized using light, laser and electron microscopy and using microhardness tests. Application of five heat treatment cycles during which two phase transformations (eutectoid and alpha-recrystallization reactions) repeatedly took place resulted in refining of the cast columnar structure. The mean grain-lamellar colony size 512 micrometers was transformed to fully lamellar structure containing gamma and alpha2 phases having the mean grain size 229 micrometers. Lamellae thickness of gamma was not changedwhile the thickness of alpha2 phase decreased to 78 nm. Refining of alpha2 phase resulted in the increase of the microhardness by 20 %. The recrystallized cast structure obtained by cyclic heat treatment and the knowledge on the mechanism
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JL - Fatigue and fracture mechanics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GAP107%2F11%2F0704" target="_blank" >GAP107/11/0704: Optimization of structure and properties of advanced high-temperature cast materials alloyed with carbon by complex heat treatment</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Local Mechanical Properties IX
ISBN
978-3-03785-876-9
ISSN
1013-9826
e-ISSN
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Number of pages
4
Pages from-to
222-225
Publisher name
Trans Tech Publications
Place of publication
Zurich
Event location
Levoča
Event date
Nov 7, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000336633500054