Počet záznamů: 1
Effect of heat treatment at (β+γ) two phase region on fracture toughness in tiAl intermetallic compound
- 1.
SYSNO ASEP 0509804 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Effect of heat treatment at (β+γ) two phase region on fracture toughness in tiAl intermetallic compound Tvůrce(i) Hasegawa, M. (JP)
Tomohiro, I. (JP)
Dlouhý, Ivo (UFM-A) RID, ORCIDCelkový počet autorů 3 Zdroj.dok. New Methods of Damage and Failure Analysis of Structural Parts. - Zurich : Trans Tech Publication, 2019 / Strnadel B. - ISSN 1013-9826 - ISBN 978-3-0357-1447-0 Rozsah stran s. 21-26 Poč.str. 6 s. Forma vydání Tištěná - P Akce New Methods of Damage and Failure Analysis of Structural Parts Datum konání 10.09.2018 - 14.09.2018 Místo konání Ostrava Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova TiAl intermetallic compound ; β phase precipitation ; fully lamellar ; fracture toughness Vědní obor RIV JG - Hutnictví, kovové materiály Obor OECD Materials engineering Institucionální podpora UFM-A - RVO:68081723 EID SCOPUS 85071150090 DOI 10.4028/www.scientific.net/KEM.810.21 Anotace Effects of holding temperature and time at (β+γ) two phase region on the microstructure of
fully lamellar Ti-46Al-7Nb-0.7Cr-0.2Ni-0.1Si (mol%) intermetallic compounds are studies. Fully
lamellar microstructure is observed after homogenization heat treatment for 3.6 ks at 1643 K (α
single phase state). Fine β phased grains precipitate at fully lamellar structure after heat treatment of
homogenized material at 1373 K. Holding the homogenized material for 72 ks at 1373 K decompose
partially the lamellar structure. Heat treatment of homogenized material at 1273 K also precipitates
the fine β phased grains in fully lamellar structure. In this temperature range, decomposition of
lamellar structure is not observed up to 72 ks heat treatment. The toughness of homogenized material
is ~ 15 MPa√m. Heat treatment of homogenized material at 1373 K and 1273 K for 3.6 ks indicates
maximum fracture toughness in each temperature range. This may due to the precipitation of fine β
phased grains. The fracture toughness decreases with the increase in heat treatment time up to 18 ks
and/or 36 ks. Then, the value of fracture toughness became constant. Specimens heat treated at 1373
K for 36 ks and 72 ks indicate lower toughness than homogenized material. However, when the
specimens are heat treated at 1273 K for 36 ks and 72 ks, the toughness is higher than that of
homogenized material. This change is due to the decomposition of the lamellar structure.Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2024 Elektronická adresa https://www.scientific.net/KEM.810.21
Počet záznamů: 1