Publication detail

Crack resistance characterization in TiAl intermetallics with enhanced toughness

DLOUHÝ, I. STRATIL, L. FUKUTOMI, H. HASEGAWA, M.

Original Title

Crack resistance characterization in TiAl intermetallics with enhanced toughness

Type

journal article in Scopus

Language

English

Original Abstract

The paper is focused on the analysis of the role of lamellar microstructure in fracture performance of model TiAl intermetallic compound. Coarse lamellar colonies and, at the same time, fine lamellar morphology were prepared by compressive deformation at 1553 K (region of stable α phase in TiAl equilibrium diagram) followed by controlled cooling to 1473 K (region of α+γ phase) with delay on this temperature and then cooling down. The fracture toughness was evaluated by means of chevron notch technique. In addition, because of enhanced toughness, crack resistance curves were obtained by load - unload technique of pre-racked beams, namely in two directions of crack propagation relative to lamellar structure. Extensive development of shear ligament toughening mechanism was observed in fracture surfaces leading to quite good fracture toughness thanks to the heat treatment applied. © 2017 Trans Tech Publications, Switzerland.

Keywords

titanium aluminides, intermetallics, hot working

Authors

DLOUHÝ, I.; STRATIL, L.; FUKUTOMI, H.; HASEGAWA, M.

Released

4. 11. 2016

Publisher

Elsevier

ISBN

1013-9826

Periodical

Key Engineering Materials (print)

Year of study

741

Number

11

State

Swiss Confederation

Pages from

13

Pages to

18

Pages count

6

URL

https://www.scopus.com/record/display.uri?eid=2-s2.0-85026896008&origin=resultslist

BibTex

@article{BUT170691,
  author="Ivo {Dlouhý} and Luděk {Stratil} and Hiroshi {Fukutomi} and Makoto {Hasegawa}",
  title="Crack resistance characterization in TiAl intermetallics with enhanced toughness",
  journal="Key Engineering Materials (print)",
  year="2016",
  volume="741",
  number="11",
  pages="13--18",
  doi="10.4028/www.scientific.net/KEM.741.13",
  issn="1013-9826",
  url="https://www.scopus.com/record/display.uri?eid=2-s2.0-85026896008&origin=resultslist"
}