Features of fracture surface in a fully lamellar TiAl-base alloy

Rengen Ding; Hangyue Li; David Hu; Paul Bowen; Nigel Martin; Mark Dixon

doi:10.1016/j.intermet.2014.10.020

Features of fracture surface in a fully lamellar TiAl-base alloy

Rengen Ding, Hangyue Li, David Hu, Paul Bowen, Nigel Martin, Mark Dixon

Metallurgy and Materials

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

The deformation mechanisms associated with different fracture surface appearances of a fatigue tested lamellar TiAl-based alloy have been studied in detail by focussed ion beam and transmission electron microscopy. The results show that linear markings within translamellar plates correspond to twins and/or slip bands. The markings in interlamellar region are associated with the crack propagation from a lamellar boundary to another. The fan-like region with linear markings belongs to a gamma grain and the markings are related to twins. Intralamellar crack propagation is associated with twinetwin interaction within a gamma lamella.

Original language	English
Pages (from-to)	36-42
Number of pages	7
Journal	Intermetallics
Volume	58
Early online date	26 Nov 2014
DOIs	https://doi.org/10.1016/j.intermet.2014.10.020
Publication status	Published - Mar 2015

Keywords

Titanium aluminides, based on TiAl,
Microstructure,
Ion-beam methods
Electron microscopy
transmission
scanning

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10.1016/j.intermet.2014.10.020

Structural Metallic Systems For Advanced Gas Turbine Applications
Bowen, P. (Principal Investigator), Chiu, Y.-L. (Co-Investigator) & Reed, R. (Co-Investigator)
Engineering & Physical Science Research Council
1/10/09 → 30/09/14
Project: Research Councils

Cite this

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title = "Features of fracture surface in a fully lamellar TiAl-base alloy",

abstract = "The deformation mechanisms associated with different fracture surface appearances of a fatigue tested lamellar TiAl-based alloy have been studied in detail by focussed ion beam and transmission electron microscopy. The results show that linear markings within translamellar plates correspond to twins and/or slip bands. The markings in interlamellar region are associated with the crack propagation from a lamellar boundary to another. The fan-like region with linear markings belongs to a gamma grain and the markings are related to twins. Intralamellar crack propagation is associated with twinetwin interaction within a gamma lamella.",

keywords = "Titanium aluminides, based on TiAl,, Microstructure,, Ion-beam methods, Electron microscopy, transmission, scanning",

author = "Rengen Ding and Hangyue Li and David Hu and Paul Bowen and Nigel Martin and Mark Dixon",

year = "2015",

month = mar,

doi = "10.1016/j.intermet.2014.10.020",

language = "English",

volume = "58",

pages = "36--42",

journal = "Intermetallics",

issn = "0966-9795",

publisher = "Elsevier",

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T1 - Features of fracture surface in a fully lamellar TiAl-base alloy

AU - Ding, Rengen

AU - Li, Hangyue

AU - Hu, David

AU - Bowen, Paul

AU - Martin, Nigel

AU - Dixon, Mark

PY - 2015/3

Y1 - 2015/3

N2 - The deformation mechanisms associated with different fracture surface appearances of a fatigue tested lamellar TiAl-based alloy have been studied in detail by focussed ion beam and transmission electron microscopy. The results show that linear markings within translamellar plates correspond to twins and/or slip bands. The markings in interlamellar region are associated with the crack propagation from a lamellar boundary to another. The fan-like region with linear markings belongs to a gamma grain and the markings are related to twins. Intralamellar crack propagation is associated with twinetwin interaction within a gamma lamella.

AB - The deformation mechanisms associated with different fracture surface appearances of a fatigue tested lamellar TiAl-based alloy have been studied in detail by focussed ion beam and transmission electron microscopy. The results show that linear markings within translamellar plates correspond to twins and/or slip bands. The markings in interlamellar region are associated with the crack propagation from a lamellar boundary to another. The fan-like region with linear markings belongs to a gamma grain and the markings are related to twins. Intralamellar crack propagation is associated with twinetwin interaction within a gamma lamella.

KW - Titanium aluminides, based on TiAl,

KW - Microstructure,

KW - Ion-beam methods

KW - Electron microscopy

KW - transmission

KW - scanning

U2 - 10.1016/j.intermet.2014.10.020

DO - 10.1016/j.intermet.2014.10.020

M3 - Article

SN - 0966-9795

VL - 58

SP - 36

EP - 42

JO - Intermetallics

JF - Intermetallics

ER -

Features of fracture surface in a fully lamellar TiAl-base alloy

Abstract

Keywords

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Projects

Structural Metallic Systems For Advanced Gas Turbine Applications

Cite this