Effect of stress triaxiality on fracture behaviour of Al-Li system alloy

H. J. Kim; T. Kobayashi; M. Niinomi; T. Hagiwara; T. Sakamoto

doi:10.4028/www.scientific.net/msf.217-222.1499

Effect of stress triaxiality on fracture behaviour of Al-Li system alloy

H. J. Kim, T. Kobayashi, M. Niinomi, T. Hagiwara, T. Sakamoto

Materials Development Division

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

Abstract

The relationship between formation of laminated cracks and stress triaxiality was investigated on 2091 Al-Li system alloy. The number of laminated cracks increased with rising stress triaxiality and the dynamic fracture toughness value J_d increased at 77K and exhibits greater value at thickness, B, of 1mm. As the laminated cracks will lead to the stress relaxation at the main crack tip, the increase of fracture toughness by laminated cracking is believed to be due to the delamination toughening.

Original language	English
Pages (from-to)	1499-1504
Number of pages	6
Journal	Materials Science Forum
Volume	217-222
Issue number	PART 3
DOIs	https://doi.org/10.4028/www.scientific.net/msf.217-222.1499
Publication status	Published - 1996

Keywords

2091 Al-Li alloy
Delamination toughening
Dynamic fracture toughness
Laminated cracks
Stress triaxiality

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.4028/www.scientific.net/msf.217-222.1499

Cite this

@article{daf9c743f2d0407b94ff3f07cd832de9,

title = "Effect of stress triaxiality on fracture behaviour of Al-Li system alloy",

abstract = "The relationship between formation of laminated cracks and stress triaxiality was investigated on 2091 Al-Li system alloy. The number of laminated cracks increased with rising stress triaxiality and the dynamic fracture toughness value Jd increased at 77K and exhibits greater value at thickness, B, of 1mm. As the laminated cracks will lead to the stress relaxation at the main crack tip, the increase of fracture toughness by laminated cracking is believed to be due to the delamination toughening.",

keywords = "2091 Al-Li alloy, Delamination toughening, Dynamic fracture toughness, Laminated cracks, Stress triaxiality",

author = "Kim, {H. J.} and T. Kobayashi and M. Niinomi and T. Hagiwara and T. Sakamoto",

year = "1996",

doi = "10.4028/www.scientific.net/msf.217-222.1499",

language = "English",

volume = "217-222",

pages = "1499--1504",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications",

number = "PART 3",

}

TY - JOUR

T1 - Effect of stress triaxiality on fracture behaviour of Al-Li system alloy

AU - Kim, H. J.

AU - Kobayashi, T.

AU - Niinomi, M.

AU - Hagiwara, T.

AU - Sakamoto, T.

PY - 1996

Y1 - 1996

N2 - The relationship between formation of laminated cracks and stress triaxiality was investigated on 2091 Al-Li system alloy. The number of laminated cracks increased with rising stress triaxiality and the dynamic fracture toughness value Jd increased at 77K and exhibits greater value at thickness, B, of 1mm. As the laminated cracks will lead to the stress relaxation at the main crack tip, the increase of fracture toughness by laminated cracking is believed to be due to the delamination toughening.

AB - The relationship between formation of laminated cracks and stress triaxiality was investigated on 2091 Al-Li system alloy. The number of laminated cracks increased with rising stress triaxiality and the dynamic fracture toughness value Jd increased at 77K and exhibits greater value at thickness, B, of 1mm. As the laminated cracks will lead to the stress relaxation at the main crack tip, the increase of fracture toughness by laminated cracking is believed to be due to the delamination toughening.

KW - 2091 Al-Li alloy

KW - Delamination toughening

KW - Dynamic fracture toughness

KW - Laminated cracks

KW - Stress triaxiality

UR - http://www.scopus.com/inward/record.url?scp=0029750966&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029750966&partnerID=8YFLogxK

U2 - 10.4028/www.scientific.net/msf.217-222.1499

DO - 10.4028/www.scientific.net/msf.217-222.1499

M3 - Article

AN - SCOPUS:0029750966

SN - 0255-5476

VL - 217-222

SP - 1499

EP - 1504

JO - Materials Science Forum

JF - Materials Science Forum

IS - PART 3

ER -

Effect of stress triaxiality on fracture behaviour of Al-Li system alloy

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this