Influence of Ce on the microstructure and properties of Al-Li alloy

Yong Xin Wang; Lei Xu

doi:10.4028/www.scientific.net/msf.217-222.1323

Influence of Ce on the microstructure and properties of Al-Li alloy

Yong Xin Wang, Lei Xu

Queen Mary University of London Engineering School

Northwestern Polytechnical University Xian

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

1 Scopus citations

Abstract

Curves of ΔK_th vs. Δa_th and ΔK_Cl·th vs. Δa_rh for aluminum-lithium alloy 2090 have been determined and compared with those for traditional aluminum alloy 2024. The growth resistance of short fatigue cracks for aluminum-lithium alloy 2090 is quantitatively evaluated. The essential reason resulting in stronger short cracks effect has been ascertained. Influence of cerium on the growth behavior of short fatigue cracks for aluminum-lithium alloy 2090 was investigated. The results show that by adding cerium into this alloy a significant improvement in ΔK_i can be achieved and at the same time ΔK_Cl·th is increased. Consequently, the essential factor resulting in lower growth resistance of short fatigue cracks for this alloy is removed and the growth resistance of long and short fatigue cracks is increased.

Original language	English
Pages (from-to)	1323-1328
Number of pages	6
Journal	Materials Science Forum
Volume	217-222
Issue number	PART 2
DOIs	https://doi.org/10.4028/www.scientific.net/msf.217-222.1323
State	Published - 1996

Keywords

Aluminum-lithium alloy
Cerium
Short fatigue crack
Threshold

Access to Document

10.4028/www.scientific.net/msf.217-222.1323

Cite this

@article{d4cd4eb1a6454e3bb2e97b69a5a69098,

title = "Influence of Ce on the microstructure and properties of Al-Li alloy",

abstract = "Curves of ΔKth vs. Δath and ΔKCl·th vs. Δarh for aluminum-lithium alloy 2090 have been determined and compared with those for traditional aluminum alloy 2024. The growth resistance of short fatigue cracks for aluminum-lithium alloy 2090 is quantitatively evaluated. The essential reason resulting in stronger short cracks effect has been ascertained. Influence of cerium on the growth behavior of short fatigue cracks for aluminum-lithium alloy 2090 was investigated. The results show that by adding cerium into this alloy a significant improvement in ΔKi can be achieved and at the same time ΔKCl·th is increased. Consequently, the essential factor resulting in lower growth resistance of short fatigue cracks for this alloy is removed and the growth resistance of long and short fatigue cracks is increased.",

keywords = "Aluminum-lithium alloy, Cerium, Short fatigue crack, Threshold",

author = "Wang, {Yong Xin} and Lei Xu",

year = "1996",

doi = "10.4028/www.scientific.net/msf.217-222.1323",

language = "英语",

volume = "217-222",

pages = "1323--1328",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications Ltd",

number = "PART 2",

}

TY - JOUR

T1 - Influence of Ce on the microstructure and properties of Al-Li alloy

AU - Wang, Yong Xin

AU - Xu, Lei

PY - 1996

Y1 - 1996

N2 - Curves of ΔKth vs. Δath and ΔKCl·th vs. Δarh for aluminum-lithium alloy 2090 have been determined and compared with those for traditional aluminum alloy 2024. The growth resistance of short fatigue cracks for aluminum-lithium alloy 2090 is quantitatively evaluated. The essential reason resulting in stronger short cracks effect has been ascertained. Influence of cerium on the growth behavior of short fatigue cracks for aluminum-lithium alloy 2090 was investigated. The results show that by adding cerium into this alloy a significant improvement in ΔKi can be achieved and at the same time ΔKCl·th is increased. Consequently, the essential factor resulting in lower growth resistance of short fatigue cracks for this alloy is removed and the growth resistance of long and short fatigue cracks is increased.

AB - Curves of ΔKth vs. Δath and ΔKCl·th vs. Δarh for aluminum-lithium alloy 2090 have been determined and compared with those for traditional aluminum alloy 2024. The growth resistance of short fatigue cracks for aluminum-lithium alloy 2090 is quantitatively evaluated. The essential reason resulting in stronger short cracks effect has been ascertained. Influence of cerium on the growth behavior of short fatigue cracks for aluminum-lithium alloy 2090 was investigated. The results show that by adding cerium into this alloy a significant improvement in ΔKi can be achieved and at the same time ΔKCl·th is increased. Consequently, the essential factor resulting in lower growth resistance of short fatigue cracks for this alloy is removed and the growth resistance of long and short fatigue cracks is increased.

KW - Aluminum-lithium alloy

KW - Cerium

KW - Short fatigue crack

KW - Threshold

UR - http://www.scopus.com/inward/record.url?scp=5244270678&partnerID=8YFLogxK

U2 - 10.4028/www.scientific.net/msf.217-222.1323

DO - 10.4028/www.scientific.net/msf.217-222.1323

M3 - 文章

AN - SCOPUS:5244270678

SN - 0255-5476

VL - 217-222

SP - 1323

EP - 1328

JO - Materials Science Forum

JF - Materials Science Forum

IS - PART 2

ER -

Influence of Ce on the microstructure and properties of Al-Li alloy

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this