Ultrafine versus coarse grained Al 5083 alloys: From low-cycle to very-high-cycle fatigue

Li Meng; Anchal Goyal; Véronique Doquet; Nicolas Ranc; Jean Philippe Couzinié

doi:10.1016/j.ijfatigue.2018.12.004

Ultrafine versus coarse grained Al 5083 alloys: From low-cycle to very-high-cycle fatigue

Li Meng
, Anchal Goyal
, Véronique Doquet
, Nicolas Ranc
, Jean Philippe Couzinié

Department of Mechanics École Polytechnique
Shanghai Jiao Tong University
Arts et Métiers ParisTech
Institut de Chimie et des Matériaux de Paris Est, CNRS UPEC/UMR 7182

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

Abstract

The fatigue performance of coarse and ultrafine-grained (UFG) 5083 Al alloy were compared, from low to very high cycle fatigue. The UFG alloy exhibited cyclic hardening and predominant kinematic hardening. At high plastic strain amplitude (and only in this regime), it showed easier crack initiation and a lower fatigue resistance. Its resistance to HCF was hardly better than that of its coarse grained counterpart until 2.10⁶ cycles, but 43% higher in VHCF, until 5.10⁸ cycles. Beyond that point, internal crack initiation occurred, and the fatigue resistance of the UFG material decreased, which was explained using Fracture Mechanics.

Original language	English
Pages (from-to)	84-97
Number of pages	14
Journal	International Journal of Fatigue
Volume	121
DOIs	https://doi.org/10.1016/j.ijfatigue.2018.12.004
Publication status	Published - 1 Apr 2019
Externally published	Yes

Keywords

Al-Mg alloy
Cyclic plasticity
Fish-eye
Ultrafine grains
VHCF

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10.1016/j.ijfatigue.2018.12.004

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title = "Ultrafine versus coarse grained Al 5083 alloys: From low-cycle to very-high-cycle fatigue",

abstract = "The fatigue performance of coarse and ultrafine-grained (UFG) 5083 Al alloy were compared, from low to very high cycle fatigue. The UFG alloy exhibited cyclic hardening and predominant kinematic hardening. At high plastic strain amplitude (and only in this regime), it showed easier crack initiation and a lower fatigue resistance. Its resistance to HCF was hardly better than that of its coarse grained counterpart until 2.106 cycles, but 43\% higher in VHCF, until 5.108 cycles. Beyond that point, internal crack initiation occurred, and the fatigue resistance of the UFG material decreased, which was explained using Fracture Mechanics.",

keywords = "Al-Mg alloy, Cyclic plasticity, Fish-eye, Ultrafine grains, VHCF",

author = "Li Meng and Anchal Goyal and V{\'e}ronique Doquet and Nicolas Ranc and Couzini{\'e}, \{Jean Philippe\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

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doi = "10.1016/j.ijfatigue.2018.12.004",

language = "English",

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T1 - Ultrafine versus coarse grained Al 5083 alloys

T2 - From low-cycle to very-high-cycle fatigue

AU - Meng, Li

AU - Goyal, Anchal

AU - Doquet, Véronique

AU - Ranc, Nicolas

AU - Couzinié, Jean Philippe

PY - 2019/4/1

Y1 - 2019/4/1

N2 - The fatigue performance of coarse and ultrafine-grained (UFG) 5083 Al alloy were compared, from low to very high cycle fatigue. The UFG alloy exhibited cyclic hardening and predominant kinematic hardening. At high plastic strain amplitude (and only in this regime), it showed easier crack initiation and a lower fatigue resistance. Its resistance to HCF was hardly better than that of its coarse grained counterpart until 2.106 cycles, but 43% higher in VHCF, until 5.108 cycles. Beyond that point, internal crack initiation occurred, and the fatigue resistance of the UFG material decreased, which was explained using Fracture Mechanics.

AB - The fatigue performance of coarse and ultrafine-grained (UFG) 5083 Al alloy were compared, from low to very high cycle fatigue. The UFG alloy exhibited cyclic hardening and predominant kinematic hardening. At high plastic strain amplitude (and only in this regime), it showed easier crack initiation and a lower fatigue resistance. Its resistance to HCF was hardly better than that of its coarse grained counterpart until 2.106 cycles, but 43% higher in VHCF, until 5.108 cycles. Beyond that point, internal crack initiation occurred, and the fatigue resistance of the UFG material decreased, which was explained using Fracture Mechanics.

KW - Al-Mg alloy

KW - Cyclic plasticity

KW - Fish-eye

KW - Ultrafine grains

KW - VHCF

U2 - 10.1016/j.ijfatigue.2018.12.004

DO - 10.1016/j.ijfatigue.2018.12.004

M3 - Article

AN - SCOPUS:85058369292

SN - 0142-1123

VL - 121

SP - 84

EP - 97

JO - International Journal of Fatigue

JF - International Journal of Fatigue

ER -

Ultrafine versus coarse grained Al 5083 alloys: From low-cycle to very-high-cycle fatigue

Abstract

Keywords

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