Low-cycle fatigue behavior of rolled WE43-T5 magnesium alloy

被引：43

作者：

Ghorbanpour, Saeede ^{[1
]}

McWilliams, Brandon A. ^{[2
]}

Knezevic, Marko ^{[1
]}

机构：

[1] Univ New Hampshire, Dept Mech Engn, Durham, NH 03824 USA

[2] US Army Res Lab, Weapons & Mat Res Directorate, Aberdeen, MD USA

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2019年 / 42卷 / 06期

关键词：

Coffin-Manson model; cylic loading; low-cycle fatigue; microstructures; rare earth magnesium alloys; CRYSTAL PLASTICITY MODEL; 3-DIMENSIONAL IN-SITU; RARE-EARTH TEXTURE; ND-ZR ALLOY; MG-Y; DEFORMATION-BEHAVIOR; POLYCRYSTAL PLASTICITY; MECHANICAL-PROPERTIES; PRECIPITATE PHASES; WROUGHT MAGNESIUM;

D O I：

10.1111/ffe.12992

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper describes the main results from an investigation into the strength and low-cycle fatigue (LCF) behavior of a rolled plate of WE43 Mg alloy in its T5 condition at room temperature. The alloy was found to exhibit small tension/compression yield asymmetry and small anisotropy being stronger in transverse direction (TD) than in rolling direction (RD) along with some anisotropy in strain hardening. The LCF tests were conducted under strain-controlled conditions with the strain amplitudes ranging from 0.6% to 1.4% without the mean strain component. While the stress amplitudes during the LCF were higher for tests along TD than RD, the LCF life was similar for both directions. As revealed by electron microscopy, the fractured surfaces under tension consisted mainly of microvoid coalescence with some transgranular facets, while those fractured in LCF showed a combination of intergranular fracture and transgranular facets with minor content of microvoid coalescence.

引用

页码：1357 / 1372

页数：16

共 90 条

[1] The effects of heat treatment on very high cycle fatigue behavior in hot-rolled WE43 magnesium
Adams, Jacob F.
Allison, John E.
Jones, J. Wayne
[J]. INTERNATIONAL JOURNAL OF FATIGUE, 2016, 93 : 372 - 386
[2] In situ neutron diffraction and polycrystal plasticity modeling of a Mg-Y-Nd-Zr alloy: Effects of precipitation on individual deformation mechanisms
Agnew, S. R.
Mulay, R. P.
Polesak, F. J., III
Calhoun, C. A.
Bhattacharyya, J. J.
Clausen, B.
[J]. ACTA MATERIALIA, 2013, 61 (10) : 3769 - 3780
[3] Wrought magnesium: A 21st century outlook
Agnew, SR
[J]. JOM, 2004, 56 (05) : 20 - 21
[4] Sheet texture modification in magnesium-based alloys by selective rare earth alloying
Al-Samman, T.
Li, X.
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (10-11): : 3809 - 3822
[5] [Anonymous], 2011, B95111 ASTM
[6] [Anonymous], 2012, E606/E606M-12
[7] Apps P. J., 2006, MAGNESIUM ALLOYS THE, P53
[8] Aragones J, 2005, SAE TECHNICAL PAPER
[9] Explicit modeling of double twinning in AZ31 using crystal plasticity finite elements for predicting the mechanical fields for twin variant selection and fracture analyses
Ardeljan, Milan
Knezevic, Marko
[J]. ACTA MATERIALIA, 2018, 157 : 339 - 354
[10] Effect of dislocation density-twin interactions on twin growth in AZ31 as revealed by explicit crystal plasticity finite element modeling
Ardeljan, Milan
Beyerlein, Irene J.
Knezevic, Marko
[J]. INTERNATIONAL JOURNAL OF PLASTICITY, 2017, 99 : 81 - 101

← 1 2 3 4 5 6 7 8 9 →