Enhanced fatigue properties of cast AZ80 Mg alloy processed by cyclic torsion and low-temperature annealing

Qinghuan Huo; Zhenyu Xiao; Xuyue Yang; Daisuke Ando; Yuji Sutou; Junichi Koike

doi:10.1016/j.msea.2017.04.061

Enhanced fatigue properties of cast AZ80 Mg alloy processed by cyclic torsion and low-temperature annealing

Qinghuan Huo, Zhenyu Xiao, Xuyue Yang, Daisuke Ando, Yuji Sutou, Junichi Koike

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

28 Citations (Scopus)

Abstract

In this work, cyclic torsion and low-temperature annealing was applied to a cast AZ80 Mg alloy. After processing, the grains were refined in the outer region of the twisted samples whereas coarse grains remained in the central region. Meanwhile, a large number of {10-12} twins were generated in the outer region but only a few twins were observed in the central region. Both the tensile and compressive yield stresses were increased by grain refinement. At the same stress amplitude in stress-controlled fatigue tests, the strain energy was decreased. The fatigue limit was increased from 70 to 120 MPa, an increase attributed to pre-twinning induced by cyclic torsion.

Original language	English
Pages (from-to)	52-59
Number of pages	8
Journal	Materials Science and Engineering A
Volume	696
DOIs	https://doi.org/10.1016/j.msea.2017.04.061
Publication status	Published - 2017 Jun 1

Keywords

Fatigue
Magnesium alloy
Torsion
Twinning

ASJC Scopus subject areas

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

Access to Document

10.1016/j.msea.2017.04.061

Cite this

@article{50b3ef35dc8e4a92807e090c1f207c54,

title = "Enhanced fatigue properties of cast AZ80 Mg alloy processed by cyclic torsion and low-temperature annealing",

abstract = "In this work, cyclic torsion and low-temperature annealing was applied to a cast AZ80 Mg alloy. After processing, the grains were refined in the outer region of the twisted samples whereas coarse grains remained in the central region. Meanwhile, a large number of {10-12} twins were generated in the outer region but only a few twins were observed in the central region. Both the tensile and compressive yield stresses were increased by grain refinement. At the same stress amplitude in stress-controlled fatigue tests, the strain energy was decreased. The fatigue limit was increased from 70 to 120 MPa, an increase attributed to pre-twinning induced by cyclic torsion.",

keywords = "Fatigue, Magnesium alloy, Torsion, Twinning",

author = "Qinghuan Huo and Zhenyu Xiao and Xuyue Yang and Daisuke Ando and Yuji Sutou and Junichi Koike",

note = "Funding Information: The authors gratefully acknowledge the financial supports from the National Natural Science Foundation of China (Grant No. 51474241), the National Construction High-Level University Government-Sponsored Graduate Student Program of China Scholarship Council (CSC No. 201406370148), and Key Research and Development Program of Hunan Province (Grant No. 2016WK2018). Also, the authors thank Prof. Fumio Narita (Tohoku University, Japan) for assistance with the fatigue machine. Publisher Copyright: {\textcopyright} 2017 Elsevier B.V. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.",

year = "2017",

month = jun,

day = "1",

doi = "10.1016/j.msea.2017.04.061",

language = "English",

volume = "696",

pages = "52--59",

journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

issn = "0921-5093",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Enhanced fatigue properties of cast AZ80 Mg alloy processed by cyclic torsion and low-temperature annealing

AU - Huo, Qinghuan

AU - Xiao, Zhenyu

AU - Yang, Xuyue

AU - Ando, Daisuke

AU - Sutou, Yuji

AU - Koike, Junichi

N1 - Funding Information: The authors gratefully acknowledge the financial supports from the National Natural Science Foundation of China (Grant No. 51474241), the National Construction High-Level University Government-Sponsored Graduate Student Program of China Scholarship Council (CSC No. 201406370148), and Key Research and Development Program of Hunan Province (Grant No. 2016WK2018). Also, the authors thank Prof. Fumio Narita (Tohoku University, Japan) for assistance with the fatigue machine. Publisher Copyright: © 2017 Elsevier B.V. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.

PY - 2017/6/1

Y1 - 2017/6/1

N2 - In this work, cyclic torsion and low-temperature annealing was applied to a cast AZ80 Mg alloy. After processing, the grains were refined in the outer region of the twisted samples whereas coarse grains remained in the central region. Meanwhile, a large number of {10-12} twins were generated in the outer region but only a few twins were observed in the central region. Both the tensile and compressive yield stresses were increased by grain refinement. At the same stress amplitude in stress-controlled fatigue tests, the strain energy was decreased. The fatigue limit was increased from 70 to 120 MPa, an increase attributed to pre-twinning induced by cyclic torsion.

AB - In this work, cyclic torsion and low-temperature annealing was applied to a cast AZ80 Mg alloy. After processing, the grains were refined in the outer region of the twisted samples whereas coarse grains remained in the central region. Meanwhile, a large number of {10-12} twins were generated in the outer region but only a few twins were observed in the central region. Both the tensile and compressive yield stresses were increased by grain refinement. At the same stress amplitude in stress-controlled fatigue tests, the strain energy was decreased. The fatigue limit was increased from 70 to 120 MPa, an increase attributed to pre-twinning induced by cyclic torsion.

KW - Fatigue

KW - Magnesium alloy

KW - Torsion

KW - Twinning

UR - http://www.scopus.com/inward/record.url?scp=85018493537&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85018493537&partnerID=8YFLogxK

U2 - 10.1016/j.msea.2017.04.061

DO - 10.1016/j.msea.2017.04.061

M3 - Article

AN - SCOPUS:85018493537

SN - 0921-5093

VL - 696

SP - 52

EP - 59

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

ER -

Enhanced fatigue properties of cast AZ80 Mg alloy processed by cyclic torsion and low-temperature annealing

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this