On the low cycle fatigue behaviour of an Al-Zn-Mg-Cu alloy processed via non-isothermal ageing

Guo, Guangyi; Xu, Guofu; Tang, Yuan; Zhao, Zhihao; Yi, Zhihao; Li, Haoran; Wang, Ruohan; Peng, Xiaoyan

doi:10.1016/j.jmst.2023.05.031

Journal of Materials Science & Technology

2024

DOI: 10.1016/j.jmst.2023.05.031

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On the low cycle fatigue behaviour of an Al-Zn-Mg-Cu alloy processed via non-isothermal ageing

Guangyi Guo

Guofu Xu

Yuan Tang

et al.

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2024

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Cited by 9 publications

References 55 publications

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Improved Tensile Strength and SCC Resistance via Nonisothermal Creep Aging under a High Stress Level

Yi,

Xu,

Tang

et al. 2024

Adv Eng Mater

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Compared with conventional isothermal creep aging, non‐isothermal creep aging does not involve a prolonged holding stage, but only has heating and cooling stages. During the non‐isothermal creep aging process, the precipitates nucleate and grow up in the early part of heating stage, resulting in fluctuations in creep rate and an increase in strength. The coarsening of precipitates in the later part of the heating stage, can lead to significantly increase of creep rate. Upon approaching the peak temperature, the dissolution of the precipitates occurs in conjunction with a partial coarsening of the remaining precipitates, causing a reduction in strength. However, the secondary precipitation during the cooling stage facilities a significant strength enhancement in a relatively shorter period. In contrast to the isothermal creep aging, the targeted non‐isothermal creep aging treatment gives an increase in ultimate strength while improves the stress corrosion cracking resistance. Moreover, the time required for non‐isothermal creep aging to obtain ultimate strength is only 13.9 % of that of the ICA treatment. A large amount of creep strain can be generated during the NICA process, which is equivalent to 630 % of that of creep age forming treatment.This article is protected by copyright. All rights reserved.

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Improved Tensile Strength and SCC Resistance via Nonisothermal Creep Aging under a High Stress Level

Yi,

Xu,

Tang

et al. 2024

Adv Eng Mater

Self Cite

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The novel heat treatments of aluminium alloy characterized by multistage and non-isothermal routes: A review

Feng,

Li,

Zhang

et al. 2023

J. Cent. South Univ.

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Dynamic precipitation and recrystallization behavior during hot deformation of Al-Zn-Mg-Cu alloy: Experiment and modeling

Cheng,

Zhang,

Chu

et al. 2024

International Journal of Plasticity

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On the low cycle fatigue behaviour of an Al-Zn-Mg-Cu alloy processed via non-isothermal ageing

Cited by 9 publications

References 55 publications

Improved Tensile Strength and SCC Resistance via Nonisothermal Creep Aging under a High Stress Level

Improved Tensile Strength and SCC Resistance via Nonisothermal Creep Aging under a High Stress Level

The novel heat treatments of aluminium alloy characterized by multistage and non-isothermal routes: A review

Dynamic precipitation and recrystallization behavior during hot deformation of Al-Zn-Mg-Cu alloy: Experiment and modeling

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