Precipitation behavior and precipitates characterization of Al-Zn-Mg-Cu alloy during the non-isothermal aging process

Zhongwei Chen; Congcong Ren; Wei Le; Bo An

doi:10.1016/j.vacuum.2024.113946

Precipitation behavior and precipitates characterization of Al-Zn-Mg-Cu alloy during the non-isothermal aging process

Zhongwei Chen, Congcong Ren, Wei Le, Bo An

Research output: Contribution to journal › Review article › peer-review

2 Scopus citations

Abstract

In this work, the precipitation behavior and precipitates characterization of Al-Zn-Mg-Cu alloy during non-isothermal aging (NIA) process were investigated by transmission electron microscopy (TEM) and microhardness testing. The existence state of the overall precipitates in the alloy has been studied, and the evolution sequence can be expressed as: SSS→ GP II zones→ GPII zones and η′ precipitates→ η precipitates→ η precipitates and GPII zones→ η precipitates. The results show that the η series precipitates can provide support for the hardening of Al-Zn-Mg-Cu alloy, especially the GPII zones and η′ precipitates. Besides, some interesting phenomena were observed and explained, and a new type of η precipitate (η₁₄) was characterized.

Original language	English
Article number	113946
Journal	Vacuum
Volume	233
DOIs	https://doi.org/10.1016/j.vacuum.2024.113946
State	Published - Mar 2025
Externally published	Yes

Keywords

Al-Zn-Mg-Cu alloy
Non-isothermal aging (NIA)
Transmission electron microscopy (TEM)
η.precipitates

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10.1016/j.vacuum.2024.113946

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title = "Precipitation behavior and precipitates characterization of Al-Zn-Mg-Cu alloy during the non-isothermal aging process",

abstract = "In this work, the precipitation behavior and precipitates characterization of Al-Zn-Mg-Cu alloy during non-isothermal aging (NIA) process were investigated by transmission electron microscopy (TEM) and microhardness testing. The existence state of the overall precipitates in the alloy has been studied, and the evolution sequence can be expressed as: SSS→ GP II zones→ GPII zones and η′ precipitates→ η precipitates→ η precipitates and GPII zones→ η precipitates. The results show that the η series precipitates can provide support for the hardening of Al-Zn-Mg-Cu alloy, especially the GPII zones and η′ precipitates. Besides, some interesting phenomena were observed and explained, and a new type of η precipitate (η14) was characterized.",

keywords = "Al-Zn-Mg-Cu alloy, Non-isothermal aging (NIA), Transmission electron microscopy (TEM), η.precipitates",

author = "Zhongwei Chen and Congcong Ren and Wei Le and Bo An",

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year = "2025",

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doi = "10.1016/j.vacuum.2024.113946",

language = "英语",

volume = "233",

journal = "Vacuum",

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TY - JOUR

T1 - Precipitation behavior and precipitates characterization of Al-Zn-Mg-Cu alloy during the non-isothermal aging process

AU - Chen, Zhongwei

AU - Ren, Congcong

AU - Le, Wei

AU - An, Bo

PY - 2025/3

Y1 - 2025/3

N2 - In this work, the precipitation behavior and precipitates characterization of Al-Zn-Mg-Cu alloy during non-isothermal aging (NIA) process were investigated by transmission electron microscopy (TEM) and microhardness testing. The existence state of the overall precipitates in the alloy has been studied, and the evolution sequence can be expressed as: SSS→ GP II zones→ GPII zones and η′ precipitates→ η precipitates→ η precipitates and GPII zones→ η precipitates. The results show that the η series precipitates can provide support for the hardening of Al-Zn-Mg-Cu alloy, especially the GPII zones and η′ precipitates. Besides, some interesting phenomena were observed and explained, and a new type of η precipitate (η14) was characterized.

AB - In this work, the precipitation behavior and precipitates characterization of Al-Zn-Mg-Cu alloy during non-isothermal aging (NIA) process were investigated by transmission electron microscopy (TEM) and microhardness testing. The existence state of the overall precipitates in the alloy has been studied, and the evolution sequence can be expressed as: SSS→ GP II zones→ GPII zones and η′ precipitates→ η precipitates→ η precipitates and GPII zones→ η precipitates. The results show that the η series precipitates can provide support for the hardening of Al-Zn-Mg-Cu alloy, especially the GPII zones and η′ precipitates. Besides, some interesting phenomena were observed and explained, and a new type of η precipitate (η14) was characterized.

KW - Al-Zn-Mg-Cu alloy

KW - Non-isothermal aging (NIA)

KW - Transmission electron microscopy (TEM)

KW - η.precipitates

UR - http://www.scopus.com/inward/record.url?scp=85212530825&partnerID=8YFLogxK

U2 - 10.1016/j.vacuum.2024.113946

DO - 10.1016/j.vacuum.2024.113946

M3 - 文献综述

AN - SCOPUS:85212530825

SN - 0042-207X

VL - 233

JO - Vacuum

JF - Vacuum

M1 - 113946

ER -

Precipitation behavior and precipitates characterization of Al-Zn-Mg-Cu alloy during the non-isothermal aging process

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