Strengthening mechanism of hot forming with synchronous cooling of AA2024-H18 aluminum alloy

Guo Liang Chen; Ming He Chen; Ning Wang; Jia Wei Sun

doi:10.19476/j.ysxb.1004.0609.2017.07.03

Strengthening mechanism of hot forming with synchronous cooling of AA2024-H18 aluminum alloy

Guo Liang Chen
, Ming He Chen^*
, Ning Wang
, Jia Wei Sun

^*Corresponding author for this work

Nanjing University of Aeronautics and Astronautics
Changzhou Institute of Mechatronic Technology

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

1 Scopus citations

Abstract

Hot forming test with synchronous cooling, metallographic and TEM observation and tensile test were performed to investigate the influence of hot forming with synchronous cooling operations on the microstructure evolution and strengthening mechanism of AA2024-H18 aluminum alloy. The results show that, the yield strength of hot formed AA2024 sheet with 96 h natural aging is 4%, which is superior to that of traditionally formed sheet, and meanwhile, the tensile strength is increased by 12%. Based on the microstructure observation and analysis, the strengthening is generated by the increase of the dislocation density and precipitation of some fine acicular particles in form of Al₂CuMg (S'). The main strengthening mechanism of AA2024 aluminum alloy underwent hot forming with synchronous cooling is the pinning effect of dispersoid phase Al₂₀Cu₂Mn₃ (T) and precipitated phase Al₂CuMg (S') on dislocation as well as the interaction of dislocation.

Original language	English
Pages (from-to)	1337-1343
Number of pages	7
Journal	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
Volume	27
Issue number	7
DOIs	https://doi.org/10.19476/j.ysxb.1004.0609.2017.07.03
State	Published - 1 Jul 2017
Externally published	Yes

Keywords

AA2024 aluminum alloy
Hot forming with synchronous cooling
Mechanical behavior
Microstructure
Strengthening mechanism

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10.19476/j.ysxb.1004.0609.2017.07.03

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title = "Strengthening mechanism of hot forming with synchronous cooling of AA2024-H18 aluminum alloy",

abstract = "Hot forming test with synchronous cooling, metallographic and TEM observation and tensile test were performed to investigate the influence of hot forming with synchronous cooling operations on the microstructure evolution and strengthening mechanism of AA2024-H18 aluminum alloy. The results show that, the yield strength of hot formed AA2024 sheet with 96 h natural aging is 4\%, which is superior to that of traditionally formed sheet, and meanwhile, the tensile strength is increased by 12\%. Based on the microstructure observation and analysis, the strengthening is generated by the increase of the dislocation density and precipitation of some fine acicular particles in form of Al2CuMg (S'). The main strengthening mechanism of AA2024 aluminum alloy underwent hot forming with synchronous cooling is the pinning effect of dispersoid phase Al20Cu2Mn3 (T) and precipitated phase Al2CuMg (S') on dislocation as well as the interaction of dislocation.",

keywords = "AA2024 aluminum alloy, Hot forming with synchronous cooling, Mechanical behavior, Microstructure, Strengthening mechanism",

author = "Chen, \{Guo Liang\} and Chen, \{Ming He\} and Ning Wang and Sun, \{Jia Wei\}",

year = "2017",

month = jul,

day = "1",

doi = "10.19476/j.ysxb.1004.0609.2017.07.03",

language = "英语",

volume = "27",

pages = "1337--1343",

journal = "Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals",

issn = "1004-0609",

publisher = "Central South University",

number = "7",

}

TY - JOUR

T1 - Strengthening mechanism of hot forming with synchronous cooling of AA2024-H18 aluminum alloy

AU - Chen, Guo Liang

AU - Chen, Ming He

AU - Wang, Ning

AU - Sun, Jia Wei

PY - 2017/7/1

Y1 - 2017/7/1

N2 - Hot forming test with synchronous cooling, metallographic and TEM observation and tensile test were performed to investigate the influence of hot forming with synchronous cooling operations on the microstructure evolution and strengthening mechanism of AA2024-H18 aluminum alloy. The results show that, the yield strength of hot formed AA2024 sheet with 96 h natural aging is 4%, which is superior to that of traditionally formed sheet, and meanwhile, the tensile strength is increased by 12%. Based on the microstructure observation and analysis, the strengthening is generated by the increase of the dislocation density and precipitation of some fine acicular particles in form of Al2CuMg (S'). The main strengthening mechanism of AA2024 aluminum alloy underwent hot forming with synchronous cooling is the pinning effect of dispersoid phase Al20Cu2Mn3 (T) and precipitated phase Al2CuMg (S') on dislocation as well as the interaction of dislocation.

AB - Hot forming test with synchronous cooling, metallographic and TEM observation and tensile test were performed to investigate the influence of hot forming with synchronous cooling operations on the microstructure evolution and strengthening mechanism of AA2024-H18 aluminum alloy. The results show that, the yield strength of hot formed AA2024 sheet with 96 h natural aging is 4%, which is superior to that of traditionally formed sheet, and meanwhile, the tensile strength is increased by 12%. Based on the microstructure observation and analysis, the strengthening is generated by the increase of the dislocation density and precipitation of some fine acicular particles in form of Al2CuMg (S'). The main strengthening mechanism of AA2024 aluminum alloy underwent hot forming with synchronous cooling is the pinning effect of dispersoid phase Al20Cu2Mn3 (T) and precipitated phase Al2CuMg (S') on dislocation as well as the interaction of dislocation.

KW - AA2024 aluminum alloy

KW - Hot forming with synchronous cooling

KW - Mechanical behavior

KW - Microstructure

KW - Strengthening mechanism

UR - https://www.scopus.com/pages/publications/85031288125

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DO - 10.19476/j.ysxb.1004.0609.2017.07.03

M3 - 文章

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SN - 1004-0609

VL - 27

SP - 1337

EP - 1343

JO - Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals

JF - Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals

IS - 7

ER -

Strengthening mechanism of hot forming with synchronous cooling of AA2024-H18 aluminum alloy

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Keywords

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