Heat treatment characteristic of 7005 Al alloy employed in railway trains

Zheng An Wang; Ming Pu Wang; Zhou Li; Wen Chao Yang; Cong Wen Xiao

Heat treatment characteristic of 7005 Al alloy employed in railway trains

Zheng An Wang, Ming Pu Wang, Zhou Li, Wen Chao Yang, Cong Wen Xiao

Central South University

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

10 Scopus citations

Abstract

The heat treatment characteristic of the 7005 aluminum alloys was studied by mechanical properties measurement and TEM. The results show that, during the process of aging at 105°C after on-line quenching, the hardness(HB) of alloy increases quickly at first and reach about 100 HB after aging for 8h and 125 HB after 50 h, then the hardness increases slowly with increasing aging time, and the hardness does not reach the peak value even the alloy is aged for 200 h. After aging at (105°C, 8 h)+(155°C, 8 h), the mechanical properties of 7005 aluminum alloy are σ_b=395 MPa, σ_0.2=330 MPa, δ=12%, 117 HB. If the aging of alloy at high temperature (155°C, 180°C) or the two-stage aging is too long, the precipitated phases of the alloy will grow and coarsen, and then the alloy strength decreases.

Original language	English
Pages (from-to)	1110-1115
Number of pages	6
Journal	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
Volume	20
Issue number	6
State	Published - Jun 2010
Externally published	Yes

Keywords

7005 Al alloy
Aging
Heat treatment characteristic
Mechanical properties
Quenching

Cite this

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title = "Heat treatment characteristic of 7005 Al alloy employed in railway trains",

abstract = "The heat treatment characteristic of the 7005 aluminum alloys was studied by mechanical properties measurement and TEM. The results show that, during the process of aging at 105°C after on-line quenching, the hardness(HB) of alloy increases quickly at first and reach about 100 HB after aging for 8h and 125 HB after 50 h, then the hardness increases slowly with increasing aging time, and the hardness does not reach the peak value even the alloy is aged for 200 h. After aging at (105°C, 8 h)+(155°C, 8 h), the mechanical properties of 7005 aluminum alloy are σb=395 MPa, σ0.2=330 MPa, δ=12%, 117 HB. If the aging of alloy at high temperature (155°C, 180°C) or the two-stage aging is too long, the precipitated phases of the alloy will grow and coarsen, and then the alloy strength decreases.",

keywords = "7005 Al alloy, Aging, Heat treatment characteristic, Mechanical properties, Quenching",

author = "Wang, {Zheng An} and Wang, {Ming Pu} and Zhou Li and Yang, {Wen Chao} and Xiao, {Cong Wen}",

year = "2010",

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TY - JOUR

T1 - Heat treatment characteristic of 7005 Al alloy employed in railway trains

AU - Wang, Zheng An

AU - Wang, Ming Pu

AU - Li, Zhou

AU - Yang, Wen Chao

AU - Xiao, Cong Wen

PY - 2010/6

Y1 - 2010/6

N2 - The heat treatment characteristic of the 7005 aluminum alloys was studied by mechanical properties measurement and TEM. The results show that, during the process of aging at 105°C after on-line quenching, the hardness(HB) of alloy increases quickly at first and reach about 100 HB after aging for 8h and 125 HB after 50 h, then the hardness increases slowly with increasing aging time, and the hardness does not reach the peak value even the alloy is aged for 200 h. After aging at (105°C, 8 h)+(155°C, 8 h), the mechanical properties of 7005 aluminum alloy are σb=395 MPa, σ0.2=330 MPa, δ=12%, 117 HB. If the aging of alloy at high temperature (155°C, 180°C) or the two-stage aging is too long, the precipitated phases of the alloy will grow and coarsen, and then the alloy strength decreases.

AB - The heat treatment characteristic of the 7005 aluminum alloys was studied by mechanical properties measurement and TEM. The results show that, during the process of aging at 105°C after on-line quenching, the hardness(HB) of alloy increases quickly at first and reach about 100 HB after aging for 8h and 125 HB after 50 h, then the hardness increases slowly with increasing aging time, and the hardness does not reach the peak value even the alloy is aged for 200 h. After aging at (105°C, 8 h)+(155°C, 8 h), the mechanical properties of 7005 aluminum alloy are σb=395 MPa, σ0.2=330 MPa, δ=12%, 117 HB. If the aging of alloy at high temperature (155°C, 180°C) or the two-stage aging is too long, the precipitated phases of the alloy will grow and coarsen, and then the alloy strength decreases.

KW - 7005 Al alloy

KW - Aging

KW - Heat treatment characteristic

KW - Mechanical properties

KW - Quenching

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SN - 1004-0609

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EP - 1115

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

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

IS - 6

ER -

Heat treatment characteristic of 7005 Al alloy employed in railway trains

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Keywords

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