Dynamic microstructural evolution of an Al–Zn–Mg–Cu alloy (7075) during continuous heating and the influence on the viscoelastic response

Rojas, Jose I.; Crespo, Daniel

doi:10.1016/j.matchar.2017.11.018

Cited by 23 publications

(2 citation statements)

References 39 publications

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“…This process consists of solution heat treatment, forming and die quenching and artificial aging. However, solution heat treatment always takes several minutes or hours to achieve a full single phase solid solution state [2][3][4][5][6]. The traditional solution heat treatment is indeed a time-consuming work which hindered its wide application.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Contact Heating Method in Solid Solution Process of Aluminum Alloy

An¹,

Xie²,

Sun³

et al. 2023

Atlantis Highlights in Materials Science and Technology

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In this paper, the contact heating method was adopted to heat the aluminum alloy instead of furnace heating. During the process, the aluminum alloy sheet was placed in the preheated flat die under a certain press force for several seconds until the sheet reach the preset temperature. The heating curves were recorded by thermal couples buried in the heating die blocks. Microstructure after contact heating was observe by transmission electron microscope. The results show that sheet temperature rises quickly after the heating die closed and the temperature can reach 475 °C in 10 s which is much faster than furnace heating. Microstructure evolution confirms that solid solution is almost completed after contact heating.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Contact Heating Method in Solid Solution Process of Aluminum Alloy

An¹,

Xie²,

Sun³

et al. 2023

Atlantis Highlights in Materials Science and Technology

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show abstract

“…However, due to the lower emissivity of aluminum alloy, the heating rate of aluminum alloy sheets by radiation heating is only about 0.4 • C/s [16], which seriously affects the hot stamping efficiency of the aluminum alloy. For example, to achieve good performance, the heat treatment of 7075 aluminum alloy in hot stamping usually consists of solution treatment at 480 • C for 1 h and artificial aging at 120 • C for 24 h [17][18][19]. To shorten the heating time and improve the hot stamping productivity, attempts have been made to improve the process to achieve more efficient heat treatment of aluminum alloys [20,21].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Contact Heating of Aluminum Alloy Sheets in Hot Stamping Process

Geng

Wang

et al. 2019

Metals

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Application of the hot stamping process on heat-treatable aluminum alloys effectively solves the problems of large springback and poor ductility during forming at room temperature, which expands the range of applications of aluminum alloys in the transportation industry. Sheet heating plays an important role in the hot stamping process, and increasing the heating rate can improve the hot stamping efficiency to some extent. In this paper, the feasibility of applying contact heating techniques with higher heating rates in the hot stamping process was studied. A contact heating device was designed, and the temperature distribution of the device contact surface was observed. Furthermore, the heating characteristics of 7075 aluminum alloy sheets during the contact heating process were explored by experiments and finite element simulation. Finally, the rapid solution treatment of aluminum alloy was carried out with a contact heating device, which was compared with the furnace heating solution treatment. The experimental and simulation results indicate that the device contact surface has a relatively uniform temperature distribution, and the aluminum alloy sheets can be heated to close to the set temperature in 15 s using contact heating techniques. Meanwhile, the rapid solution treatment of aluminum alloy sheets can be achieved within 15–20 s by contact heating techniques, obtaining superior mechanical properties. This suggests that the contact heating process can be used for rapid heating and rapid solution treatment of aluminum alloy sheets in hot stamping process.

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Effect of Spinning Deformation on Microstructure Evolution and Mechanical Properties of Al-Zn-Mg-Cu (7075) Alloy

Zheng

Chen

Wang

et al. 2022

J. of Materi Eng and Perform

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Dynamic microstructural evolution of an Al–Zn–Mg–Cu alloy (7075) during continuous heating and the influence on the viscoelastic response

Cited by 23 publications

References 39 publications

Experimental Study on Contact Heating Method in Solid Solution Process of Aluminum Alloy

Experimental Study on Contact Heating Method in Solid Solution Process of Aluminum Alloy

Investigation on Contact Heating of Aluminum Alloy Sheets in Hot Stamping Process

Effect of Spinning Deformation on Microstructure Evolution and Mechanical Properties of Al-Zn-Mg-Cu (7075) Alloy

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