Effects of pre-treatment conditions on warm hydroformability of 7075 aluminum tubes

Lee, Mun‐Yong; Sohn, Sung-Man; Kang, Chang-Yong; Suh, Dong‐Woo; Lee, Sang-Yong

doi:10.1016/j.jmatprotec.2004.04.200

Cited by 36 publications

(16 citation statements)

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“…Choice of fluid media and its heating and pressurizing, measurement and control of the temperature of tool and tribology are some other important subjects [4,5]. Nowadays, the maximum temperature for hydroforming of aluminum and magnesium alloys (tubes and sheets) is about 300 • C, due to the absence of appropriate fluid media which can work effectively at higher temperature [6,7].…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation into the formability of hydroforming 5A02 Al-tubes at elevated temperature

Yuan

Zhang

2006

Journal of Materials Processing Technology

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Section: Introductionmentioning

confidence: 99%

An experimental investigation into the formability of hydroforming 5A02 Al-tubes at elevated temperature

Yuan

Zhang

2006

Journal of Materials Processing Technology

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“…As previously mentioned by Lee et al [1], the thermal history of the blank during the process could degrade the final mechanical properties of the material. In order to analyse the mechanical properties of the final component, standard tensile samples after the ASTM E8-04 standard have been cut off using wire EDM technology from the component as shown in 'figure 5' for both process variants.…”

Section: Final Materials Propertiesmentioning

confidence: 91%

“…However, being an age-hardenable family, the increase of temperature during forming degrades the final mechanical properties of the material. Regarding the forming process, Lee et al [1] studied the warm hydroformability of 7075 tubes between room temperature to 300ºC. The results showed that sufficient formability of high strength aluminium alloys could be achieved by the selection of the pertinent pre-treatment conditions and deformation temperatures.…”

Section: Introductionmentioning

confidence: 99%

Hot stamping of AA7075 aluminum sheets

Mendiguren

Argandoña

Galdos

2016

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In this work the formability of a high strength aluminium alloy (AA7075-T6) for the stamping of an automotive component has been studied. Due to the low formability of the selected alloy, two different heat assisted forming strategies have been analysed. On the one hand, the W-temper process, where the thermal process is carried out prior to the forming operation. On the other hand, the hot stamping process, where the thermal process is carried out at the same time as the forming. The results showed that both technology were able to form the component avoiding any failure of the material. On the contrary, both processes reduced the final mechanical properties of the material compared to the as received material condition. However, the obtained mechanical properties doubled the strength of commonly used 5xxx and 6xxx aluminium alloys.

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“…A recent study shows that pertinent pre-treatment condition and deformation temperature can ensure sufficient formability for 7xxx series alloy. Apart from that, AA7075 tubes was warm hydroformed at a temperature of 300 ºC and significant improvement of formability was achieved [32]. Wang et al [33] presented a paper where material characterization of AA7075-T6 material was performed.…”

Section: Developments In Aluminium Alloysmentioning

confidence: 99%

Reviews on the Forming Process of Heat Treatable Aluminium Alloys

Yahaya

Lai

et al. 2018

IJIE

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Available forming process applied for heat treatable aluminium alloy were reviewed and presented in this paper. The reviews emphasized on the heat treatment, application and contribution of the forming methods. Forming methods discussed includes traditional, warm forming, hydroforming, superplastic forming, hot forming with in-die quench (HFQ) and hot press forming (HPF). The effects of forming processes towards heat treatable aluminium alloy were presented through the understanding on each process strengthening phenomena and the heat treating phenomena. These were to ensure better understanding on heat treatable aluminium alloy composition changes throughout forming process. Finally, concluding remarks the underline challenges of forming heattreatable aluminium alloy and subsequently highlights the potential work that can be applied in order to ensure a more efficient and sustainable manufacturing agenda for heat treatable aluminium alloy.

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Effects of pre-treatment conditions on warm hydroformability of 7075 aluminum tubes

Cited by 36 publications

References 1 publication

An experimental investigation into the formability of hydroforming 5A02 Al-tubes at elevated temperature

An experimental investigation into the formability of hydroforming 5A02 Al-tubes at elevated temperature

Hot stamping of AA7075 aluminum sheets

Reviews on the Forming Process of Heat Treatable Aluminium Alloys

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