Influence of the Quenching Rate and Natural Ageing Duration on the Formability and Mechanical Properties of EN AW-7075

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Original languageEnglish
Title of host publicationForming the Future
Subtitle of host publicationProceedings of the 13th International Conference on the Technology of Plasticity
EditorsGlenn Daehn, Jian Cao, Brad Kinsey, Erman Tekkaya, Anupam Vivek, Yoshinori Yoshida
Pages959-971
Number of pages13
Publication statusPublished - 2021
Event13th International Conference on the Technology of Plasticity, ICTP 2021 - Virtual, Online
Duration: 25 Jul 202130 Jul 2021

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (electronic)2367-1696

Abstract

Due to the low density and high tensile strength, the aluminium alloy EN AW-7075 offers a high lightweight potential for structural components. In recent years, 7xxx-aluminium alloys have been the subject of numerous investigations in the field of warm and hot forming and suitable heat treatments to fully use their potential for applications in automotive bodies. Alternatively, forming blanks of these alloys at room temperature in the W-temper state is favourable since conventional tools can be used. However, this condition is unstable. As the ageing duration after quenching increases, the formability decreases due to natural ageing. Hence, the objective of this investigation was to determine the formability of EN AW-7075 as a function of the ageing time. Furthermore, since the quenching rate after solution heat treatment influences the resulting mechanical properties, an adapted process route to manufacture components with tailored properties was explored. For this purpose, samples were partially quenched after solution heat treatment and then artificially aged. To determine the influence of the quenching rate, hardness tests were carried out.

Keywords

    7xxx-aluminium alloys, Cold forming, Formability, Tailored tempering

ASJC Scopus subject areas

Cite this

Influence of the Quenching Rate and Natural Ageing Duration on the Formability and Mechanical Properties of EN AW-7075. / Behrens, B. A.; Hübner, S.; Vogt, H. et al.
Forming the Future : Proceedings of the 13th International Conference on the Technology of Plasticity. ed. / Glenn Daehn; Jian Cao; Brad Kinsey; Erman Tekkaya; Anupam Vivek; Yoshinori Yoshida. 2021. p. 959-971 (Minerals, Metals and Materials Series).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Behrens, BA, Hübner, S, Vogt, H, Golovko, O, Behrens, S & Nürnberger, F 2021, Influence of the Quenching Rate and Natural Ageing Duration on the Formability and Mechanical Properties of EN AW-7075. in G Daehn, J Cao, B Kinsey, E Tekkaya, A Vivek & Y Yoshida (eds), Forming the Future : Proceedings of the 13th International Conference on the Technology of Plasticity. Minerals, Metals and Materials Series, pp. 959-971, 13th International Conference on the Technology of Plasticity, ICTP 2021, Virtual, Online, 25 Jul 2021. https://doi.org/10.1007/978-3-030-75381-8_80
Behrens, B. A., Hübner, S., Vogt, H., Golovko, O., Behrens, S., & Nürnberger, F. (2021). Influence of the Quenching Rate and Natural Ageing Duration on the Formability and Mechanical Properties of EN AW-7075. In G. Daehn, J. Cao, B. Kinsey, E. Tekkaya, A. Vivek, & Y. Yoshida (Eds.), Forming the Future : Proceedings of the 13th International Conference on the Technology of Plasticity (pp. 959-971). (Minerals, Metals and Materials Series). https://doi.org/10.1007/978-3-030-75381-8_80
Behrens BA, Hübner S, Vogt H, Golovko O, Behrens S, Nürnberger F. Influence of the Quenching Rate and Natural Ageing Duration on the Formability and Mechanical Properties of EN AW-7075. In Daehn G, Cao J, Kinsey B, Tekkaya E, Vivek A, Yoshida Y, editors, Forming the Future : Proceedings of the 13th International Conference on the Technology of Plasticity. 2021. p. 959-971. (Minerals, Metals and Materials Series). Epub 2021 Jul 11. doi: 10.1007/978-3-030-75381-8_80
Behrens, B. A. ; Hübner, S. ; Vogt, H. et al. / Influence of the Quenching Rate and Natural Ageing Duration on the Formability and Mechanical Properties of EN AW-7075. Forming the Future : Proceedings of the 13th International Conference on the Technology of Plasticity. editor / Glenn Daehn ; Jian Cao ; Brad Kinsey ; Erman Tekkaya ; Anupam Vivek ; Yoshinori Yoshida. 2021. pp. 959-971 (Minerals, Metals and Materials Series).
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title = "Influence of the Quenching Rate and Natural Ageing Duration on the Formability and Mechanical Properties of EN AW-7075",
abstract = "Due to the low density and high tensile strength, the aluminium alloy EN AW-7075 offers a high lightweight potential for structural components. In recent years, 7xxx-aluminium alloys have been the subject of numerous investigations in the field of warm and hot forming and suitable heat treatments to fully use their potential for applications in automotive bodies. Alternatively, forming blanks of these alloys at room temperature in the W-temper state is favourable since conventional tools can be used. However, this condition is unstable. As the ageing duration after quenching increases, the formability decreases due to natural ageing. Hence, the objective of this investigation was to determine the formability of EN AW-7075 as a function of the ageing time. Furthermore, since the quenching rate after solution heat treatment influences the resulting mechanical properties, an adapted process route to manufacture components with tailored properties was explored. For this purpose, samples were partially quenched after solution heat treatment and then artificially aged. To determine the influence of the quenching rate, hardness tests were carried out.",
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AU - Vogt, H.

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N1 - Funding Information: Acknowledgments The project “Tailored Tempering of 7xxx-Aluminum Alloys” Ref.-No. AiF 20190N was financed and supervised by the European Research Association for Sheet Metal Working (EFB). In the scope of the program to promote Industrial Collective Research, it was funded by the German Federation of Industrial Research Associations (AiF) by means of the Federal Ministry of Economic Affairs and Energy (BMWi) on the basis of a decision by the German Bundestag. Furthermore, the authors would like to thank the industrial partners in this research project.

PY - 2021

Y1 - 2021

N2 - Due to the low density and high tensile strength, the aluminium alloy EN AW-7075 offers a high lightweight potential for structural components. In recent years, 7xxx-aluminium alloys have been the subject of numerous investigations in the field of warm and hot forming and suitable heat treatments to fully use their potential for applications in automotive bodies. Alternatively, forming blanks of these alloys at room temperature in the W-temper state is favourable since conventional tools can be used. However, this condition is unstable. As the ageing duration after quenching increases, the formability decreases due to natural ageing. Hence, the objective of this investigation was to determine the formability of EN AW-7075 as a function of the ageing time. Furthermore, since the quenching rate after solution heat treatment influences the resulting mechanical properties, an adapted process route to manufacture components with tailored properties was explored. For this purpose, samples were partially quenched after solution heat treatment and then artificially aged. To determine the influence of the quenching rate, hardness tests were carried out.

AB - Due to the low density and high tensile strength, the aluminium alloy EN AW-7075 offers a high lightweight potential for structural components. In recent years, 7xxx-aluminium alloys have been the subject of numerous investigations in the field of warm and hot forming and suitable heat treatments to fully use their potential for applications in automotive bodies. Alternatively, forming blanks of these alloys at room temperature in the W-temper state is favourable since conventional tools can be used. However, this condition is unstable. As the ageing duration after quenching increases, the formability decreases due to natural ageing. Hence, the objective of this investigation was to determine the formability of EN AW-7075 as a function of the ageing time. Furthermore, since the quenching rate after solution heat treatment influences the resulting mechanical properties, an adapted process route to manufacture components with tailored properties was explored. For this purpose, samples were partially quenched after solution heat treatment and then artificially aged. To determine the influence of the quenching rate, hardness tests were carried out.

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