Joining of High Strength Low Ductility AA7055 by Friction Self-piercing Rivet

Yong Chae Lim; Hui Huang; Yiyu Wang; Yuan Li; Zhili Feng

doi:10.1007/978-3-031-22661-8_11

Joining of High Strength Low Ductility AA7055 by Friction Self-piercing Rivet

Yong Chae Lim, Hui Huang, Yiyu Wang, Yuan Li, Zhili Feng

Materials Joining

Oak Ridge National Laboratory

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

High strength aluminum (Al) alloy is one of higher specific strength materials for decarbonization in transportation industries. Because of low ductility at room temperature, conventional mechanical fastening such as self-piercing riveting produces cracks at the joint. In this work, we applied friction self-piercing riveting to join Al alloy (AA) 7055. No cracks were observed in the joints because of the improved local ductility of Al alloy by the generated frictional heat during joining step. Numerical modeling of joining process was applied to guide rivet geometry design and rivet material strength. Mechanical integrity of the AA7055 joints was assessed by lap shear tensile and cross-tension testing. Metallurgical characterizations revealed solid-state bonding formed not only between the rivet and surround Al materials, but also upper and lower Al sheets at the joint interface. Both solid-state bonding and mechanical interlocking between the flared rivet and bottom AA7055 sheet were the major joint mechanisms.

Original language	English
Title of host publication	Friction Stir Welding and Processing XII
Editors	Yuri Hovanski, Yutaka Sato, Piyush Upadhyay, Anton A. Naumov, Nilesh Kumar
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	117-126
Number of pages	10
ISBN (Print)	9783031226601
DOIs	https://doi.org/10.1007/978-3-031-22661-8_11
State	Published - 2023
Event	12th Symposium on Friction Stir Welding and Processing, held at the TMS Annual Meeting and Exhibition, TMS 2023 - San Diego, United States Duration: Mar 19 2023 → Mar 23 2023

Publication series

Name	Minerals, Metals and Materials Series
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	12th Symposium on Friction Stir Welding and Processing, held at the TMS Annual Meeting and Exhibition, TMS 2023
Country/Territory	United States
City	San Diego
Period	03/19/23 → 03/23/23

Bibliographical note

Publisher Copyright:
© 2023, The Minerals, Metals & Materials Society.

Funding

The authors acknowledge the financial support of the US Department of Energy Office of Energy Efficiency and Renewable Energy, Vehicle Technology Office, as part of Joining Core Program. Oak Ridge National Laboratory is managed by UT-Battelle, LLC for the US Department of Energy under Contract DE-AC05-00OR22725. The authors thank Russell Long at Arconic for providing materials. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC0500OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-accessplan). Acknowledgements The authors acknowledge the financial support of the US Department of Energy Office of Energy Efficiency and Renewable Energy, Vehicle Technology Office, as part of Joining Core Program. Oak Ridge National Laboratory is managed by UT-Battelle, LLC for the US Department of Energy under Contract DE-AC05-00OR22725. The authors thank Russell Long at Arconic for providing materials. This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).

Funders	Funder number
DOE Public Access Plan
US Department of Energy Office of Energy Efficiency and Renewable Energy, Vehicle Technology Office
United States Government
U.S. Department of Energy	DE-AC05-00OR22725
Oak Ridge National Laboratory

Keywords

Friction self-piercing riveting
High strength 7xxx Aluminum alloys
Mechanical joint properties
Solid-state joining

Access to Document

10.1007/978-3-031-22661-8_11

Cite this

Lim, Y. C., Huang, H., Wang, Y., Li, Y., & Feng, Z. (2023). Joining of High Strength Low Ductility AA7055 by Friction Self-piercing Rivet. In Y. Hovanski, Y. Sato, P. Upadhyay, A. A. Naumov, & N. Kumar (Eds.), Friction Stir Welding and Processing XII (pp. 117-126). (Minerals, Metals and Materials Series). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-031-22661-8_11

Lim, Yong Chae ; Huang, Hui ; Wang, Yiyu et al. / Joining of High Strength Low Ductility AA7055 by Friction Self-piercing Rivet. Friction Stir Welding and Processing XII. editor / Yuri Hovanski ; Yutaka Sato ; Piyush Upadhyay ; Anton A. Naumov ; Nilesh Kumar. Springer Science and Business Media Deutschland GmbH, 2023. pp. 117-126 (Minerals, Metals and Materials Series).

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title = "Joining of High Strength Low Ductility AA7055 by Friction Self-piercing Rivet",

abstract = "High strength aluminum (Al) alloy is one of higher specific strength materials for decarbonization in transportation industries. Because of low ductility at room temperature, conventional mechanical fastening such as self-piercing riveting produces cracks at the joint. In this work, we applied friction self-piercing riveting to join Al alloy (AA) 7055. No cracks were observed in the joints because of the improved local ductility of Al alloy by the generated frictional heat during joining step. Numerical modeling of joining process was applied to guide rivet geometry design and rivet material strength. Mechanical integrity of the AA7055 joints was assessed by lap shear tensile and cross-tension testing. Metallurgical characterizations revealed solid-state bonding formed not only between the rivet and surround Al materials, but also upper and lower Al sheets at the joint interface. Both solid-state bonding and mechanical interlocking between the flared rivet and bottom AA7055 sheet were the major joint mechanisms.",

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Lim, YC, Huang, H, Wang, Y, Li, Y & Feng, Z 2023, Joining of High Strength Low Ductility AA7055 by Friction Self-piercing Rivet. in Y Hovanski, Y Sato, P Upadhyay, AA Naumov & N Kumar (eds), Friction Stir Welding and Processing XII. Minerals, Metals and Materials Series, Springer Science and Business Media Deutschland GmbH, pp. 117-126, 12th Symposium on Friction Stir Welding and Processing, held at the TMS Annual Meeting and Exhibition, TMS 2023, San Diego, United States, 03/19/23. https://doi.org/10.1007/978-3-031-22661-8_11

Joining of High Strength Low Ductility AA7055 by Friction Self-piercing Rivet. / Lim, Yong Chae; Huang, Hui; Wang, Yiyu et al.
Friction Stir Welding and Processing XII. ed. / Yuri Hovanski; Yutaka Sato; Piyush Upadhyay; Anton A. Naumov; Nilesh Kumar. Springer Science and Business Media Deutschland GmbH, 2023. p. 117-126 (Minerals, Metals and Materials Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Lim, Yong Chae

AU - Huang, Hui

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AU - Li, Yuan

AU - Feng, Zhili

PY - 2023

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N2 - High strength aluminum (Al) alloy is one of higher specific strength materials for decarbonization in transportation industries. Because of low ductility at room temperature, conventional mechanical fastening such as self-piercing riveting produces cracks at the joint. In this work, we applied friction self-piercing riveting to join Al alloy (AA) 7055. No cracks were observed in the joints because of the improved local ductility of Al alloy by the generated frictional heat during joining step. Numerical modeling of joining process was applied to guide rivet geometry design and rivet material strength. Mechanical integrity of the AA7055 joints was assessed by lap shear tensile and cross-tension testing. Metallurgical characterizations revealed solid-state bonding formed not only between the rivet and surround Al materials, but also upper and lower Al sheets at the joint interface. Both solid-state bonding and mechanical interlocking between the flared rivet and bottom AA7055 sheet were the major joint mechanisms.

AB - High strength aluminum (Al) alloy is one of higher specific strength materials for decarbonization in transportation industries. Because of low ductility at room temperature, conventional mechanical fastening such as self-piercing riveting produces cracks at the joint. In this work, we applied friction self-piercing riveting to join Al alloy (AA) 7055. No cracks were observed in the joints because of the improved local ductility of Al alloy by the generated frictional heat during joining step. Numerical modeling of joining process was applied to guide rivet geometry design and rivet material strength. Mechanical integrity of the AA7055 joints was assessed by lap shear tensile and cross-tension testing. Metallurgical characterizations revealed solid-state bonding formed not only between the rivet and surround Al materials, but also upper and lower Al sheets at the joint interface. Both solid-state bonding and mechanical interlocking between the flared rivet and bottom AA7055 sheet were the major joint mechanisms.

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PB - Springer Science and Business Media Deutschland GmbH

T2 - 12th Symposium on Friction Stir Welding and Processing, held at the TMS Annual Meeting and Exhibition, TMS 2023

Y2 - 19 March 2023 through 23 March 2023

ER -

Lim YC, Huang H, Wang Y, Li Y, Feng Z. Joining of High Strength Low Ductility AA7055 by Friction Self-piercing Rivet. In Hovanski Y, Sato Y, Upadhyay P, Naumov AA, Kumar N, editors, Friction Stir Welding and Processing XII. Springer Science and Business Media Deutschland GmbH. 2023. p. 117-126. (Minerals, Metals and Materials Series). doi: 10.1007/978-3-031-22661-8_11

Joining of High Strength Low Ductility AA7055 by Friction Self-piercing Rivet

Abstract

Publication series

Conference

Bibliographical note

Funding

Keywords

Access to Document

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