Corrosion behaviour of friction-bit-joined and weld-bonded AA7075-T6/galvannealed DP980

doi:10.1080/13621718.2016.1255404

Title: Corrosion behaviour of friction-bit-joined and weld-bonded AA7075-T6/galvannealed DP980

Abstract

Joining of aluminium alloys 7075-T6 and galvannealed dual phase 980 steel was achieved by friction bit joining (FBJ) and weld-bonding (FBJ + adhesive) processes. Accelerated laboratory-scale corrosion tests were performed on both FBJ only and weld-bonded specimens to study joint strength under a corrosive environment. Static lap shear tests showed that both FBJ only and weld-bonded cases generally retained more than 80% of the joint strength of non-corroded specimens at the end of corrosion testing. The presence of Zn/Fe coating on the steel substrate resulted in improved corrosion resistance for FBJ specimens, compared to joints produced with bare steel. Finally, an optical microscopy was used for cross-sectional analysis of corroded specimens. Some corrosion on the joining bit was observed near the bit head. However, the joining bit was still intact on the steel substrate, indicating that the primary bond was sound.

Authors:

Lim, Yong Chae ^[1];

^[2]; Pan, Tsung-Yu ^[1]; Miles, Michael ^[2]; Keum, Jong Kahk ^[3]; Song, Guang-Ling ^[1]; Wang, Yanli ^[1]; Feng, Zhili ^[1]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
Brigham Young Univ., Provo, UT (United States). Manufacturing Engineering Technology
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Publication Date:: 2016-12-22

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)

OSTI Identifier:: 1360014

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Science and Technology of Welding and Joining

Additional Journal Information:: Journal Volume: 22; Journal Issue: 6; Journal ID: ISSN 1362-1718

Publisher:: Taylor & Francis

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Dissimilar material joining; aluminium alloy; galvannealed dual phase steel; friction bit joining; mechanical properties; corrosion

Citation Formats


                    Lim, Yong Chae, Squires, Lile, Pan, Tsung-Yu, Miles, Michael, Keum, Jong Kahk, Song, Guang-Ling, Wang, Yanli, and Feng, Zhili. Corrosion behaviour of friction-bit-joined and weld-bonded AA7075-T6/galvannealed DP980.  United States: N. p., 2016. 
        Web.  doi:10.1080/13621718.2016.1255404.

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                    Lim, Yong Chae, Squires, Lile, Pan, Tsung-Yu, Miles, Michael, Keum, Jong Kahk, Song, Guang-Ling, Wang, Yanli, & Feng, Zhili. Corrosion behaviour of friction-bit-joined and weld-bonded AA7075-T6/galvannealed DP980.  United States.  doi:10.1080/13621718.2016.1255404.

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                    Lim, Yong Chae, Squires, Lile, Pan, Tsung-Yu, Miles, Michael, Keum, Jong Kahk, Song, Guang-Ling, Wang, Yanli, and Feng, Zhili. Thu .  
        "Corrosion behaviour of friction-bit-joined and weld-bonded AA7075-T6/galvannealed DP980".  United States.  doi:10.1080/13621718.2016.1255404.  https://www.osti.gov/servlets/purl/1360014.

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@article{osti_1360014,

  title        = {Corrosion behaviour of friction-bit-joined and weld-bonded AA7075-T6/galvannealed DP980},

  author       = {Lim, Yong Chae and Squires, Lile and Pan, Tsung-Yu and Miles, Michael and Keum, Jong Kahk and Song, Guang-Ling and Wang, Yanli and Feng, Zhili},

  abstractNote = {Joining of aluminium alloys 7075-T6 and galvannealed dual phase 980 steel was achieved by friction bit joining (FBJ) and weld-bonding (FBJ + adhesive) processes. Accelerated laboratory-scale corrosion tests were performed on both FBJ only and weld-bonded specimens to study joint strength under a corrosive environment. Static lap shear tests showed that both FBJ only and weld-bonded cases generally retained more than 80% of the joint strength of non-corroded specimens at the end of corrosion testing. The presence of Zn/Fe coating on the steel substrate resulted in improved corrosion resistance for FBJ specimens, compared to joints produced with bare steel. Finally, an optical microscopy was used for cross-sectional analysis of corroded specimens. Some corrosion on the joining bit was observed near the bit head. However, the joining bit was still intact on the steel substrate, indicating that the primary bond was sound.},

  doi          = {10.1080/13621718.2016.1255404},

  journal      = {Science and Technology of Welding and Joining},

  number       = 6,

  volume       = 22,

  place        = {United States},

  year         = {2016},

  month        = {12}

}

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DOI: 10.1080/13621718.2016.1255404

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Works referenced in this record:

Innovative and Highly Productive Joining Technologies for Multi-Material Lightweight Car Body Structures
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journal, November 2013

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Multimaterial car body design: challenge for welding and joining
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Science and Technology of Welding and Joining, Vol. 11, Issue 2
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Huang, T.; Sato, Y. S.; Kokawa, H.
Metallurgical and Materials Transactions A, Vol. 40, Issue 12
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Study of mechanical joint strength of aluminum alloy 7075-T6 and dual phase steel 980 welded by friction bit joining and weld-bonding under corrosion medium
journal, March 2015

Lim, Yong Chae; Squires, Lile; Pan, Tsung-Yu
Materials & Design, Vol. 69
DOI: 10.1016/j.matdes.2014.12.043

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Title: Corrosion behaviour of friction-bit-joined and weld-bonded AA7075-T6/galvannealed DP980

Abstract

Citation Formats

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