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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:
 [1]; ORCiD logo [2];  [1];  [2];  [3];  [1];  [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science & Technology Division
  2. Brigham Young Univ., Provo, UT (United States). Manufacturing Engineering Technology
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Publication Date:
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.
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.
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.
@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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Cited by: 2 works
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