Title: Mechanical and Corrosion Assessment of Friction Self-Piercing Rivet Joint of Carbon Fiber-Reinforced Polymer and Magnesium Alloy AZ31B

Abstract

In the present work, thermoset carbon fiber–reinforced polymer (CFRP) was spot joined to magnesium alloy AZ31B by a friction self-piercing riveting (F-SPR) process. Lap shear tensile and cross-tension testing were used to evaluate the mechanical joint performance. An average lap shear tensile load of 5.18 kN was achieved, while an average of 2.81 kN was found from cross-tension testing. All F-SPR samples showed a pullout of AZ31B after mechanical testing, indicating good mechanical interlocking between the steel rivet and AZ31B. Corrosion potential was measured for each material to establish the galvanic corrosion characteristics. As expected, AZ31B was found to be the most active, while thermoset CFRP was the most noble. The steel rivet fell between the AZ31B (active) and the thermoset CFRP (noble). Salt fog corrosion testing (ASTM B-117) was performed to evaluate the corrosion performance of the uncoated F-SPR joint. With up to 200 h of exposure, the post-corroded F-SPR joint integrity retained 81.2% of the pre-exposure F-SPR joint strength with AZ31B pullout failure mode. From cross-sectional analysis of the F-SPR joint, extensive corrosion of AZ31B was observed at the joint and other exposure areas. However, steel rivet was not significantly corroded due to sacrificial anode effect by whichmore » AZ31B corroded first in the galvanic couple.« less

Authors:

Lim, Yong Chae  ^[1];

• Search DOE PAGES for author "Lim, Yong Chae"
• Search DOE PAGES for ORCID "0000-0003-2177-3988"

Chen, Jian  ^[1];

• Search DOE PAGES for author "Chen, Jian"
• Search DOE PAGES for ORCID "0000-0001-6532-1081"

Jun, Jiheon  ^[1];

• Search DOE PAGES for author "Jun, Jiheon"
• Search DOE PAGES for ORCID "0000-0001-9500-5637"

Leonard, Donovan N.  ^[1];

• Search DOE PAGES for author "Leonard, Donovan N."
• Search DOE PAGES for ORCID "0000-0002-1806-4526"

Brady, Michael P.  ^[1];

• Search DOE PAGES for author "Brady, Michael P."
• Search DOE PAGES for ORCID "0000-0003-1338-4747"

Warren, Charles David ^[1]; Feng, Zhili  ^[1]

• Search DOE PAGES for author "Feng, Zhili"
• Search DOE PAGES for ORCID "0000-0001-6573-7933"

---

+ Show Author Affiliations

1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:

Fri Oct 23 00:00:00 EDT 2020

Research Org.:

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

Sponsoring Org.:

USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:

1694368

Grant/Contract Number:  

AC05-00OR22725

Resource Type:

Accepted Manuscript

Journal Name:

Journal of Manufacturing Science and Engineering

Additional Journal Information:

Journal Volume: 143; Journal Issue: 3; Journal ID: ISSN 1087-1357

Publisher:

ASME

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE