Galvanic Corrosion and Mechanical Behavior of Fiber Metal Laminates of Metallic Glass and Carbon Fiber Composites. Issue 2 (9th October 2017)

• Record Type: Journal Article
• Authors: Hamill, Lee; Hofmann, Douglas C.; Nutt, Steven
• Is Part Of: Advanced engineering materials. Volume 20:Issue 2(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-10-09
• Subjects: bulk metallic glass -- fiber metal laminates -- galvanic corrosion -- prepreg; Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201700711
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : The possibility of galvanic corrosion typically prohibits the pairing of carbon fiber and aluminum in a fiber metal laminate (FML). In this study, the authors describe a new type of FML comprised of alternating layers of bulk metallic glass (BMG) and carbon fiber reinforced polymer (CFRP) composite. The authors compare the galvanic coupling and mechanical behavior of an Al‐based FML and a BMG‐CFRP FML. Results show that when paired with CFRPs, BMG exhibits far less galvanic corrosion than aluminum paired with CFRP. In fact, the corrosion between BMG and CFRP is similar in magnitude to the corrosion between aluminum and glass fiber, the two constituent materials of GLARE, the most widely used FML. While interlaminar shear strength and flexural strength are similar for both FML types, the tensile strength and modulus of BMG‐based FMLs are greater than those of Al‐based FMLs. Abstract : The galvanic corrosion resistance and mechanical performance of two fiber metal laminates are compared. Results show negligible galvanic corrosion and increased tensile strength and modulus in BMG‐CFRP laminates when compared to AL‐CFRP counterparts. To date, very few galvanic corrosion resistant options exist for CFRP‐based FMLs, and the results of this study expand those options.