Durability and flammability evaluation of SGA structural adhesive joints consisting of a thick adhesive layer for shipbuilding

Iwata, Toshiaki; Hayashibara, Hitoshi

doi:10.1080/00218464.2019.1581067

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…The SGA adhesives can fill gaps of a few millimeters and can be cured at room temperatures. Therefore, they are useful for on-site bonding, such as in repairing damaged parts and assembling large structures [3,6,7]. Moreover, they can be applied to functionally graded adhesive (FGA) joints [8,9] by taking advantage of their mutability of flexibility.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of the effects of adhesive thickness on the fracture behavior of structural acrylic adhesive joints under various loading rates

Sekiguchi

Sato

2021

International Journal of Adhesion and Adhesives

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Section: Introductionmentioning

confidence: 99%

Experimental investigation of the effects of adhesive thickness on the fracture behavior of structural acrylic adhesive joints under various loading rates

Sekiguchi

Sato

2021

International Journal of Adhesion and Adhesives

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“…The friction coefficient of Al 0.8 CrFeCoNiCu x alloy is inversely proportional to the Cu content, as the addition of Cu increases the content of the softer FCC phase. Table 5 shows wear rate calculation results of Al 0.8 CrFeCoNiCu x HEA coating and substrate, where the wear rate is calculated according to formula (2). Figure 14 shows the hardness and the wear rate curves of Al 0.8 CrFeCoNiCu x HEA coating.…”

Section: Areasmentioning

confidence: 99%

“…Aluminum alloy has been widely used in manufacturing, transport, aerospace and other fields due to its high specific strength, small specific weight, and good ductility [1][2][3]. However, due to poor surface hardness and low wear resistance, its application has been limited in some top-end areas.…”

Section: Introductionmentioning

confidence: 99%

Microstructure, mechanical, and corrosion resistance properties of Al_0.8CrFeCoNiCu_x high-entropy alloy coatings on aluminum by laser cladding

Shi

Olugbade

2020

Mater. Res. Express

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High-entropy alloys (HEAs) were used to improve the hardness, wear resistance, and corrosion resistance of steel surfaces by laser cladding due to their outstanding mechanical and corrosion resistance properties. However, there are only a few literary works on the improvement of wear resistance on the aluminum alloy surface by HEAs. In this work, the wear performance of laser cladded Al 0.8 CrFeNiCoAlCu x HEA coating on aluminum alloy with different Cu contents was investigated in detail. Moreover, phase structure, microstructure, bonding shear strength, and corrosion resistance of HEA coatings were studied by XRD, SEM, tensile device, and electrochemical workstation. The result shows that with the increase of the Cu content, the structure of the coatings changed from BCC1 and BCC2 phases to BCC1, BCC2, and FCC1 phases. Evident cracks were observed in the Al 0.8 CrFeCoNi HEA coating. Meanwhile, when x=0.25, the cracks disappeared, but the bonding shear strength was 79.6 MPa, only 34.7% of the substrate. At 0.5x1, the bonding shear strength of the Al 0.8 CrFeCoNiCu x HEA coatings went above 175.2 MPa. As Cu promotes the formation of FCC phase, the hardness of the Al 0.8 CrFeCoNiCu x HEA coating decreased as the Cu content increased. The effect of Cu on wear resistance has the same trend as with hardness. The wear rate of Al 0.8 CrFeCoNiCu 0.5 , Al 0.8 CrFeCoNiCu 0.75 , and Al 0.8 CrFeCoNiCu HEA alloys is only 3.4%, 4.02%, and 5.42%, respectively, of the substrate. The wear mechanisms of the substrate are that of delamination fracture and serious adhesion wear, while the wear mechanisms of Al 0.8 CrFeCoNiCu x (0.5x1) HEA coatings are that of adhesive and abrasive wear. The corrosion resistance of Al 0.8 CrFeCoNiCu x (0.5x1) HEA is better than that of the substrate in 1 mol l −1 H 2 SO 4 solution. Al 0.8 CrFeCoNiCu 0.5 has the best corrosion resistance that is characterized by pitting and intergranular corrosion.OPEN ACCESS RECEIVED increase the cracking sensitivity and affect the performance of the coating [7-10]. Therefore, the preparation of coatings on aluminum alloy has always been a problem in the field of LC.High-entropy alloy (HEA) has persistently been a hot research subject in the field of materials science [11][12][13], since it was developed in 2004. HEA is generally defined as alloys formed by five or more elements with a molar ratio between 5% and 35% and having an entropy greater than 11. RJ mol −1 ·K −1 [14]. HEAs have high strength and hardness, good corrosion resistance, and excellent thermal stability [15]. Khan et al [16] prepared a film of AlCrFeCoNiCu 0.5 HEA using magnetron sputtering technology and found that the alloy had an FCC and BCC dual-phase structure and a hardness value of 13 GPa. Luo et al [17] prepared the WC+Al x CrFeCoNiCu (0x1.5) composite by mixing WC with Al, Cr, Fe, Co, Ni, and Cu powders, by plasma sintering. Due to slow diffusion effect, the WC particles dispersed in the solid solution phase of HEA, and the WC+Al 0.5 CrFeCoNiCu composite exhibited a ...

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“…Thin adhesives have been recommended for achieving high joint strength for many adhesives [26,27]. However, studies on the thickness of SGA adhesives are scarce [28,29]. A comprehensive investigation of the relation of the adhesive thickness and the fracture mode for SGA adhesives is required.…”

Section: Introductionmentioning

confidence: 99%

Proposal of Evaluation Method for Crack Propagation Behaviors of Second-Generation Acrylic Adhesives under Mode I Static Loading

et al. 2023

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Second-generation acrylic (SGA) adhesives, possessing high strength and toughness, are applicable in automotive body structures. Few studies have considered the fracture toughness of the SGA adhesives. This study entailed a comparative analysis of the critical separation energy for all three SGA adhesives and an examination of the mechanical properties of the bond. Loading-unloading test was performed to evaluate crack propagation behaviors. In the loading–unloading test of the SGA adhesive with high ductility, plastic deformation was observed in the steel adherends; the arrest load dominated the propagation and non-propagation of crack for adhesive. The critical separation energy of this adhesive was assessed by the arrest load. In contrast, for the SGA adhesives with high tensile strength and modulus, the load suddenly decreased during loading, and the steel adherend was not plastically deformed. The critical separation energies of these adhesives were assessed using the inelastic load. The critical separation energies for all the adhesives were higher for thicker adhesive. Particularly, the critical separation energies of the highly ductile adhesives were more affected by the adhesive thickness than highly strength adhesives. The critical separation energy from the analysis using the cohesive zone model agreed with the experimental results.

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Durability and flammability evaluation of SGA structural adhesive joints consisting of a thick adhesive layer for shipbuilding

Cited by 9 publications

References 6 publications

Experimental investigation of the effects of adhesive thickness on the fracture behavior of structural acrylic adhesive joints under various loading rates

Experimental investigation of the effects of adhesive thickness on the fracture behavior of structural acrylic adhesive joints under various loading rates

Microstructure, mechanical, and corrosion resistance properties of Al_0.8CrFeCoNiCu_x high-entropy alloy coatings on aluminum by laser cladding

Proposal of Evaluation Method for Crack Propagation Behaviors of Second-Generation Acrylic Adhesives under Mode I Static Loading

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Durability and flammability evaluation of SGA structural adhesive joints consisting of a thick adhesive layer for shipbuilding

Cited by 9 publications

References 6 publications

Experimental investigation of the effects of adhesive thickness on the fracture behavior of structural acrylic adhesive joints under various loading rates

Experimental investigation of the effects of adhesive thickness on the fracture behavior of structural acrylic adhesive joints under various loading rates

Microstructure, mechanical, and corrosion resistance properties of Al0.8CrFeCoNiCux high-entropy alloy coatings on aluminum by laser cladding

Proposal of Evaluation Method for Crack Propagation Behaviors of Second-Generation Acrylic Adhesives under Mode I Static Loading

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Microstructure, mechanical, and corrosion resistance properties of Al_0.8CrFeCoNiCu_x high-entropy alloy coatings on aluminum by laser cladding