Effects of changes in test temperature on fatigue crack propagation of Al6090/SiCp-Al 6013 laminated metal composites

Hassan, Hala A.; Lewandowski, John J.; El-Latif, M. H. Abd

doi:10.1007/s11661-006-0209-5

Cited by 10 publications

(12 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The general processing details of these laminates have been summarised elsewhere. 24,25 Figure 1 shows the laminates tested in the present work, and Table 1 summarises the average layer thickness for each laminate. The complete laminate cross-sections are not shown in Fig.…”

Section: Experimental Materialsmentioning

confidence: 99%

Effect of mixed mode I/II on fracture behaviour of laminated metal matrix composites

Hassan

2011

Materials Science and Technology

View full text Add to dashboard Cite

The effects of mixed mode loading (I/II) on the fracture toughness and fracture behaviour of both 6090/SiC/20p-6013 diffusion bonded laminates and 2080/SiC/20p-2080 adhesive bonded laminates tested in the crack arrester orientation were investigated. The effects of layer thickness and volume fraction ratio on the fracture behaviour under the mixed mode were also studied. The fracture behaviour under mode I/II of available similar discontinuously reinforced aluminium (DRA) materials was additionally compared to that of the laminates. The fracture behaviour of laminates under mode I/II was dependent on the volume fraction ratio and generally different from that of the monolithic and DRA. The increase in the fracture toughness of DRA by lamination with ductile layers under mode I changes somewhat under increasing load mixity, for 75/25 and 50/50 diffusion bonded laminate and 60/40 adhesive bonded laminate ABL. This results from extensive interfacial separation and delamination between the layers.

show abstract

Section: Experimental Materialsmentioning

confidence: 99%

Effect of mixed mode I/II on fracture behaviour of laminated metal matrix composites

Hassan

2011

Materials Science and Technology

View full text Add to dashboard Cite

show abstract

“…Laminated metal composites can dramatically improve many properties, including toughness, fatigue behavior, impact behavior, wear, corrosion, and damping capacity; or provide enhanced formability or ductility. [7][8][9][10][11][12][13][14] From a mechanical viewpoint, optimizing the combination of strength, toughness, and interface bonding is the basis for lamination.…”

Section: Introductionmentioning

confidence: 99%

Interface Effects on the Fracture Mechanism of a High-Toughness Aluminum-Composite Laminate

Cepeda-Jiménez¹,

Pozuelo

García-Infanta³

et al. 2008

Metall Mater Trans A

View full text Add to dashboard Cite

The microstructure and the mechanical properties of a multilayer composite laminate based on aluminum 7075 and 2024 alloys produced by hot roll bonding were examined. The composite laminate has been tested at room temperature under Charpy-impact tests, three-point bend tests, and shear tests on the interfaces. The toughness of the post-rolling tempered and T6-treated composite laminate, measured by impact-absorbed energy in the crack-arrester orientation, was more than 20 times higher than that of the monolithic Al 7075 alloy and 7 times higher than that of Al 2024 alloy. The outstanding toughness increase of the composite laminate in the post-rolling tempered and T6-treated condition is mainly due to the mechanism of ''interface predelamination.'' By this fracture mechanism, the interfaces are debonded before the main crack reaches them, warranting delamination in all interfaces. Therefore, delamination and crack renucleation in every layer are responsible for the improvement in toughness.

show abstract

“…The fatigue crack growth characteristics of similar laminated materials are summarized elsewhere. [28][29][30][31] …”

Section: Introductionmentioning

confidence: 99%

Interface Effects on the Quasi-Static and Impact Toughness of Discontinuously Reinforced Aluminum Laminates

Osman

Hassan

Lewandowski

2008

Metall Mater Trans A

Self Cite

View full text Add to dashboard Cite

Trilayer laminates consisting of two layers of aluminum alloy 7093 surrounding one layer of 7093/SiC/15 p were produced via two roll-bonding techniques as well as by adhesive bonding. The effects of systematic changes in interface characteristics (i.e., weak bond via roll bonding with a thin ductile interlayer material, stronger bond via roll bonding without a thin ductile interlayer, and strongest bond via adhesive bonding with a semibrittle material) on the subsequent laminate toughness was studied. The fracture resistance of the laminates and the constituent materials was examined via instrumented Charpy notched impact testing in the crack-arrester orientation as well as by fracture-toughness testing of bend bars tested in the crack-divider and the crack-arrester orientations. The notched impact resistance of the trilayer crack-arrester laminates was found to be greater than both monolithic 7093/SiC/15 p and 7093 samples of similar global thickness. The laminated structure promoted crack arrest, deflection, and large-scale deformation of the unreinforced layers, producing R-curve behavior. The tendency for interface delamination was predicted and confirmed based on recent mechanics-based analyses. The trilayer laminate structures tested in the crack-divider orientation exhibited a greater R-curve than either of the 7093/SiC/15 p or 7093 samples tested at similar global thickness. Both types of roll-bonded laminates (i.e., stronger interface and weak interface containing a thin metal interlayer) exhibited a greater enhancement in Charpy impact toughness and mode I fracture toughness than did the adhesively bonded (i.e., semibrittle interface) laminates. These relative improvements in toughness were rationalized by estimating the contributions to energy absorption by the delamination and crack bridging in these systems and by the effects of the interface type on these processes. These results are generally relevant to the performance of these materials under impact and under certain blast loading and penetration situations.

show abstract

Effects of changes in test temperature on fatigue crack propagation of Al6090/SiCp-Al 6013 laminated metal composites

Cited by 10 publications

References 28 publications

Effect of mixed mode I/II on fracture behaviour of laminated metal matrix composites

Effect of mixed mode I/II on fracture behaviour of laminated metal matrix composites

Interface Effects on the Fracture Mechanism of a High-Toughness Aluminum-Composite Laminate

Interface Effects on the Quasi-Static and Impact Toughness of Discontinuously Reinforced Aluminum Laminates

Contact Info

Product

Resources

About