Fracture Toughness of Explosively Welded Al/Ti Layered Material in Cryogenic Conditions

Boroński, Dariusz; Kotyk, Maciej; Maćkowiak, P.

doi:10.1016/j.prostr.2016.06.468

Cited by 10 publications

(4 citation statements)

References 12 publications

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“…The fracture toughness tests of base materials and plater in ambient and cryogenic conditions were performed using CT type specimens. The testing methodology used in cryogenic conditions and the initial results of fracture toughness verification tests for Al-Ti laminate were presented in conference proceedings [39].…”

Section: Tempmentioning

confidence: 99%

Investigation of the Fracture Process of Explosively Welded AA2519–AA1050–Ti6Al4V Layered Material

et al. 2020

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The study presents an analysis of the cracking process of explosive welded layered material AA2519–AA1050–Ti6Al4V (Al–Ti laminate) at ambient (293 K) and reduced (223 and 77 K) temperatures. Fracture toughness tests were conducted for specimens made of base materials and Al–Ti laminate. As a result of loading, delamination cracking occurred in the bonding layer of specimens made from Al–Ti laminate. To define the crack mechanisms that occur at the tested temperatures, a fracture analysis was made using a scanning electron microscope. Moreover, acoustic emission (AE) signals were recorded while loading. AE signals were segregated to link their groups with respective cracking process mechanisms. Numerical models of the tested specimens were developed, taking into account the complexity of the laminate structure and the ambiguity of the cracking process. A load simulation using the finite element method FEM allowed calculating stress distributions in the local area in the crack tip of the Al–Ti laminate specimens, which enabled the explanation of significant material cracking process development aspects. Results analysis showed an influence of interlayer delamination crack growth on the process of the Al–Ti laminate specimen cracking and the level of KQ characteristics at different temperatures.

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Section: Tempmentioning

confidence: 99%

Investigation of the Fracture Process of Explosively Welded AA2519–AA1050–Ti6Al4V Layered Material

et al. 2020

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“…Recently AA2519 has become particularly interesting due to the emergence of a completely new explosion-welded Al-Ti material in which AA2519 aluminum alloy is one of the constituent materials. Consequently, the existence of such a composite has focused the attention of researchers who study its mechanical properties, including static properties, fatigue life and fracture toughness [5][6][7][8]. A completely new application provokes research on this alloy in a new context.…”

Section: Introductionmentioning

confidence: 99%

“…In conclusion, it stated that the described conditions cause improvement in the material's mechanical properties. Our research team also performed tests involving determining the basic mechanical properties for AA2519 under ambient (293 K) and cryogenic conditions (77 K), which are described in the works of [5][6][7][8][18][19][20]. In this article, however, apart from mechanical characteristics describing the material fracture toughness, there are also differences in the specimen fracture appearance obtained for both temperature conditions.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Cryogenic Conditions on the Process of AA2519 Aluminum Alloy Cracking

2020

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This study presents the results of tests involving determining quantities used to describe fracture toughness of a heat-treated AA2519 aluminum alloy applied in, among other things, constructing American military amphibians. These quantities were determined using the J–R curve method for two temperature values, 293 K and 77 K. The low temperature was provided by putting the tested specimen into a liquid nitrogen bath and keeping it there throughout the experiment. Based on the tests results, cryogenic conditions cause an increase in the maximum experimental value of the J–JQ integral, from 66.3 to 87.3 kJ/m2 Moreover, an analysis of the fatigue fracture microstructure revealed differences between specimens tested in ambient temperature and those tested in cryogenic temperature.

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“…The quality of the surface is also of great importance for the surface preparation for various types of connections, for example adhesive ones [5][6] as well as for preparation of various types of specimens, e.g. for destructive tests [7]. Studies available in the professional literature concerning tests on surfaces obtained using various types of lasers demonstrate that the accuracy of the cut depends mainly on the roughness.…”

Section: Introductionmentioning

confidence: 99%

The Analysis of Fiber and CO₂ Laser Cutting Accuracy

Sołtysiak

Wasilewski²,

Sołtysiak

et al. 2019

MATEC Web Conf.

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The aim of the conducted research was to compare the functional properties and the cutting accuracy of items produced using Fiber lasers in comparison with CO2 lasers. The object of 6 mm thick sheet plates made of S235JR steel cut with the two different laser types were analyzed. The tests covered dimensional accuracy (in accordance with the PN EN 22768-fH standard) and the surface after cutting (in accordance with the PN-EN ISO 9013: 2017-04). The results of the analysis have demonstrated that for the same welding linear energy, more accurate cutting surface is obtained using Fiber laser cutting.

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Fracture Toughness of Explosively Welded Al/Ti Layered Material in Cryogenic Conditions

Cited by 10 publications

References 12 publications

Investigation of the Fracture Process of Explosively Welded AA2519–AA1050–Ti6Al4V Layered Material

Investigation of the Fracture Process of Explosively Welded AA2519–AA1050–Ti6Al4V Layered Material

The Influence of Cryogenic Conditions on the Process of AA2519 Aluminum Alloy Cracking

The Analysis of Fiber and CO₂ Laser Cutting Accuracy

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Fracture Toughness of Explosively Welded Al/Ti Layered Material in Cryogenic Conditions

Cited by 10 publications

References 12 publications

Investigation of the Fracture Process of Explosively Welded AA2519–AA1050–Ti6Al4V Layered Material

Investigation of the Fracture Process of Explosively Welded AA2519–AA1050–Ti6Al4V Layered Material

The Influence of Cryogenic Conditions on the Process of AA2519 Aluminum Alloy Cracking

The Analysis of Fiber and CO2 Laser Cutting Accuracy

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The Analysis of Fiber and CO₂ Laser Cutting Accuracy