Evaluation of hardness and precipitation in Zn-modified Al2024 alloy after plastic deformation and heat treatments

Garay-Reyes, C.G.; Gonzalez-Rodelas, L.; Cuadros-Lugo, E.; Martínez‐Franco, Enrique; Aguilar-Santillan, Joaquin; Estrada-Guel, I.; Maldonado-Orozco, M. C.; Martínez-Sánchez, R.

doi:10.1016/j.jallcom.2017.02.111

Cited by 14 publications

(6 citation statements)

References 35 publications

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“…Figure 7 presents nanohardness results of virgin and TSC conditions of Glare™ laminate. One can notice that TSC treatment gave rise to a harder microstructure as compared to the pristine condition, thus confirming previous results provided in [22]. Figure 8 displays some results obtained in three-point flexural testing, where is possible to conclude that the elastic modulus (stiffness) and ultimate strength of Glare™ in TSC condition are substantially higher than the pristine hybrid laminate.…”

Section: Pih and Mxctsupporting

confidence: 83%

“…6a) and after (6b) 1,200 thermal shock cycles. In the former condition it is possible to observe evenly distributed rodlike precipitates or T phases (Al20Cu2Mn3) [21] in the grain interior, with no occurrence in the grain boundaries, whereas in the latter one needle like precipitates or S' phases (Al2CuMg) are also noted in both grain interior and boundaries, which the authors inferred to enhance Al-alloys´ hardness [22]. Figure 7 presents nanohardness results of virgin and TSC conditions of Glare™ laminate.…”

Section: Pih and Mxctmentioning

confidence: 98%

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Impact Behavior of Glare Hybrid Laminate Under Extreme Thermal Conditions

Goyo-Brito¹,

Vogler²,

Silva³

et al. 2018

Proceedings of the 4th Brazilian Conference on Composite Materials

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Artificial bodies intentionally placed into low orbit around the earth (LEO) are exposed to critical thermal and mechanical in-service conditions, e.g. severe thermal cycling and micrometeoroid impact. To better understand the response of Glare™-5 2/1 fiber-metal laminate under such conditions, pristine test coupons were subjected to low-energy ballistic impact (21 J) at the temperatures of-196 and 100 °C. Another set of test pieces went through the same experimental conditions, except that they were first submitted to 1,200 thermal shock cycles from-196 to 100 °C. Thermally conditioned specimens exhibited higher resistance to externally visible damage in both test temperatures. On the other hand, internal failure mechanisms characterized via microscopy and X-ray CT inspection techniques have shown that specimens submitted to cryogenic impact after repeated thermal cycling presented the best impact resistance, being age hardening of outer 2024-T3 Al-alloy sheets a possible enhancing factor; besides, residual thermal stresses in the core glass fiber-reinforced epoxy matrix, associated to the post-cure of the latter may have led to higher interlaminar strength.

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Section: Pih and Mxctsupporting

confidence: 83%

Section: Pih and Mxctmentioning

confidence: 98%

Impact Behavior of Glare Hybrid Laminate Under Extreme Thermal Conditions

Goyo-Brito¹,

Vogler²,

Silva³

et al. 2018

Proceedings of the 4th Brazilian Conference on Composite Materials

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“…At present, there is no literature report about the cold rolling process of sintered materials; thus, the cold rolling process of cast alloy was used as a reference to cold-roll the as-sintered 2024 aluminium alloy. 15,16 However, it is easy to produce work hardening effect during cold rolling, which seriously affects the rolling efficiency and easily leads to material cracking. 17 Therefore, the intermediate annealing is accompanied by the cold rolling process, and its main purpose is to eliminate the work hardening effect, so that the plastic deformation can continue.…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, the mechanical properties of the as‐sintered 2024 aluminium alloy can be improved by cold rolling. At present, there is no literature report about the cold rolling process of sintered materials; thus, the cold rolling process of cast alloy was used as a reference to cold‐roll the as‐sintered 2024 aluminium alloy 15,16 . However, it is easy to produce work hardening effect during cold rolling, which seriously affects the rolling efficiency and easily leads to material cracking 17 .…”

Section: Introductionmentioning

confidence: 99%

Edge crack forming mechanism and the countermeasures in as‐sintered 2024 aluminium alloy during cold rolling

Wang

Yang

Huang

et al. 2020

Fatigue Fract Eng Mat Struct

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In order to solve the problem of edge cracking of the as-sintered 2024 aluminium alloy during cold rolling, the initiation mechanisms of edge cracking were studied. The results indicate that the "herringbone" crack parallel to the rolling direction and the "zigzag" crack perpendicular to the rolling direction easily formed during cold rolling. The former mainly occurred during the early stage of cold rolling and was related to the poor plasticity of the as-sintered alloy and the stress state at the end of the rolled plate, whereas the latter appeared in a sample with a rolling reduction of more than 60%, mainly because the grains at the edge of the sample were subjected to threedirection shear stress, which results in cracking along the grain boundaries. However, both herringbone and zigzag cracks propagated along the grain boundary. Finally, the crack-free products were obtained by optimizing the cold rolling process.

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“…The Al-Cu-Mg alloys present excellent properties, such as tensile strength, excellent stability thermal and yield strength [1]. Nowadays, these alloys are amply used in aeronautic industry and they are considered for future applications where processing of these materials are highly important.…”

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confidence: 99%