Texture control to reduce yield strength anisotropy in the third generation aluminum-copper-lithium alloy: Experiments and modeling

Mishra, Sumeet; Suresh, M.; More, A.M.; Bisht, Anuj; Nayan, Niraj; Suwas, Satyam

doi:10.1016/j.msea.2020.140047

Cited by 26 publications

(3 citation statements)

References 51 publications

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“…In addition, compared with the PAN and PA350 samples, the PA510 and PA400 samples had weaker grain orientation and smaller grain size (about 40 µm). In general, Al-Cu-Li had high anisotropy in strength, and its strong texture was easy to form in the hot forming process [30]. In this paper, as a complex strong rheological forming process, the composite spinning-extrusion forming had higher sensitivity to the forming window of Al-Cu-Li alloy.…”

Section: Mechanical Properties Of Cylindrical Parts Under Different S...mentioning

confidence: 82%

Effect of the Second Phases on Composite Spinning-Extrusion Forming and Mechanical Properties of Al–Cu–Li Alloy

et al. 2023

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The aim of this work is to investigate the effect of different second phases on the composite spinning-extrusion forming and mechanical properties of Al–Cu–Li alloy. With that purpose, four kinds of second phases blanks were controlled using preheating treatment, composite spinning-extrusion forming and mechanical properties test. Then, the correlation between the second phases and mechanical properties was further analyzed using electron backscattered diffraction and transmission electron microscopy. The results indicated that different second phases of Al–Cu–Li alloy can be regulated via reasonable preheating treatment. In addition, different second phases in the blank have various influences on composite spinning-extrusion forming, microstructure and mechanical properties of cylindrical parts. Dissolving the coarse second phases particles and precipitating the Al3Zr dispersoid in the blank can effectively improve the composite spinning-extrusion forming, inhibit the abnormal growth of recrystallized grains, and significantly enhance the mechanical properties of cylindrical parts with ribs. After regulation, the average grain size of the cylindrical parts is refined from about 90 μm to about 45 μm, and the average diameter of T1 phase is refined from 107 nm to 77 nm. In addition, the ultimate tensile strength, yield strength and elongation of cylindrical parts are increased from 555 MPa to 588 MPa, 530 MPa to 564 MPa, and 9.1% to 11%, respectively.

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Section: Mechanical Properties Of Cylindrical Parts Under Different S...mentioning

confidence: 82%

Effect of the Second Phases on Composite Spinning-Extrusion Forming and Mechanical Properties of Al–Cu–Li Alloy

et al. 2023

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“…The optical microstructure of the alloy in different states was analysed and presented in figure 2. Microstructure reveals that grain morphology of the alloy in SHT and SHT + aged states was mainly in the form of irregular pancakes type recrystallized grains depicting the typical Al-Cu-Li alloy [25].…”

Section: Microstructure Evolutionmentioning

confidence: 99%

Reciprocating wear behavior of multi-directionally forged and aged Al-Cu-Li alloy

Jagadeesh,

et al. 2024

Mater. Res. Express

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Al-Cu-Li alloys have drawn attention because of their decreased density, which is a result of the growing need for lightweight material systems in aerospace and aircraft applications. The Al-Cu-Li alloy, which has potential usage in aerospace and aviation structural components, is the subject of this study. The alloy was subjected to multi-directional forging (MDF) and post-MDF artificial aging. Reciprocating sliding wear tests were conducted to investigate the effects of these processes on wear properties under different load conditions. After MDF, a decrease in wear resistance was noticed, on the other hand, 12 pass MDF treated samples showed improved wear resistance upon aging treatment. Wear scars and counter ball surfaces were examined using scanning electron microscope (SEM) in order to understand the wear processes. The findings demonstrated that, at lower loads, adhesion and abrasion were the main wear processes; at greater loads, delamination, adhesion, and abrasion were clearly visible. Our study revealed that the MDF and its aging after processing have a substantial effect on the wear behavior of Al-Cu-Li alloy. This discovery has important implications for the development of lightweight materials that could be used in aerospace and aircraft applications.

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“…The PS is 110.2 MPa of the sheet stretched along TD, and the value of RD reaches 142.9 MPa under 440 • C-1 s −1 . According to the previous studies [24,25], to better characterize the evolution of PS along RD and TD, the PS anisotropy can be defined as the difference value (D-value) between the PS along the RD and TD divided by the minimum PS value (PSmin), as shown in Equation (1). Similar to the PS, the EL anisotropy can be defined by Equation (2).…”

Section: Flow Behavior and Mechanical Anisotropymentioning

confidence: 99%

Effect of Initial Orientation on the Anisotropy in Microstructure and Mechanical Properties of 2195 Al–Li Alloy Sheet during Hot Tensile Deformation

Ning

Liang

et al. 2023

Materials

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The 2195 Al–Li alloy, as one of the representative third-generation Al–Li alloys, has extensive applications in lightweight aerospace structures. In this paper, the anisotropy in mechanical properties and microstructure evolution of 2195 Al–Li alloy sheets were investigated under a strain rate of 0.01, 0.1, 1 s−1 and a temperature of 440 and 500 °C. Experimental results showed that the hot tensile properties of the 2195 Al–Li alloy sheet exhibited a strong dependence on loading directions. The peak stress (PS) and elongation (EL) along the rolling direction (RD) were larger than the transverse direction (TD). For the tests carried out at 440 °C-1 s−1, the PS values of the sheets stretched along the RD and TD are 142.9 MPa and 110.2 MPa, respectively. And, most of the PS anisotropy values are larger than 15%. The anisotropy in EL is less significant than in PS. All the differences are about 10%. Moreover, dimples in the samples stretched along RD were more and deeper than those along TD at 440 °C. The fracture morphology along RD and TD were similar, and both were cleavage fractures at 500 °C. Particularly, the fractions of high angle grain boundaries (HAGBs) along TD were all about 5% larger than those of RD. And, there were more small-sized continuous dynamic recrystallization (CDRX) grains inside the initial grains and discontinuous dynamic recrystallization (DDRX) grains featured with the local bulge of grain boundaries along TD. This was due to the smaller average Schmid factor and the vertical EL trend of the initial grains when the samples were stretched along TD. A model of grain evolution during the dynamic recrystallization (DRX) along RD and TD was proposed based on EBSD results. The Schmid factor and banded structure had a more prominent effect on the hot ductility of the 2195 Al–Li alloy compared with the degree of DRX, thus presenting a higher EL and better hot ductility along RD.

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Texture control to reduce yield strength anisotropy in the third generation aluminum-copper-lithium alloy: Experiments and modeling

Cited by 26 publications

References 51 publications

Effect of the Second Phases on Composite Spinning-Extrusion Forming and Mechanical Properties of Al–Cu–Li Alloy

Effect of the Second Phases on Composite Spinning-Extrusion Forming and Mechanical Properties of Al–Cu–Li Alloy

Reciprocating wear behavior of multi-directionally forged and aged Al-Cu-Li alloy

Effect of Initial Orientation on the Anisotropy in Microstructure and Mechanical Properties of 2195 Al–Li Alloy Sheet during Hot Tensile Deformation

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