Applying high strain to the alloy cable results in more energy stored in defects (vacancies and dislocations). Therefore, during the heat treatment, increasing the deformation energy storage will lead to greater dislocation annihilation and improve the conductivity. The grain size of the alloy cable will change significantly after heat treatment.
Read MoreIn this paper, the isothermal thermal compression simulation test of 2024 aluminum alloy was carried out. The deformation temperature is 573-723 K, the strain rate is 0.01-10 s−1, and the deformation amount is 50%. The experimental results show that the change of flow stress is inversely proportional to the deformation temperature, but
Read More1. Introduction. The study of the energy balance in the process of plastic deformation of a metal, alloy, or polymer is an important challenge since it is just energy, especially the energy transition, that determines the thermodynamic conditions responsible for the current state of the material and its instantaneous changes, including the deformation
Read MoreThe effect of deformation energy storage on SRX were revealed based on the GND calculation. In the high lnZ region, sufficient deformation energy storage is achieved and SRX process is strongly driven. Continuous dynamic recrystallization during the transient severe deformation of aluminum alloy 7475. Acta Mater., 57 (1) (2009),
Read MoreThe hot deformation behaviors of the new 6063 aluminum alloy modified by rare earth Y and Al-Ti-B master alloy were studied through isothermal hot
Read MoreNickel aluminum bronze alloys with ultimate strength of 1148.3MPa, yield strength of 843.2MPa and elongation of 15.2% were prepared. The large amount of deformation energy storage, high-density defects and dispersed ultrafine precipitates by heavy hot rolling are identified to be important factors for generating the high-density
Read MoreAluminium alloy 6061-T6 (AA6061-T6) shows a promising potential for cryogenic structural applications. This alloy exhibits remarkable monotonic tensile properties at low temperatures. However, there is a limited number of studies on the cryogenic deformation behaviour. In this study, both monotonic and cyclic loading were conducted, and various
Read MoreThe isothermal compression tests of the 2219 Al alloy were conducted at the temperature and the strain rate ranges of 623–773 K and 0.01–10 s−1, respectively, and the deformed microstructures were
Read MoreTwinning is an important deformation mechanism in metals and alloys, especially in coarse-grained face-centred cubic (FCC) metals with low stacking fault energy and in nanocrystalline materials. In aluminium alloys, the formation of twins is usually considered impossible due to a relatively high stacking fault energy (SFE) [ 35 ].
Read MoreA range of values for pure aluminium and aluminium alloys are reported in the literature, from (Q_{rm m}=0.58-0.9,{hbox{eV}}). In alloys, the activation energy for vacancy migration can be strongly influenced by the formation of vacancy-solute clusters, which is an additional complicating factor (e.g. Reference 24). For warm deformed
Read MoreIt is commonly known that 7075-T6 is an ultra-high-strength aluminum alloy, which is widely used in aircraft industry. However, 7075-T6 aluminum alloy easily cracks during traditional stamping and has a larger springback due to its higher yield strength (more than 500 MPa) and low elastic modulus (71 GPa) [1, 2].Therefore, plastic
Read MoreThe plastic work-heat conversion coefficient is one key parameter for studying the work-heat conversion under dynamic deformation of materials. To explore this coefficient of 7075-T651 aluminum alloy under dynamic compression, dynamic compression experiments using the Hopkinson bar under four groups of strain rates were
Read MoreUFG metals and alloys by using infrared thermography [11–13]. The study of energy components during plastic deformation and stored energy is important for new materials, since it helps to identify deformation mechanisms. In our previous studies [12, 13], we investigated the temperature field evolution and the mechanisms of energy dissipation
Read MoreTherefore, the deformation temperature and deformation rate synergistically affect the hot deformation mechanism of aluminum alloy. Two different
Read MoreIt is found that the main softening mechanism of 7050 aluminum alloy deformation at lower deformation temperature (340 °C, 0.01 s-1) is dynamic recovery. However At the same time, the accumulation of a large number of dislocations also increases the deformation energy storage, which provides energy for static
Read MoreThere are few studies on the effects of hot rolling deformation and deformation passes on the microstructure and properties of aluminum alloy [ 7, 8 ].
Read MoreThe microstructure evolution of 7A85 aluminum alloy at the conditions of strain rate (0.001 − 1 s−1) and deformation temperature (250–450 °C) was studied by optical microscopy (OM) and electron back scattering diffraction (EBSD). Based on the K-M dislocation density model, a two-stage K-M dislocation density model of 7A85 aluminum
Read MoreThe thermal deformation behavior of as-forged Al–Zn–Mg-(Cu) aluminum alloy at strain rate 0.001–1 s −1, temperature 663–783 K and deformation degree 0–60% was studied by isothermal compression test, and an accurate strain-compensated Arrhenius constitutive equation was established.Based on the microstructure characteristics of
Read MoreWith the wide application potential of wrought aluminium alloy in aerospace, automobile and electronic products, high-quality aluminium bars prepared by the radial forging (RF) process have received extensive attention. Penetration performance refers to the depth of radial plastic deformation of forgings, which is the key factor in
Read More17 · The production of aluminum alloy multi-lumen tubes primarily involves hot bending formation, a process where controlling thermal deformation quality is difficult. Specifically, the inner cavity wall of the tube is prone to bending instability defects under the bending stress field. To address these challenges in the bending deformation of
Read MoreAluminum alloy possesses poor plastic deformation ability under quasi-static stamping (QS). Hence, the plastic deformation behavior and microstructure evolution of 5052 aluminum alloy in electromagnetic driven stamping (EMDS) and QS under different heat treatment conditions were investigated in this paper.
Read MoreHowever, the warpage of aluminum alloy strip appears after rolling due to the speed deviation between two work rolls . Many scholars have explored different rolling processes to obtain the aluminum alloy sheet with good shape and uniform deformation. Zhang et al. [8, 9] explored the aluminum alloy deformation behavior during snake
Read MoreThe effect of initial deformation stored energy, target temperatures and heating rates on the microstructure and texture as well as the hardness and conductivity
Read MoreAbstract 2219 Al alloy is an important material for manufacturing launch vehicles, and its grain structure has a substantial effect on the performance of storage tank transition rings. In this work, warm compression tests (100–350 °C) of 2219 Al alloy were carried out, a grain refinement model of warm deformation was established, and the
Read MoreZhang X, Jiang Z, Zhao S, Xie X, Xiao J, Liu X, Wu Z, Zhang Y. Analysis of Bending Deformation and Stress of 6063-T5 Aluminum Alloy Multi-Cavity Tube Filled with Liquid. Materials . 2024; 17(13):3230.
Read MoreThe isothermal compression tests of the 2219 Al alloy were conducted at the temperature and the strain rate ranges of 623–773 K and 0.01–10 s−1, respectively, and the deformed microstructures were observed. The flow curves of the 2219 Al alloy obtained show that flow stress decreases with the increase in temperature and/or the decrease in
Read MoreA range of values for pure aluminium and aluminium alloys are reported in the literature, from (Q_{rm m}=0.58-0.9,{hbox{eV}}). In alloys, the activation energy for vacancy migration
Read MoreIn this paper, the effects of different deformation on the microstructure and properties of 2024 aluminum alloy were systematically studied by means of optical
Read MoreAluminum alloy has the characteristics of good corrosion resistance and high strength, so aluminum alloy workpiece is widely used in the aerospace field. Milling is a common manufacturing process for aluminum alloy workpiece [1,2,3,4]. However, aluminum alloy is prone to deformation during milling, which seriously threatens
Read MoreAluminum alloy has high stacking fault energy, and CDRX mainly occurs in the thermal deformation process at higher temperatures. During the formation of
Read MoreThe thermal deformation activation energy of 2024 aluminum alloy is 201.62 kJ/mol. The experimental peak stress constitutive model is in good agreement with the calculated value. Based on the Prasad instability model and the dynamic material model, the hot working diagram of 2024 aluminum alloy is established to construct the true strain of 50%.
Read MoreThe energy minimum is not located right at position of 0.5a, but with a small shift at the position of [0.5a, 0.1c]. The structure at the saddle position forms a stacking fault in prismatic {1 1 ¯ 00} plane. Adding Al could alter the energy locally in γ-surface, but does not change the minimum energy path and position of stable stacking fault.
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