Effects of non-isothermal annealing on microstructure and mechanical properties of severely deformed 2024 aluminum alloy

Moghanaki, Saeed Khani; Kazeminezhad, M.

doi:10.1016/s1003-6326(17)60001-3

Cited by 23 publications

(5 citation statements)

References 24 publications

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“…The more the addition of alloying elements, the better the mechanical properties. Judging from the composition data, the addition of Cu elements in this study is less than the research before [6], but the hardness in this study is higher than the previous study. This occurs because the current study uses gravity die casting and inert gas at the melting process, thus minimizing the presence of porosity defects [12].…”

Section: Resultscontrasting

confidence: 59%

“…While in a study of the effect of nonisothermal anneal heat treatment on a heavily deformed aluminium alloy 2024 (SPD), it was found that hardness and final shear strength increased with increasing temperature. Also the test results show that there are several high angle grain boundaries formed adjacent to the intermetallic particles such as Al7Cu2Fe [6]. Ultrafine pure aluminium grain is produced from cold roll, and defective aluminium which is annealed at 200 0 C for 1 hour.…”

Section: Introductionmentioning

confidence: 99%

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Analysis the Effect of Temperature and Holding Time of Full - Annealing Heat Treatment to Micro Structure, Mechanical Properties, and Electrical Conductivity of Aluminium Copper (Al-Cu) Alloy

Fellicia

Rochiem

Changraini

2019

MSF

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Good electrical conductivity properties of aluminium are the main reason this metal become an option as material of electrical devices. To improve the ductility and electrical conductivity properties, aluminium is combined with copper. The aim of this study is to analyze the effect of temperature and holding time of full-annealing heat treatment to the micro structure, hardness, and electrical conductivity of aluminium copper alloy (Al-Cu). In this research, pure aluminium with the addition of 4% copper (Cu) composition has been casted with gravity die casting mold made from ductile cast iron, and continued full-annealing heat treatment with 3 variations at temperature (2600C, 3500C, and 4400C), and 3 variations of holding time (2 hours, 3 hours, and 4 hours). It was found that the effect of higher temperature at the same holding time with the full-annealing heat treatment caused the grains of phase α become more regular and greater so that the hardness decreased and the electrical conductivity was increased.

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Section: Resultscontrasting

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Analysis the Effect of Temperature and Holding Time of Full - Annealing Heat Treatment to Micro Structure, Mechanical Properties, and Electrical Conductivity of Aluminium Copper (Al-Cu) Alloy

Fellicia

Rochiem

Changraini

2019

MSF

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“…The APT data indicates that these structures are clusters at grain boundaries and dislocations. The exothermic effect occurring in these HPT processed samples, which reaches its peak at about 240 o C, is attributable to recovery and the formation of precipitate [22,46]. At that stage, the hardness of the material will drastically decrease and therefore has no direct interest in this study.…”

Section: Temmentioning

confidence: 99%

Achieving ultra-high strength of Al-Cu-Li alloys by the combination of high pressure torsion and age-hardening

Dong

Gao

Chen

et al. 2022

Materials Science and Engineering: A

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“…The principle of these methods is based on cyclic rotations of the sample by 90 degrees, to change the strain axis [28,29,30,31,32,33]. The strain per pass varies in a range of 0.2 to 0.7 [31,32,33,34,35,36,37,38,39].…”

Section: Introductionmentioning

confidence: 99%

“…Several studies precisely analyzed the strain effect on microstructure evolution during IMF [32,37,38,39,48]. An ultrafine grain structure was found to form in IMF-proceeded Al-based alloys due to continuous dynamic recrystallization [14,36,38]. Microstructure inhomogeneity is the critical IMF problem, due to the inhomogeneity of the strain in different points of the sample at compression.…”

Section: Introductionmentioning

confidence: 99%

Effect of Multidirectional Forging on the Grain Structure and Mechanical Properties of the Al–Mg–Mn Alloy

et al. 2018

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The effect of isothermal multidirectional forging (IMF) on the microstructure evolution of a conventional Al–Mg-based alloy was studied in the strain range of 1.5 to 6.0, and in the temperature range of 200 to 500 °C. A mean grain size in the near-surface layer decreased with increasing cumulative strain after IMF at 400 °C and 500 °C; the grain structure was inhomogeneous, and consisted of coarse and fine recrystallized grains. There was no evidence of recrystallization when the micro-shear bands were observed after IMF at 200 and 300 °C. Thermomechanical treatment, including IMF followed by 50% cold rolling and annealing at 450 °C for 30 min, produced a homogeneous equiaxed grain structure with a mean grain size of 5 µm. As a result, the fine-grained sheets exhibited a yield strength and an elongation to failure 30% higher than that of the sheets processed with simple thermomechanical treatment. The IMF technique can be successfully used to produce fine-grained materials with improved mechanical properties.

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Effects of non-isothermal annealing on microstructure and mechanical properties of severely deformed 2024 aluminum alloy

Cited by 23 publications

References 24 publications

Analysis the Effect of Temperature and Holding Time of Full - Annealing Heat Treatment to Micro Structure, Mechanical Properties, and Electrical Conductivity of Aluminium Copper (Al-Cu) Alloy

Analysis the Effect of Temperature and Holding Time of Full - Annealing Heat Treatment to Micro Structure, Mechanical Properties, and Electrical Conductivity of Aluminium Copper (Al-Cu) Alloy

Achieving ultra-high strength of Al-Cu-Li alloys by the combination of high pressure torsion and age-hardening

Effect of Multidirectional Forging on the Grain Structure and Mechanical Properties of the Al–Mg–Mn Alloy

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