Microstructures and Properties Evolution of Al-Cu-Mn Alloy with Addition of Vanadium

Meng, Fanbin; Wang, Zhi; Zhao, Yuliang; Zhang, Datong; Zhang, Weiwen

doi:10.3390/met7010010

Cited by 15 publications

(4 citation statements)

References 32 publications

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“…Al-Cu alloy is an important series of aluminum alloys, because of its excellent properties, such as high specific strength, etc. 2xxx series aluminum alloys with copper has been widely used in many applications such as aerospace and automotive industries [1][2][3][4][5][6][7]. Due to low weight, high strength and excellent machinability, Al-Cu alloys are important candidates for steel substitution in some applications in the aerospace and automotive industries [8].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Novel Quasibinary Al-Cu-Yb and Al-Cu-Gd Alloys

Амер

Barkov

Поздняков

2021

Metals

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Microstructure of Al–Cu–Yb and Al-Cu-Gd alloys at casting, hot-rolled -cold-rolled and annealed state were observed; the effect of annealing on the microstructure was studied, as were the mechanical properties and forming properties of the alloys, and the mechanism of action was explored. Analysis of the solidification process showed that the primary Al solidification is followed by the eutectic reaction. The second Al8Cu4Yb and Al8Cu4Gd phases play an important role as recrystallization inhibitor. The Al3Yb or (Al, Cu)17Yb2 phase inclusions are present in the Al-Cu-Yb alloy at the boundary between the eutectic and aluminum dendrites. The recrystallization starting temperature of the alloys is in the range of 250–350 °C after rolling with previous quenching at 590 and 605 °C for Al-Cu-Yb and Al-Cu-Gd, respectively. The hardness and tensile properties of Al-Cu-Yb and Al-Cu-Gd as-rolled alloys are reduced by increasing the annealing temperature and time. The as-rolled alloys have high mechanical properties: YS = 303 MPa, UTS = 327 MPa and El. = 3.2% for Al-Cu-Yb alloy, while YS = 290 MPa, UTS = 315 MPa and El. = 2.1% for Al-Cu-Gd alloy.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Novel Quasibinary Al-Cu-Yb and Al-Cu-Gd Alloys

Амер

Barkov

Поздняков

2021

Metals

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“…The EDS analysis for points 1, 2, and 3 were expressed in Table 3. Point 1 is taken as the θ (Al2Cu) phase, which is located at the grain boundary; point 2 may be the mixed precipitated phase of Al3(Ti, Zr, V), which is located within the grain [15]; and point 3 is a dispersed phase distributed within the grain, and it should be Al12CuMn2 according to the atomic ratio and reference [16]. The microstructures of the Al-Cu-Mn-Zr-V alloy after CA and AEP treatment are shown in Figure 5.…”

Section: Microstructure Analysismentioning

confidence: 99%

Effect of Electro-Pulse on Microstructure of Al-Cu-Mn-Zr-V Alloy during Aging Treatment and Mechanism Analysis

Shi,

Yu,

Gao

et al. 2024

Metals

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The effects of electro-pulse on microstructure and mechanical properties of Al-Cu-Mn-Zr-V alloy were investigated, and the ageing mechanism was analyzed. As the current density increases, the size and quantity of precipitates gradually transit from continuous aggregation to dispersion at grain boundaries, and the mechanical properties are improved. When the current density is 15 A·mm−2, the precipitates are smallest and the mechanical properties are best. The tensile strength is 443.5 MPa and the elongation is 8.1%, which are 51.7% and 42.1% higher than those of conventional ageing treatment, respectively. Once the current density exceeds 15 A·mm−2, the precipitates will increase again and gather at grain boundaries, and the mechanical properties also decrease. An additional electrical free energy arising from an electro-pulse provides thermodynamic and kinetic conditions for the ageing precipitation of second phases. The electro-pulse can enhance the ageing diffusion coefficient, being improved by 34 times for 15 A·mm−2. The electro-pulse improves the nucleation rate and decreases the critical nucleation radii of second phases. However, it also accelerates the grain growth, making the second phases become coarse. An electro-pulse with a current density of 15 A·mm−2 can rapidly nucleate the second phase at 463 K while the precipitates are relatively small after growth.

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“…Among those advantages, RE elements can effectively refine the grain structure of the alloy, make the strength and hardness of the alloy increase significantly, and increase the fracture toughness thereof. At the same time, the distribution of segregation phases can be changed, and the stress concentration and crack initiation can be reduced [10][11][12]. More importantly, because of its active chemical properties, adding a certain amount of rare earth elements can reduce the amount of hydrogen gas and adsorb other impurities, purify the alloy in melt form, slag and shrinkage defect counts are reduced, the microstructural organization becomes more compact, and the tendency to hot cracking is also reduced.…”

Section: Open Accessmentioning

confidence: 99%

Effect of Micro-scale Y Addition on the Fracture Properties of Al–Cu–Mn Alloy

Guo¹,

Zhang²,

Ding³

et al. 2018

Chin. J. Mech. Eng.

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Rare earth (RE) elements have positive effects on Al alloy, while most research is focused on microstructure and mechanical properties. As important application indices, toughness and plasticity are properties that are sensitive to alloy fracture characteristics, and few research studies have characterized the fracture properties of Al-Cu-Mn alloy on RE elements. The effect of different contents of Y on the fracture properties of Al-Cu-Mn alloy is investigated. T6 heat treatment (solid solution and artificial aging treatment), optical microscope (OM), scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) methods are applied to the alloy. Results showed that when Y element is present at 0.1%, the section of the as-cast alloy has smaller sized dimples and the fracture mode presents ductile features. Slight changes in hardness are also observed and maintained at about 60 HV. With increasing content of the RE element Y from 0.1 to 0.5%, the θ phase and Cu atoms in the matrix were reduced and most stopped at Grain boundaries (GBs). Micro-segregation and an enriched zone of Y near the GBs gradually increased. At the same time, the inter-metallic compound AlCuY is aggregated at grain junctions causing deterioration of the micro-structure and fracture properties of the alloy. After T6 treatment, the flatness of the fracture surface was lower than that of all the ascast alloy showing lots of dimples and teared edges with a significant increase in hardness. When Y content was 0.1%, the strength and hardness of the alloy increased due to refinement of the grain strengthening effect. The content of Y elements segregated in the inter-dendritic zone and GBs is reduced. Plasticity and deformation compatibility also improved, making cracks difficult to form and merge with each other along adjacent grain junctions and providing an increased potential for ductile fracture. This paper proposes the addition of RE Y as an effective and prospective strategy to improve the fracture properties of the Al-Cu-Mn alloy and provide a meaningful reference in terms of improving overall performance. which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Microstructures and Properties Evolution of Al-Cu-Mn Alloy with Addition of Vanadium

Cited by 15 publications

References 32 publications

Microstructure and Mechanical Properties of Novel Quasibinary Al-Cu-Yb and Al-Cu-Gd Alloys

Microstructure and Mechanical Properties of Novel Quasibinary Al-Cu-Yb and Al-Cu-Gd Alloys

Effect of Electro-Pulse on Microstructure of Al-Cu-Mn-Zr-V Alloy during Aging Treatment and Mechanism Analysis

Effect of Micro-scale Y Addition on the Fracture Properties of Al–Cu–Mn Alloy

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