Towards high mechanical performance Al–Cu–Mg–Fe–Ni alloy: influence of composition, solution treatment and aged process on microstructural evolution and mechanical properties

Yang, Zhou; Zhang, Meilin; Fan, Longyi; Bai, Jingyuan; Chen, Xiaolin; Jin, Zhou; Li, Zheng; Guan, Renguo

doi:10.1016/j.jmrt.2023.01.166

Cited by 8 publications

(3 citation statements)

References 42 publications

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“…The microhardness of the Al-4Ni alloys increased gradually with increased additions of vanadium. (6) The fracture of the Al-4Ni-0.4V alloy was composed of dimples and tear edges, demonstrating ductile fracture. Meanwhile, the fracture of the Al-4Ni-0.6V alloy was composed of dimples, tear edges, and cleavage planes, showing mixed ductile-brittle fracture.…”

Section: Discussionmentioning

confidence: 99%

“…With the development of automobiles towards high-power, high-energy utilization, and low pollution emissions, higher requirements have been put forward for the heat-resistant performance of cast aluminum alloys [1][2][3]. Conventional cast heat-resistant aluminum alloys, such as Al-Si-Mg systems [4,5] and Al-Cu-Mg systems [6,7], show sharp increases in their alloying element diffusion, and decreases in their solid solution strengthening at temperatures of 200 • C or above. The strengthening phases such as Al 2 Cu and Mg 2 Si coarsen significantly at high temperatures, resulting in a decreased pinning effect on dislocations and grain boundaries, while the aging metastable phases transform into a stable phase and no longer have a latticematching relationship with the matrix [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Vanadium Addition on Solidification Microstructure and Mechanical Properties of Al–4Ni Alloy

Chen,

et al. 2024

Materials

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The effects of vanadium addition on the solidification microstructure and mechanical properties of Al–4Ni alloy were investigated via thermodynamic computation, thermal analysis, microstructural observations, and mechanical properties testing. The results show that the nucleation temperature of primary α-Al increased with increased vanadium addition. A transition from columnar to equiaxed growth took place when adding vanadium to Al–4Ni alloys, and the average grain size of primary α-Al was reduced from 1105 μm to 252 μm. When the vanadium addition was 0.2 wt%, the eutectic nucleation temperature increased from 636.2 °C for the Al–4Ni alloy to 640.5 °C, and the eutectic solidification time decreased from 310 s to 282 s. The average diameter of the eutectic Al3Ni phases in the Al–4Ni–0.2V alloy reduced to 0.14 μm from 0.26 μm for the Al–4Ni alloy. As the vanadium additions exceeded 0.2 wt%, the eutectic nucleation temperature had no obvious change and the eutectic solidification time increased. The eutectic Al3Ni phases began to coarsen, and the number of lamellar eutectic boundaries increased. The mechanical properties of Al–4Ni alloys gradually increased with vanadium addition (0–0.4 wt%). The Al–4Ni–0.4V alloy obtained the maximum tensile strength and elongation values, which were 136.4 MPa and 23.5%, respectively. As the vanadium addition exceeded 0.4 wt%, the strength and elongation decreased, while the hardness continued to increase. Fracture in the Al–4Ni–0.4V alloy exhibited ductile fracture, while fracture in the Al–4Ni–0.6V alloy was composed of dimples, tear edges, and cleavage planes, demonstrating mixed ductile–brittle fracture. The cleavage planes were caused by the primary Al10V and coarse Al3Ni phases at the boundary of eutectic cells.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Vanadium Addition on Solidification Microstructure and Mechanical Properties of Al–4Ni Alloy

Chen,

et al. 2024

Materials

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“…The improved castability, for example, from low sensitivity to the hot cracking, is very important not only for casting but also for wrought alloys ingots [3][4][5]. Alloying of the Al-Cu-(Mg) alloys with Si, Ni, Fe, Mn, Ca leads to a decrease in hot cracking susceptibility, but an increased fraction of the brittle intermetallic compounds decreases the plasticity [4][5][6][7][8][9]. On the other hand, the search for novel alloying systems is the prospective aim.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Analysis of Microstructure and Hot Deformation Behavior of Al-Cu-Y-Mg-Cr-Zr-Ti-Fe-Si Alloy

Amer,

Glavatskikh,

Barkov

et al. 2023

Metals

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Low sensitivity to hot cracking is very important not only for casting but also for ingots of wrought alloys. Doping of Al-Cu-(Mg) alloys by eutectic forming elements provides an increasing resistance to hot cracking susceptibility, but it also leads to a decrease in plasticity. The quasi-binary alloys based on an Al-Cu-REM system with an atomic ratio of Cu/REM = 4 have a high solidus temperature, narrow solidification range and fine microstructure. The detailed investigation of microstructure, precipitation and hot deformation behavior, and mechanical properties of novel Al-Cu-Y-Mg-Cr-Zr-Ti-Fe-Si alloy was performed in this study. The fine Al8Cu4Y, needle-shaped Al11Cu2Y2Si2, compact primary (Al,Ti)84Cu6.4Y4.3Cr5.3 and Q (Al8Cu2Mg8Si6) phases were identified in the as-cast microstructure. Near-spherical coarse Al3(Zr,Y) and fine Al45Cr7 precipitates with a size of 60 nm and 10 nm were formed after 3 h of solution treatment at 580 °C. S′(Al2CuMg) precipitates with an average diameter of 140 nm, thickness of 6 nm and calculated volume fraction of 0.033 strengthened 36 HV during aging at 210 °C for 3 h. Three-dimensional hot processing maps demonstrated an excellent and stable deformation behavior at 440–540 °C and strain rates of 0.01–10 s−1. The rolled sheets had a good combination of yield strength (313 MPa) and plasticity (10.8%) in the recrystallized at 580 °C, with water quenched and aged at 210 °C for a 3 h state. The main calculated effect in the yield strength was contributed by Al45Cr7 precipitates.

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Thermodynamic description of the Al–Ag–Zr system and discovery of the high-strength ternary phase Al1.84Ag0.16Zr

et al. 2023

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Towards high mechanical performance Al–Cu–Mg–Fe–Ni alloy: influence of composition, solution treatment and aged process on microstructural evolution and mechanical properties

Cited by 8 publications

References 42 publications

Effect of Vanadium Addition on Solidification Microstructure and Mechanical Properties of Al–4Ni Alloy

Effect of Vanadium Addition on Solidification Microstructure and Mechanical Properties of Al–4Ni Alloy

Comprehensive Analysis of Microstructure and Hot Deformation Behavior of Al-Cu-Y-Mg-Cr-Zr-Ti-Fe-Si Alloy

Thermodynamic description of the Al–Ag–Zr system and discovery of the high-strength ternary phase Al1.84Ag0.16Zr

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