Optimization of heat treatment process of Al–Mg–Si cast alloys with Zn additions by simulation and experimental investigations

Zhang, Mingshan; Wang, Junsheng; Han, Jiaqiang; Sui, Huaiming; Huang, Houbing; Jin, Ke; Qian, Feng

doi:10.1016/j.calphad.2019.101684

Cited by 10 publications

(5 citation statements)

References 39 publications

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“…During the laser scanning in L-PBF process, the partially remelting of the solidified part of the lower layer leads to the epitaxial growth to form columnar dendritic morphology. The microstructure shows stronger texture on the (Zhang et al, 2019) crystallographic plane than that on XY plane. Strip-shaped grains are arranged in parallel across the width of the melt channel, and there are some fine grains at the edge of the scanning track.…”

Section: Resultsmentioning

confidence: 96%

Phase field simulation of microstructure evolution and process optimization during homogenization of additively manufactured Inconel 718 alloy

Chen

Shi

et al. 2022

Front. Mater.

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An in-depth and integral understanding of the microstructural evolution during thermomechanical process (TMP) is of great significance to optimize the manufactural process for high-quality components via additive manufacturing. The solidified microstructure model of Inconel 718 alloy fabricated via laser powder bed fusion (L-PBF) is established by multiphase field model firstly. Furthermore, the microstructural evolution during homogenization process is simulated and optimized in this study. Phase field simulation results show that the concentration gradient of Nb along the radius of the cellular substructure decreases from the initial 1.217 wt% to 0.001 wt%, and 67% area fraction of the Laves phase dissolves at the homogenization time of 0.5 h, which have achieved the homogenization purpose. The experimental results show that the average grain size decreases from 9.4 μm to 5.9 μm at the homogenization time from 1.5 h (the standard AMS 5383) to 0.5 h, which resulted in the increase of yield strength and tensile strength of the aged alloy by 14% and 6%, respectively. This research can provide guidance and reference for the microstructural control as well as the TMP parameters design of the additive manufactured alloys.

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Section: Resultsmentioning

confidence: 96%

Phase field simulation of microstructure evolution and process optimization during homogenization of additively manufactured Inconel 718 alloy

Chen

Shi

et al. 2022

Front. Mater.

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“…However, after heat treatment, the average hardness of the TiN + H-deposition was the highest (192.2 HV): it increased by 86.9 HV, which reached the level of forgings. Zhang et al [26] also found that hardness was strongly affected by the size and density of precipitates. Compared with changes in the microstructures at each deposition, a large number of fine precipitates mainly contributed to the improved hardness, which was more important than grain refinement for hardness enhancement.…”

Section: Resultsmentioning

confidence: 99%

Al–Zn–Mg–Cu alloy with both high strength and high plasticity fabricated with wire arc additive manufacturing

Yuan

Ren

Chen

et al. 2022

Science and Technology of Welding and Joining

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To overcome the strength-ductility trade-off dilemma, the microstructure of Al-Zn-Mg-Cu alloy was controlled by adding TiN nanoparticles and heat treatment successively. Al-Zn-Mg-Cu alloy deposition with both high strength and high elongation was achieved. The tensile strength, elongation, and microhardness were increased by 122.3%, 173.9%, 86.1%, and 82.5%, respectively. The columnar grains were completely transformed into equiaxed grains with the addition of TiN particles and the grain size was reduced by 92.9%. The elongation increase was mainly because of the grain refinement, and the distribution fluctuation of the properties decreased. After T6 heat treatment, the elongation remained high because the grain size changed negligibly. Precipitation strengthening is the main mechanism for the improved tensile strength and hardness.

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“…Li et al [ 89 ] used Pandat software to study the equilibrium phase diagram of Al–Zn–Mg–Si alloy, and found that α-Al, Si, Mg 2 Si and MgZn 2 phases existed at 573 K, which was well verified by scanning electron microscopy (SEM) and differential scanning calorimetry (DSC), providing theoretical guidance for phase prediction. Zhang et al [ 90 ] investigated the effects of Zn addition and related heat treatment parameters on the mechanical properties of Al–Si–Mg alloys by using a combination of experimental and thermodynamic methods. In addition, the CALPHAD method was used to optimize the heat treatment process parameters.…”

Section: Heat Treatment Process Optimizationmentioning

confidence: 99%

“… Optimization of solution heat treatment parameters by combining thermodynamic calculation and experiment [ 90 ]. …”

Section: Figurementioning

confidence: 99%

Research Progress on Multi-Component Alloying and Heat Treatment of High Strength and Toughness Al–Si–Cu–Mg Cast Aluminum Alloys

et al. 2023

Self Cite

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Al–Si–Cu–Mg cast aluminum alloys have important applications in automobile lightweight due to their advantages such as high strength-to-weight ratio, good heat resistance and excellent casting performance. With the increasing demand for strength and toughness of automotive parts, the development of high strength and toughness Al–Si–Cu–Mg cast aluminum alloys is one of the effective measures to promote the application of cast aluminum alloys in the automotive industry. In this paper, the research progress of improving the strength and toughness of Al–Si–Cu–Mg cast aluminum alloys was described from the aspects of multi-component alloying and heat treatment based on the strengthening mechanism of Al–Si–Cu–Mg cast aluminum alloys. Finally, the development prospects of automotive lightweight Al–Si–Cu–Mg cast aluminum alloys is presented.

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Optimization of heat treatment process of Al–Mg–Si cast alloys with Zn additions by simulation and experimental investigations

Cited by 10 publications

References 39 publications

Phase field simulation of microstructure evolution and process optimization during homogenization of additively manufactured Inconel 718 alloy

Phase field simulation of microstructure evolution and process optimization during homogenization of additively manufactured Inconel 718 alloy

Al–Zn–Mg–Cu alloy with both high strength and high plasticity fabricated with wire arc additive manufacturing

Research Progress on Multi-Component Alloying and Heat Treatment of High Strength and Toughness Al–Si–Cu–Mg Cast Aluminum Alloys

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