Improving Elevated-Temperature Strength of an Al–Mn–Si Alloy by Strain-Induced Precipitation

Zhang, Yangyang; Jin, Wei; Hao, Xuanzhang; Qiu, Feng; Zhao, Qinglong

doi:10.3390/met8060446

Cited by 5 publications

(6 citation statements)

References 23 publications

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“…The largest precipitate size was 55.2 µm, which is a reasonable value compared with the experimental observations. Figure 8 shows the Mn and Fe distribution of the region where the corresponding phase is indexed as Al 6 Mn. An increase in the Fe concentration is evident moving from the bottom-left corner to top-right according to the shift of the α-Al solidification front.…”

Section: Resultsmentioning

confidence: 99%

“…Small changes in the concentrations of alloying elements or heat treatment conditions can readily alter the mechanical properties and product quality by modifying the microstructure. For example, Mn is alloyed in Al to enhance strength, formability, and corrosion resistance [4][5][6]. However, undesired formation of large, faceted Mn-containing precipitates in high-Mn content alloys can diminish the desired properties.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, most studies on the precipitation of Al alloys were carried out in the hypoeutectic region, where the precipitate forms as a secondary phase in the Al matrix [4][5][6]18]. In this study, microstructural evolution during solidification of a hypereutectic Al-Mn-Fe-Si alloy was studied with regard to the morphology and chemistry of the precipitates using the phase-field approach with experimental aid.…”

Section: Introductionmentioning

confidence: 99%

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Solidification and Precipitation Microstructure Simulation of a Hypereutectic Al–Mn–Fe–Si Alloy in Semi-Quantitative Phase-Field Modeling with Experimental Aid

Park

Kang

et al. 2020

Metals

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In this study, microstructural evolution during solidification of a hypereutectic Al–Mn–Fe–Si alloy was investigated using semi-quantitative two-/three-dimensional phase-field modeling. The formation of facetted Al6Mn precipitates and the temperature evolution during solidification were simulated and experimentally validated. The temperature evolution obtained from the phase-field simulation, which was balanced between extracted heat and latent heat release, was compared to the thermal profile of the specimen measured during casting to validate the semi-quantitative phase-field simulation. The casting microstructure, grain morphology, and solute distribution of the specimen were analyzed using electron backscatter diffraction and energy-dispersive spectroscopy and compared with the simulated microstructure. The simulation results identified the different Fe to Mn ratios in Al6(Mnx,Fe1−x) precipitates that formed during different solidification stages and were confirmed by energy-dispersive spectroscopy. The precipitates formed in the late solidification stage were more enriched with Fe than the primary precipitate due to solute segregation in the interdendritic channel. The semi-quantitative model facilitated a direct comparison between the simulation and experimental observations.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solidification and Precipitation Microstructure Simulation of a Hypereutectic Al–Mn–Fe–Si Alloy in Semi-Quantitative Phase-Field Modeling with Experimental Aid

Park

Kang

et al. 2020

Metals

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“…In addition, hot rolling or extrusion can also eliminate casting defects such as slag inclusion and porosity to further improve material properties [22e25]. Zhang et al [26] found that prerolling at room temperature significantly promoted nucleation of nanosized dispersoids and increased the number density of dispersoids in AleMneSi alloys. However, deformation at room temperature increased the risk of cracking, which increases the difficulty of manufacturing [27].…”

Section: Introductionmentioning

confidence: 99%

Improving the elevated-temperature mechanical properties of AA3004 hot-rolled sheets by microalloying with Mo and optimizing the process route

Elgallad²,

Chen³

et al. 2022

Journal of Materials Research and Technology

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“…The outstanding comprehensive properties of aluminum alloys make it a promising material in promoting lightweighting of automobiles [1][2][3][4]. However, high-strength aluminum alloys have poor ductility at room temperature, and in the traditional cold stamping process, aluminum alloys are prone to problems such as springback, cracking, and high forming resistance [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Contact Heating of Aluminum Alloy Sheets in Hot Stamping Process

Geng

Wang

et al. 2019

Metals

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Application of the hot stamping process on heat-treatable aluminum alloys effectively solves the problems of large springback and poor ductility during forming at room temperature, which expands the range of applications of aluminum alloys in the transportation industry. Sheet heating plays an important role in the hot stamping process, and increasing the heating rate can improve the hot stamping efficiency to some extent. In this paper, the feasibility of applying contact heating techniques with higher heating rates in the hot stamping process was studied. A contact heating device was designed, and the temperature distribution of the device contact surface was observed. Furthermore, the heating characteristics of 7075 aluminum alloy sheets during the contact heating process were explored by experiments and finite element simulation. Finally, the rapid solution treatment of aluminum alloy was carried out with a contact heating device, which was compared with the furnace heating solution treatment. The experimental and simulation results indicate that the device contact surface has a relatively uniform temperature distribution, and the aluminum alloy sheets can be heated to close to the set temperature in 15 s using contact heating techniques. Meanwhile, the rapid solution treatment of aluminum alloy sheets can be achieved within 15–20 s by contact heating techniques, obtaining superior mechanical properties. This suggests that the contact heating process can be used for rapid heating and rapid solution treatment of aluminum alloy sheets in hot stamping process.

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Improving Elevated-Temperature Strength of an Al–Mn–Si Alloy by Strain-Induced Precipitation

Cited by 5 publications

References 23 publications

Solidification and Precipitation Microstructure Simulation of a Hypereutectic Al–Mn–Fe–Si Alloy in Semi-Quantitative Phase-Field Modeling with Experimental Aid

Solidification and Precipitation Microstructure Simulation of a Hypereutectic Al–Mn–Fe–Si Alloy in Semi-Quantitative Phase-Field Modeling with Experimental Aid

Improving the elevated-temperature mechanical properties of AA3004 hot-rolled sheets by microalloying with Mo and optimizing the process route

Investigation on Contact Heating of Aluminum Alloy Sheets in Hot Stamping Process

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