Microstructure evolution and mechanical properties of Al-La alloys with varying La contents

He, Yedong; Liu, Jianhua; Qiu, Shengtao; Deng, Zhenqiang; Zhang, Jie; Shen, Yuh Chiang

doi:10.1016/j.msea.2017.06.023

Cited by 30 publications

(8 citation statements)

References 18 publications

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“…While many researches focused on the variation of microstructure evolution [13] and properties of the alloy [12,26] according to varying components, there has been little experimental verification of these microstructures in three dimension. For the Al − 35La alloy prepared by free solidification experiment, the 3D dendritic microstructure of Al 11 La 3 phase has been captured and analyzed based on the diffraction contrast tomography (DCT) technique and the lifted multicut algorithm.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, compared to traditional mechanical cross-sectioning methods, the DCT technique as well as the LMP segmentation algorithm is able to recover the microstructure losslessly. Therefore, it is our future work to study the 3D microstructures of other kinds of alloys as well as their relationship to mechanical properties [13].…”

Section: Resultsmentioning

confidence: 99%

“…Yang et al [12] has reported that the appropriate addition of La had an advantages in refining grain size, removing harmful impurity, improving tensile strength and elongation rate of aluminum alloys. Then, He et al [13] looked into the progress of microstructure evolution of Al − La alloys with varying La contents. They found that the Al 11 La 3 phase has an obvious influence on tensile strength, and La content has a greater effect on the plasticity of Al − La alloy.…”

Section: Introductionmentioning

confidence: 99%

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3D Microstructure Reconstruction of Al-La Microstructure using Diffraction Contrast Tomography and Lifted Multicut

Y¹,

Z²

2018

Preprint

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These authors contributed equally to this work.Abstract: It is important for researchers in material domain to reconstruct and visualize the microstructure of alloy, which helps discover morphologies and properties that can only be found in three dimensional and microscopic space. However, because of the limitation of state-of-the-art sensors, the internal microstructure of the material is not easy to obtain. In this paper, a novel automatic 3D reconstruction method is proposed using diffraction contrast tomography technology to capture the 3D microstructure of Al − La alloy. The pipeline of the proposed method starts from the imaging of Al − La alloy with the LabDCT technique from Carl Zeiss AG, which produces a sequence of 2D microstructure sections. Then, a segmentation algorithm based on superpixel and lifted multicut is proposed to extract the 2D microstructure in an image section. Finally, 2D segmentations are joined together to reconstruct and visulize the 3D microstructure. As a result, a novel morphology of Al − La alloy is recovered with both dendrite and lamellar morphologies. The proposed method has the advantage of the ability to losslessly recover the internal microstructure.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

3D Microstructure Reconstruction of Al-La Microstructure using Diffraction Contrast Tomography and Lifted Multicut

Y¹,

Z²

2018

Preprint

View full text Add to dashboard Cite

show abstract

“…While many researches focused on the variation of microstructure evolution [10] and properties of the alloy [9,23] according to varying components, there has been little experimental verification of these microstructures in three dimension. For the Al − 35La alloy prepared by free solidification experiment, the 3D dendritic microstructure of Al 11 La 3 phase has been captured and analyzed based on the diffraction contrast tomography (DCT) technique and the lifted multicut algorithm.…”

Section: Resultsmentioning

confidence: 99%

“…Yang et al [9] has reported that the appropriate addition of La had an advantages in refining grain size, removing harmful impurity, and improving tensile strength and elongation rate of aluminum alloys. Then, He et al [10] looked into the progress of microstructure evolution of Al − La alloys with varying La contents. They found that the Al 11 La 3 phase has an obvious influence on tensile strength, and La content has a greater effect on the plasticity of Al − La alloy.…”

Section: Introductionmentioning

confidence: 99%

Segmentation and reconstruction of DCT images based on lifted multicut

Su¹

2018

J Image Video Proc.

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In this paper, a novel automatic segmentation and reconstruction method is proposed for diffraction contrast tomography (DCT) technology. The pipeline of the proposed method starts from the imaging of Al − La alloy with the LabDCT technique from Carl Zeiss AG, which produces a sequence of 2D microstructure sections. Then, a segmentation algorithm based on superpixel and lifted multicut is proposed to extract the 2D microstructure in an image section. Finally, 2D segmentations are joined together to reconstruct and visualize the 3D microstructure. As a result, a novel morphology of Al − La alloy is recovered with both dendrite and lamellar morphologies. The proposed method has the advantage of the ability to losslessly recover the internal microstructure.

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Investigation structure and properties of wire from the alloy of AL-REM system obtained with the application of casting in the electromagnetic mold, combined rolling-extruding, and drawing

Sidelnikov

Voroshilov

Motkov

et al. 2021

Int J Adv Manuf Technol

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The paper presents the results of studies of the structure and properties of a wire with a diameter of 0.5 mm from an alloy of the Al-REM system with a rare-earth metal content of 7-9%. Wire obtained as a result of the implementation of the technology of its manufacture using the methods of casting into an electromagnetic mold (EMM), continuous extruding and drawing.The rheological properties of the metal of continuously cast round billets from the experimental alloy obtained using an electromagnetic mold are determined. The modeling and analytical assessment of the possibility of carrying out the process of combined rolling-extruding (CRE) of such billets in a closed boxtype roll groove of a continuous extruding unit are carried out. The features of metal shaping have been studied. The temperature-speed and technological parameters was found at which the CRE process can be carried out in a stable mode of operation. Data have been obtained for the forces acting on the die and rolls and the moments on the rolls during rolling-extruding.The results of experimental studies of the process of obtaining longish deformed semi-finished products from an experimental alloy on the laboratory unit CRE-200 and the pilot plant unit CRE-400 are presented. The structure of the metal has been studied; data on the ultimate tensile strength, yield strength, relative elongation, and electrical resistivity of hot-extruded rods and wires in cold-worked and annealed states have been obtained.It was found that the proposed processing modes make it possible to obtain by the method of combined rolling-extruding rods with a diameter of 9 mm in industrial conditions from longish billets with a diameter of 18 mm, cast by means of EMM. Wire in a cold-worked and annealed state with a diameter of 0.5 obtained by drawing from the rods with a diameter of 9 mm from an experimental alloy of the Al-REM system containing 7-9 rare earth metals with the required physical and mechanical properties.

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Microstructure evolution and mechanical properties of Al-La alloys with varying La contents

Cited by 30 publications

References 18 publications

3D Microstructure Reconstruction of Al-La Microstructure using Diffraction Contrast Tomography and Lifted Multicut

3D Microstructure Reconstruction of Al-La Microstructure using Diffraction Contrast Tomography and Lifted Multicut

Segmentation and reconstruction of DCT images based on lifted multicut

Investigation structure and properties of wire from the alloy of AL-REM system obtained with the application of casting in the electromagnetic mold, combined rolling-extruding, and drawing

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