Spark plasma sintering mechanisms of the Al-Zn-Mg-Cu alloys and TiB2/Al-Zn-Mg-Cu composites

Yang, Qingfeng; Cheng, Dawei; Zhang, F.G.; Shi, Qiwei; Chen, Z.; Wang, M.L.; Zhong, Shengyi; Wu, Yanqing; Wang, H.W.

doi:10.1016/j.matchar.2020.110825

Cited by 17 publications

(3 citation statements)

References 56 publications

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Section: Introductionmentioning

confidence: 99%

“…The vacuum condition can prevent or limit the oxidation and the fast heating rate along spark and plasma condition can restrict coarse growth of formation phases and crystal grains. [23][24][25][26][27] This study investigated anisotropic tensile behavior of CNT reinforced Al matrix composites fabricated by dry ball milling, SPS and post-SPS repeated hot rolling, which were related to microstructures including dispersibility of CNT and material defects such as voids and cracks in the composites. The microstructures were observed using a scanning electron microscope (SEM) and transmission electron microscope (TEM).…”

Section: Introductionmentioning

confidence: 99%

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Tensile strength and anisotropy of repeated hot-rolled carbon nanotube/aluminum matrix composites

Tsukamoto

2023

Journal of Composite Materials

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This study aims to strengthen carbon nanotube (CNT)/Al composites, which were fabricated by a combination of spark plasma sintering (SPS) and repeated hot rolling techniques. Dry ball milling was conducted to uniformly disperse CNT in Al powders. The microstructures of the CNT/Al composites including dispersibility of CNT were observed using a scanning electron microscope (SEM) and transmission electron microscope (TEM). Ball milling treatments promoted to reduce the number of CNT aggregations and increase C concentrations in the CNT aggregations in the composites. Anisotropic tensile behavior was also investigated, which demonstrated that the post-SPS repeated hot rolling can highly enhance the tensile strength as well as deformability of the composites.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tensile strength and anisotropy of repeated hot-rolled carbon nanotube/aluminum matrix composites

Tsukamoto

2023

Journal of Composite Materials

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“…Magnesium (Mg) and its alloys have recently been widely studied as biodegradable implants due to their unique biodegradability and good mechanical properties. Mg-Fe, Mg-Al, Mg-Ca, Mg-Zn, Mg-RE, and combining more than one alloying element such as Mg-Zn-Ca, Mg-Zn-Ca-Al, Mg-Gd-Zn-Zr are some typical alloys, which can be mentioned [3][4][5][6][7][8][9]. The elastic coe cient of Mg implants is close to that of natural bone, reducing stress due to the mismatch coe cient between natural bone and other metal implants.…”

Section: Introductionmentioning

confidence: 99%

Effect of Zn Content and SPS Process Parameters on the Microstructure and Hardness of Mg-Zn Alloys

Hashemi,

Hosseinpour,

Salehi

et al. 2023

Preprint

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This research investigated the microstructure and hardness of binary Mg-xZn (x=1, 3, 5) alloys produced by the spark plasma sintering process at different temperatures, times, and pressures. Taguchi quality function was used to model the process and obtain the optimal input parameters. Optical and scanning electron microscopes were used to analyze the microstructure and grain size of the alloys. Microstructural analyses revealed that the grain sizes directly increased by the Zn content. Meanwhile, the intermetallic phase of MgZn was formed in the alloys containing 3 and 5 wt. % Zn. Density and hardness measurements were employed for all alloys. The results also indicated that the highest hardness value was 92.5 HV for the alloy containing 1 wt. % Zn, while the highest relative density, 1.21, referred to the alloy containing 5 wt. % Zn, when the temperature, time, and applied pressure had the minimum values. Furthermore, by increasing temperature and pressure, the porosities were reduced. The grain size initially dropped and then ascended by merging the grains to form larger ones due to the enhanced diffusion kinetics.

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Microstructural evolution and mechanical properties of an ultrahigh-strength Al−Zn−Mg−Cu alloy via powder metallurgy and hot extrusion

Chen

Han

et al. 2021

J. Cent. South Univ.

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In this work, a novel ultrahigh-strength Al-10Zn-3.5Mg-1.5Cu alloy was fabricated by powder metallurgy followed by hot extrusion. Investigations on microstructural evolution and mechanical properties of the fabricated samples were carried out. The results show that the grain size of sintered samples matches with the powder particles after ball milling. The relative densities of sintered and hot extruded samples reach 99.1% and 100%, respectively. Owing to the comprehensive mechanism of grain refinement, aging and dispersion strengthening, the ultimate tensile strength, yield strength and elongation of the Al-10Zn-3.5Mg-1.5Cu alloy after hot extrusion and subsequent heat treatment achieve 810 MPa, 770 MPa and 8%, respectively.

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Spark plasma sintering mechanisms of the Al-Zn-Mg-Cu alloys and TiB2/Al-Zn-Mg-Cu composites

Cited by 17 publications

References 56 publications

Tensile strength and anisotropy of repeated hot-rolled carbon nanotube/aluminum matrix composites

Tensile strength and anisotropy of repeated hot-rolled carbon nanotube/aluminum matrix composites

Effect of Zn Content and SPS Process Parameters on the Microstructure and Hardness of Mg-Zn Alloys

Microstructural evolution and mechanical properties of an ultrahigh-strength Al−Zn−Mg−Cu alloy via powder metallurgy and hot extrusion

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