Preparation, microstructures and mechanical properties of in-situ (TiB2 + ZrB2)/AlSi9Cu3 composites

Zhang, S.-L.; Shi, Xiaodong; Zhao, Yutao; Zhang, B.-R.; Liang, Z.-P.; Yin, Houshang; Dou, Bai-Tao; Zhang, Q.; Wang, C.-X.

doi:10.1016/j.jallcom.2016.02.243

Cited by 35 publications

(11 citation statements)

References 30 publications

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“…The yield strength and tensile strength of TiB 2 /Al-24.5%Si composites are increased by 244% and 229% compared with the aluminum alloy matrix. Zhang [35] prepared in situ (TiB 2 + ZrB 2 )/AlSi9Cu3 composites by mixing K 2 TiF 6 , K 2 ZrF 6 and KBF 4 through reaction. The results show that the size of TiB 2 and ZrB 2 is about 20-100 nm, and the morphology is cubic columns and hexagonal columns respectively.…”

Section: Introductionmentioning

confidence: 99%

Effect of holding time and Ti/B molar ratio on microstructure and mechanical properties of in-situ TiB₂/Al composites fabricated by mixed salt reaction

Xie¹,

Cao²

2023

Mater. Res. Express

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In this study, in-situ TiB 2 /Al composites is fabricated by K 2 TiF 6 and KBF 4systems. The effects of process parameters on the size, distribution and morphologyof in-situ TiB 2 particles, as well as the microstructure and mechanical properties of thecomposite is analyzed. When the mixed salts is added at 750 °C, TiB 2 particles areshort rods. When the temperature is higher than 825 °C, TiB 2 particles are cubiccolumns and hexagonal columns. When the reaction temperature is 825 °C, the grainrefinement of the composite is most obviously. When the holding time is 80 min, TiB 2particles are uniformly distributed in the matrix and the size is less than 2 μm. Theultimate tensile strength, yield strength and elongation of the composite reach themaximum values of 230 MPa, 125 MPa and 9.5%. When the holding time is 110 min,TiB 2 particles agglomerate at the grain boundary, and the mechanical properties of thecomposites decrease. When the Ti/B molar ratio is 1/1, in addition to forming TiB 2particles, large size hard brittle phase TiAl 3 appear in the microstructure. When theTi/B molar ratio is 1/2.2, the formation of hard brittle phase TiAl 3 can be inhibited,TiB 2 particles are uniformly distributed in the matrix and the grain refinement is mostobviously. The ultimate tensile strength, yield strength and elongation of thecomposite reach the maximum values of 225 MPa, 110 MPa and 8.5%. When the Ti/Bmolar ratio is 1/3, the unreacted residual mixed salts appear in the microstructure ofthe composite, and the residual mixed salts impurities exist at the interface betweenTiB 2 particles and the matrix, so reduce the mechanical properties of the composite.

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Section: Introductionmentioning

confidence: 99%

Effect of holding time and Ti/B molar ratio on microstructure and mechanical properties of in-situ TiB₂/Al composites fabricated by mixed salt reaction

Xie¹,

Cao²

2023

Mater. Res. Express

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“…Wang et al [8] successfully synthesized in situ TiB 2 /A356 composites through the salt-metal reaction route, and TiB 2 clusters were randomly distributed on the grain boundaries. Zhang et al [9] prepared in-situ (TiB 2 + ZrB 2 )/AlSi9Cu3 composites using the Al-K 2 TiF 6 -K 2 ZrF 6 -KBF 4 system as raw materials. They found that the particles agglomerated into many “reinforcing groups” distributed along the matrix grain boundaries, and the number of particle clusters increased with the increased mass fraction of reactant.…”

Section: Introductionmentioning

confidence: 99%

Microstructural evolution and mechanical properties of TiB2/2195 composites fabricated by ultrasonic-assisted in-situ casting

Xie

Jiang²,

Li³

et al. 2022

Ultrasonics Sonochemistry

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“…Binary nanoparticles can combine the advantages of two kinds of particles to improve the mechanical properties. The previous research of our research group prepared and investigated the microstructures and mechanical properties of in situ (TiB 2 +ZrB 2 )/AlSi9Cu3 composites [9] and (ZrB 2 +Al 2 O 3 +Al 3 Zr) p /Al-4Cu composites [10]. For (TiB 2 +ZrB 2 )/AlSi9Cu3 composites, the size of particles was 20-100 nm, and the tensile strength and elongation reached 265 MPa and 14.8% respectively.…”

Section: Introductionmentioning

confidence: 99%

Microstructures and properties of in-situ (ZrB₂ + Al₂O₃)_np/AA6111 composites synthesized under magnetic and ultrasonic fields

Xia¹,

Zhao²,

Chen³

et al. 2020

Mater. Res. Express

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ZrB 2 and Al 2 O 3 nanoparticle-reinforced aluminum matrix composites were successfully prepared by in situ chemical reaction of the Al-Na 2 B 4 O 7 -K 2 ZrF 6 system with magnetic field applied in the in situ reaction and ultrasonic field introduced in solidification. The results indicated that the optimized magnetic frequency was 10 Hz, and the ultrasonic power was 1.0 kW. XRD analysis showed that ZrB 2 and Al 2 O 3 nanoparticles have been obtained. The smaller clusters were evenly distributed in the matrix. ZrB 2 and Al 2 O 3 nanoparticles were dispersed and uniformly distributed. The average size of particles and grain size of (ZrB 2 +Al 2 O 3 ) np /AA6111 composites were refined to 45±10 nm and 50.4±12 μm, respectively. The maximum Vickers hardness, tensile strength, yield strength and elongation of the composites synthesized under the optimized magnetic and ultrasonic fields were 142.2 HV, 355.4 MPa, 259.4 MPa and 22.4%, which were 1.34, 1.36, 1.35 and 1.33 times higher than that of AA6111 alloy, respectively.

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Preparation, microstructures and mechanical properties of in-situ (TiB2 + ZrB2)/AlSi9Cu3 composites

Cited by 35 publications

References 30 publications

Effect of holding time and Ti/B molar ratio on microstructure and mechanical properties of in-situ TiB₂/Al composites fabricated by mixed salt reaction

Effect of holding time and Ti/B molar ratio on microstructure and mechanical properties of in-situ TiB₂/Al composites fabricated by mixed salt reaction

Microstructural evolution and mechanical properties of TiB2/2195 composites fabricated by ultrasonic-assisted in-situ casting

Microstructures and properties of in-situ (ZrB₂ + Al₂O₃)_np/AA6111 composites synthesized under magnetic and ultrasonic fields

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Preparation, microstructures and mechanical properties of in-situ (TiB2 + ZrB2)/AlSi9Cu3 composites

Cited by 35 publications

References 30 publications

Effect of holding time and Ti/B molar ratio on microstructure and mechanical properties of in-situ TiB2/Al composites fabricated by mixed salt reaction

Effect of holding time and Ti/B molar ratio on microstructure and mechanical properties of in-situ TiB2/Al composites fabricated by mixed salt reaction

Microstructural evolution and mechanical properties of TiB2/2195 composites fabricated by ultrasonic-assisted in-situ casting

Microstructures and properties of in-situ (ZrB2 + Al2O3)np/AA6111 composites synthesized under magnetic and ultrasonic fields

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Effect of holding time and Ti/B molar ratio on microstructure and mechanical properties of in-situ TiB₂/Al composites fabricated by mixed salt reaction

Effect of holding time and Ti/B molar ratio on microstructure and mechanical properties of in-situ TiB₂/Al composites fabricated by mixed salt reaction

Microstructures and properties of in-situ (ZrB₂ + Al₂O₃)_np/AA6111 composites synthesized under magnetic and ultrasonic fields