Superior bending and impact properties of SiC matrix composites infiltrated with an aluminium alloy

Wang, Wei; Li, Qiang; Ma, Ruina; Cao, Xiaoming; Cui, Yaqi; Fan, Yongzhe; Yang, Tai; Liu, Baoxi

doi:10.1016/j.ceramint.2016.12.110

Cited by 13 publications

(5 citation statements)

References 28 publications

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“…The toughness values of Ti 3 Si(Al)C 2 were reported to range from 5 to 20 MPa·m 1/2 . The bending strength and fracture toughness of the SiC substrate were 185 MPa [17] and 1.7 MPa·m 1/2 (tested in this work), respectively, which are not shown in Figure 5. The bending strength and fracture toughness (determined using SENB test) of the SiC ceramics increased by 89 and 94%, respectively, after infiltration with the Al–Si alloy (Si: 10 wt.%).…”

Section: Resultsmentioning

confidence: 85%

“…Therefore, the presence of the Al–Si alloy in the four fabricated composites helped improve the overall properties of the SiC matrix. In our previous study, we easily achieved complete infiltration with the Al alloy after infiltrating with the Al–Si alloy (Si: 10 wt.%) for 4 h [17]. In this work, the Al–Si–xTi alloy (Si: 10 wt.%) was used for the infiltration.…”

Section: Resultsmentioning

confidence: 99%

“…To improve the wettability and avoid the formation of Al 4 C 3 , the addition of elemental Si and Ti was proposed [12,13,14,15,16]. Adding Ti to the Al–Si system results in a new Ti 3 Si(Al)C 2 phase in situ in the SiC matrix; this is a novel structural material having a high toughness because of the combination of the ceramic and metallic properties [17,18,19]. Ti 3 Si(Al)C 2 can be combined with SiC to improve the overall performance of the material through the RMI, making it suitable for use under complex service conditions [20].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Ti Addition on the Microstructure and Mechanical Properties of SiC Matrix Composites Infiltrated by Al–Si (10 wt.%)–xTi Alloy

Zhao

et al. 2019

Materials

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This paper proposes a simple reactive melt infiltration process to improve the mechanical properties of silicon carbide (SiC) ceramics. SiC matrix composites were infiltrated by Al–Si (10 wt.%)–xTi melts at 900 °C for 4 h. The effects of Ti addition on the microstructure and mechanical properties of the composites were investigated. The results showed that the three-point bending strength, fracture toughness (by single-edge notched beam test), and fracture toughness (by Vickers indentation method) of the SiC ceramics increased most by 34.3%, 48.5%, and 128.5%, respectively, following an infiltration with the Al–Si (10 wt.%)–Ti (15 wt.%) melt. A distinct white reaction layer mainly containing a Ti3Si(Al)C2 phase was formed on the surface of the composites infiltrated by Al alloys containing Ti. Ti–Al intermetallic compounds were scattered in the inner regions of the composites. With the increase in the Ti content (from 0 to 15 wt.%) in the Al alloy, the relative contents of Ti3Si(Al)C2 and Ti–Al intermetallic compounds increased. Compared with the fabricated composite infiltrated by an Al alloy without Ti, the fabricated composites infiltrated by Al alloys containing Ti showed improved overall mechanical properties owing to formation of higher relative content Ti3Si(Al)C2 phase and small amounts of Ti–Al intermetallic compounds.

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Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Ti Addition on the Microstructure and Mechanical Properties of SiC Matrix Composites Infiltrated by Al–Si (10 wt.%)–xTi Alloy

Zhao

et al. 2019

Materials

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“…5,6 MMCs consist of matrix, which is usually a metallic base and the reinforcement phase, which may be either ceramic, glass or polymer in any shape and size. 7 Processing techniques for MMCs are categorized into two types: (a) liquid state processing 8 and (b) solid-state processing, 9 which involves different production methods such as infiltration process 10 and in situ fabrication. 11 Among all, powder metallurgy 12 and casting route 13 have been reported as the most economical techniques in previous studies.…”

Section: Introductionmentioning

confidence: 99%

Microstructural, mechanical and corrosion behaviour of Al–Si alloy reinforced with SiC metal matrix composite

Bandil

Vashisth

Kumar

et al. 2019

Journal of Composite Materials

123

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The aim of the present study is to investigate the effect of Si and SiC addition on the microstructure, mechanical, and corrosion properties of Al matrix-based composites. Al–Si (2 wt% fixed) alloy reinforced SiC composites were prepared by stir-casting process using SiC reinforcement contents from 0 to 20 wt% at an interval of 5%. A uniform dispersion of SiC particles in the Al matrix was observed from the scanning electron microscopic analysis. Maximum hardness is found for composites having 15 wt% reinforcement content. Pin-on-disc wear test reveals that SiC particles increase the wear resistance of composites. Corrosion test reveals that composites reinforced with 20% reinforcement content shows the minimum i corr among all the compositions, attributing to the maximum corrosion resistance. Tribological and corrosion behaviour were found to be dependent on the reinforcement content. However, they were not interdependent on each other. It is expected that the present study would be helpful in the development of lightweight composites for aerospace and shipping industries applications.

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“…Aluminium-based metal matrix composites (MMCs) reinforced with the ceramic particle SiC, is an interesting structural and functional material in aerospace, motor sport, and automotive industrial fields due to its several attractive advantages over the conventional base alloy, such as high specific stiffness and strength, high thermal stability, and its superior wear resistance [1][2][3][4]. It is used as well in some other fields due to its attractive properties.…”

Section: Introductionmentioning

confidence: 99%

Friction stir welding of new electronic packaging materials SiCp/Al composite with T-joint

et al. 2018

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Using friction stir welding, the electronic container box and lid made from aluminium matrix composites with reinforcement of SiC particle (15 vol% SiCp/Al-MMCs) was welded successfully with T-joint. The temperature distribution of box during the process, mechanical property and microstructure of the joint as well as gas tightness of welded box was investigated. The experimental results indicated that the satisfactory T-joint can be obtained under appropriate friction stir welding parameters. During the welding process, the bottom center, which was used to place the electronic component, reached a quite lower temperature of 100°C. That can ensure safety of components in the box. After the welding process, the microstructure in stir zone was better than in base material due to the refining and homogeneous distribution of the SiC particles. The experimental results showed that the electronic container box after friction stir welding had gas tightness. The He-leakage rate was under 10-8 Pa•m3/s.

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Superior bending and impact properties of SiC matrix composites infiltrated with an aluminium alloy

Cited by 13 publications

References 28 publications

Effect of Ti Addition on the Microstructure and Mechanical Properties of SiC Matrix Composites Infiltrated by Al–Si (10 wt.%)–xTi Alloy

Effect of Ti Addition on the Microstructure and Mechanical Properties of SiC Matrix Composites Infiltrated by Al–Si (10 wt.%)–xTi Alloy

Microstructural, mechanical and corrosion behaviour of Al–Si alloy reinforced with SiC metal matrix composite

Friction stir welding of new electronic packaging materials SiCp/Al composite with T-joint

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