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Effect of void content on mechanical behavior and failure mechanism of SiC/AZ91D composite materials
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Buwei LI, Junping YAO, Guoxin CHEN, Chaoqun LIANG, Yiran LI
Journal of Materials Engineering | 2025, 53(12) : 132 - 145
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Journal of Materials Engineering | 2025, 53(12): 132-145
• RESEARCH ARTICLE •
Effect of void content on mechanical behavior and failure mechanism of SiC/AZ91D composite materials
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Buwei LI, Junping YAO, Guoxin CHEN, Chaoqun LIANG, Yiran LI
Affiliations
  • School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University,Nanchang 330063,China
Published: 2025-12-20 doi: 10.11868/j.issn.1001-4381.2023.000782
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Based on finite element method and cohesion method, a three-dimensional model of SiC/AZ91D composite materials with varying void contents is constructed. The impact of void content on the mechanical behavior of the composite materials is investigated employing the stress concentration factor method, and an in-depth exploration of the failure mechanism is conducted.The findings reveal that the increase in void content will lead to a decrease in the mechanical properties of composite materials. The crack appearance and extension time of cracks are accelerated with an increasing void content. During the elastic deformation phase, the primary load is borne by the matrix, and the fluctuation in void content has a comparatively negligible effect on the stress concentration factor. Upon entering the plastic deformation phase, the load is progressively transferred from the matrix to the SiC particles. With an elevated void content, the load transferred from the matrix to the SiC particles diminishes, causing a deceleration in the growth rate of the stress concentration factor.

stress concentration coefficient  /  SiC reinforced magnesium matrix composites  /  void content  /  in-situ tensile test
李步炜, 尧军平, 陈国鑫, 梁超群, 李怡然. 孔隙率对SiC/AZ91D复合材料力学行为及其失效机理的影响. 材料工程, 2025 , 53 (12) : 132 -145 . DOI: 10.11868/j.issn.1001-4381.2023.000782
Buwei LI, Junping YAO, Guoxin CHEN, Chaoqun LIANG, Yiran LI. Effect of void content on mechanical behavior and failure mechanism of SiC/AZ91D composite materials[J]. Journal of Materials Engineering, 2025 , 53 (12) : 132 -145 . DOI: 10.11868/j.issn.1001-4381.2023.000782
Year 2025 volume 53 Issue 12
45
20
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doi: 10.11868/j.issn.1001-4381.2023.000782
  • Receive Date:2023-11-28
  • Online Date:2026-10-26
  • Published:2025-12-20
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  • Received:2023-11-28
  • Accepted:2024-01-10
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    School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University,Nanchang 330063,China
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表12种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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