{"title":"时效处理对SiCp/Al复合材料多轴比例和非比例加载疲劳行为及断裂机制的影响","authors":"Yinfu Liu, Guoqiu He, Xiaoshan Liu, Yiping Liao","doi":"10.1111/ffe.70052","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>The effects of aging treatment on fatigue behavior and fracture mechanism of SiCp/Al composites under uniaxial, multiaxial proportional, and non-proportional loads were investigated. The SiCp/Al composites exhibit cyclic softening in torsional strain amplitude, and the cyclic softening/hardening of the axial strain amplitude is associated with the proportional/non-proportional loading conditions. The axial and torsional strains of SiCp/Al composites under symmetric multiaxial loads show significant asymmetric strain response. The aging treatment improved the Si particle distribution, and the probability density statistics of Si particle size under different aging conditions were analyzed. The additional plastic damage caused by multiaxial loading is highly susceptible to aging treatment. The addition of SiC particles significantly changes the crack growth path and dislocation accumulation. EBSD was employed to investigate the multiaxial fatigue failure mechanism of SiCp/Al composites.</p>\n </div>","PeriodicalId":12298,"journal":{"name":"Fatigue & Fracture of Engineering Materials & Structures","volume":"48 11","pages":"4570-4587"},"PeriodicalIF":3.2000,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of Aging Treatment on the Fatigue Behavior and Fracture Mechanism of SiCp/Al Composites Under Multiaxial Proportional and Non-Proportional Loadings\",\"authors\":\"Yinfu Liu, Guoqiu He, Xiaoshan Liu, Yiping Liao\",\"doi\":\"10.1111/ffe.70052\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>The effects of aging treatment on fatigue behavior and fracture mechanism of SiCp/Al composites under uniaxial, multiaxial proportional, and non-proportional loads were investigated. The SiCp/Al composites exhibit cyclic softening in torsional strain amplitude, and the cyclic softening/hardening of the axial strain amplitude is associated with the proportional/non-proportional loading conditions. The axial and torsional strains of SiCp/Al composites under symmetric multiaxial loads show significant asymmetric strain response. The aging treatment improved the Si particle distribution, and the probability density statistics of Si particle size under different aging conditions were analyzed. The additional plastic damage caused by multiaxial loading is highly susceptible to aging treatment. The addition of SiC particles significantly changes the crack growth path and dislocation accumulation. EBSD was employed to investigate the multiaxial fatigue failure mechanism of SiCp/Al composites.</p>\\n </div>\",\"PeriodicalId\":12298,\"journal\":{\"name\":\"Fatigue & Fracture of Engineering Materials & Structures\",\"volume\":\"48 11\",\"pages\":\"4570-4587\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2025-08-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Fatigue & Fracture of Engineering Materials & Structures\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1111/ffe.70052\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, MECHANICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fatigue & Fracture of Engineering Materials & Structures","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ffe.70052","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
Influence of Aging Treatment on the Fatigue Behavior and Fracture Mechanism of SiCp/Al Composites Under Multiaxial Proportional and Non-Proportional Loadings
The effects of aging treatment on fatigue behavior and fracture mechanism of SiCp/Al composites under uniaxial, multiaxial proportional, and non-proportional loads were investigated. The SiCp/Al composites exhibit cyclic softening in torsional strain amplitude, and the cyclic softening/hardening of the axial strain amplitude is associated with the proportional/non-proportional loading conditions. The axial and torsional strains of SiCp/Al composites under symmetric multiaxial loads show significant asymmetric strain response. The aging treatment improved the Si particle distribution, and the probability density statistics of Si particle size under different aging conditions were analyzed. The additional plastic damage caused by multiaxial loading is highly susceptible to aging treatment. The addition of SiC particles significantly changes the crack growth path and dislocation accumulation. EBSD was employed to investigate the multiaxial fatigue failure mechanism of SiCp/Al composites.
期刊介绍：
Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.
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