Binkai Yang , Boxin Wei , Wujing Fu , Peihao Ye , Xin Wang , Wenbin Fang , Xuewen Li , Rengeng Li , Hao Wu , Guohua Fan
{"title":"局部应变下界面反应层对Ti/Al层状金属复合材料单轴拉伸裂纹扩展行为的影响","authors":"Binkai Yang , Boxin Wei , Wujing Fu , Peihao Ye , Xin Wang , Wenbin Fang , Xuewen Li , Rengeng Li , Hao Wu , Guohua Fan","doi":"10.1016/j.msea.2025.148669","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the effect of the interfacial reaction layer on the crack propagation behavior of Ti/Al layered metal composites (LMCs) under uniaxial tensile testing. Ti/Al and Ti/TiAl<sub>3</sub>/Al LMCs were fabricated using vacuum hot-pressing. In-situ tensile tests, coupled with digital image correlation methods, were conducted to analyze crack propagation behavior from the perspective of local strain. These results show that the fracture elongation of LMCs decreases significantly with the presence of an interfacial reaction layer. Crack propagation shifts from following the layer interface to propagating perpendicularly to it. At low-tensile strain levels, microcracking occurs within the interfacial reaction layer. However, the adjacent ductile layers effectively suppress the instability of these microcracks. During tension deformation, the stress fields at the crack-tip in the neighboring interfacial reaction layers bridge together, forming stress-concentrated bands, that cause significant strain localization. More importantly, the accelerated accumulation of dislocation in the strain-localized regions depletes the work-hardening capacity, thereby promoting crack propagation along the localized path. Therefore, inhibiting the formation of the interfacial reaction layer in LMCs can enhance strain delocalization and improve fracture elongation.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"942 ","pages":"Article 148669"},"PeriodicalIF":6.1000,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of interfacial reaction layers on crack propagation behavior of Ti/Al layered metal composites in uniaxial tensile test from the perspective of local strain\",\"authors\":\"Binkai Yang , Boxin Wei , Wujing Fu , Peihao Ye , Xin Wang , Wenbin Fang , Xuewen Li , Rengeng Li , Hao Wu , Guohua Fan\",\"doi\":\"10.1016/j.msea.2025.148669\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates the effect of the interfacial reaction layer on the crack propagation behavior of Ti/Al layered metal composites (LMCs) under uniaxial tensile testing. Ti/Al and Ti/TiAl<sub>3</sub>/Al LMCs were fabricated using vacuum hot-pressing. In-situ tensile tests, coupled with digital image correlation methods, were conducted to analyze crack propagation behavior from the perspective of local strain. These results show that the fracture elongation of LMCs decreases significantly with the presence of an interfacial reaction layer. Crack propagation shifts from following the layer interface to propagating perpendicularly to it. At low-tensile strain levels, microcracking occurs within the interfacial reaction layer. However, the adjacent ductile layers effectively suppress the instability of these microcracks. During tension deformation, the stress fields at the crack-tip in the neighboring interfacial reaction layers bridge together, forming stress-concentrated bands, that cause significant strain localization. More importantly, the accelerated accumulation of dislocation in the strain-localized regions depletes the work-hardening capacity, thereby promoting crack propagation along the localized path. Therefore, inhibiting the formation of the interfacial reaction layer in LMCs can enhance strain delocalization and improve fracture elongation.</div></div>\",\"PeriodicalId\":385,\"journal\":{\"name\":\"Materials Science and Engineering: A\",\"volume\":\"942 \",\"pages\":\"Article 148669\"},\"PeriodicalIF\":6.1000,\"publicationDate\":\"2025-06-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Science and Engineering: A\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0921509325008937\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science and Engineering: A","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921509325008937","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Effect of interfacial reaction layers on crack propagation behavior of Ti/Al layered metal composites in uniaxial tensile test from the perspective of local strain
This study investigates the effect of the interfacial reaction layer on the crack propagation behavior of Ti/Al layered metal composites (LMCs) under uniaxial tensile testing. Ti/Al and Ti/TiAl3/Al LMCs were fabricated using vacuum hot-pressing. In-situ tensile tests, coupled with digital image correlation methods, were conducted to analyze crack propagation behavior from the perspective of local strain. These results show that the fracture elongation of LMCs decreases significantly with the presence of an interfacial reaction layer. Crack propagation shifts from following the layer interface to propagating perpendicularly to it. At low-tensile strain levels, microcracking occurs within the interfacial reaction layer. However, the adjacent ductile layers effectively suppress the instability of these microcracks. During tension deformation, the stress fields at the crack-tip in the neighboring interfacial reaction layers bridge together, forming stress-concentrated bands, that cause significant strain localization. More importantly, the accelerated accumulation of dislocation in the strain-localized regions depletes the work-hardening capacity, thereby promoting crack propagation along the localized path. Therefore, inhibiting the formation of the interfacial reaction layer in LMCs can enhance strain delocalization and improve fracture elongation.
期刊介绍:
Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.