{"title":"片状AA1050/TiC复合材料的成形极限图及平面应力断裂韧性","authors":"Mohammad Heydari Vini, Saeed Daneshmand","doi":"10.1007/s12289-023-01764-1","DOIUrl":null,"url":null,"abstract":"<div><p>The forming limit diagram (FLD), mechanical properties and fracture toughness of aluminum foil composites fabricated via accumulative roll bonding (ARB) process have been investigated as its novelty for the first time. To do this, AA1050/TiC composite foils with thickness of 0.2 mm have been fabricated from one up to twelve ARB passes at 320 °C. Also, optical microscopy (OM) was used to investigate the effect of cumulative forming process on the grain structure. The strength of samples improved to 168. 6 MPa after the 12th cumulative rolling pass, registering 248% improvement in comparison with initial AA1050 sample. Also, by cumulating the plastic strain at higher passes, the bonding quality among composite layers enhanced. SEM fracture surface morphology of samples showed the conversion of fracture mode to shear mode for composites fabricated at high number of passes. So, in comparison with the annealed sample, deep dimples are shrinking slowly and their number and depth were reduced. As the criterion of formability and at higher passes, the area under the FLDs, dropped sharply for one pass processed sample and then improved. Results of fracture test revealed that the value of fracture toughness enhanced continually and got to the 30 MPa.m<sup>1/2</sup> at the 12th pass. Grain refinement and ARB process nature are two main mechanisms which are responsible for all ductility changes and mechanical properties.</p></div>","PeriodicalId":591,"journal":{"name":"International Journal of Material Forming","volume":null,"pages":null},"PeriodicalIF":2.6000,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12289-023-01764-1.pdf","citationCount":"0","resultStr":"{\"title\":\"Forming limit diagram and plane stress fracture toughness of foil AA1050/TiC composites\",\"authors\":\"Mohammad Heydari Vini, Saeed Daneshmand\",\"doi\":\"10.1007/s12289-023-01764-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The forming limit diagram (FLD), mechanical properties and fracture toughness of aluminum foil composites fabricated via accumulative roll bonding (ARB) process have been investigated as its novelty for the first time. To do this, AA1050/TiC composite foils with thickness of 0.2 mm have been fabricated from one up to twelve ARB passes at 320 °C. Also, optical microscopy (OM) was used to investigate the effect of cumulative forming process on the grain structure. The strength of samples improved to 168. 6 MPa after the 12th cumulative rolling pass, registering 248% improvement in comparison with initial AA1050 sample. Also, by cumulating the plastic strain at higher passes, the bonding quality among composite layers enhanced. SEM fracture surface morphology of samples showed the conversion of fracture mode to shear mode for composites fabricated at high number of passes. So, in comparison with the annealed sample, deep dimples are shrinking slowly and their number and depth were reduced. As the criterion of formability and at higher passes, the area under the FLDs, dropped sharply for one pass processed sample and then improved. Results of fracture test revealed that the value of fracture toughness enhanced continually and got to the 30 MPa.m<sup>1/2</sup> at the 12th pass. Grain refinement and ARB process nature are two main mechanisms which are responsible for all ductility changes and mechanical properties.</p></div>\",\"PeriodicalId\":591,\"journal\":{\"name\":\"International Journal of Material Forming\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2023-07-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s12289-023-01764-1.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Material Forming\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12289-023-01764-1\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, MANUFACTURING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Material Forming","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12289-023-01764-1","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}
Forming limit diagram and plane stress fracture toughness of foil AA1050/TiC composites
The forming limit diagram (FLD), mechanical properties and fracture toughness of aluminum foil composites fabricated via accumulative roll bonding (ARB) process have been investigated as its novelty for the first time. To do this, AA1050/TiC composite foils with thickness of 0.2 mm have been fabricated from one up to twelve ARB passes at 320 °C. Also, optical microscopy (OM) was used to investigate the effect of cumulative forming process on the grain structure. The strength of samples improved to 168. 6 MPa after the 12th cumulative rolling pass, registering 248% improvement in comparison with initial AA1050 sample. Also, by cumulating the plastic strain at higher passes, the bonding quality among composite layers enhanced. SEM fracture surface morphology of samples showed the conversion of fracture mode to shear mode for composites fabricated at high number of passes. So, in comparison with the annealed sample, deep dimples are shrinking slowly and their number and depth were reduced. As the criterion of formability and at higher passes, the area under the FLDs, dropped sharply for one pass processed sample and then improved. Results of fracture test revealed that the value of fracture toughness enhanced continually and got to the 30 MPa.m1/2 at the 12th pass. Grain refinement and ARB process nature are two main mechanisms which are responsible for all ductility changes and mechanical properties.
期刊介绍:
The Journal publishes and disseminates original research in the field of material forming. The research should constitute major achievements in the understanding, modeling or simulation of material forming processes. In this respect ‘forming’ implies a deliberate deformation of material.
The journal establishes a platform of communication between engineers and scientists, covering all forming processes, including sheet forming, bulk forming, powder forming, forming in near-melt conditions (injection moulding, thixoforming, film blowing etc.), micro-forming, hydro-forming, thermo-forming, incremental forming etc. Other manufacturing technologies like machining and cutting can be included if the focus of the work is on plastic deformations.
All materials (metals, ceramics, polymers, composites, glass, wood, fibre reinforced materials, materials in food processing, biomaterials, nano-materials, shape memory alloys etc.) and approaches (micro-macro modelling, thermo-mechanical modelling, numerical simulation including new and advanced numerical strategies, experimental analysis, inverse analysis, model identification, optimization, design and control of forming tools and machines, wear and friction, mechanical behavior and formability of materials etc.) are concerned.