{"title":"通过热模拟指导轧制 Al0.3CrFeNiCu1.5 合金和轧制合金板的断裂韧性","authors":"Rongyi Na, Shulin Dong, Yingdong Qu, Ruirun Chen, Guanglong Li, Wei Zhang, Siruo Zhang, Shibing Liu","doi":"10.1016/j.mtcomm.2024.110323","DOIUrl":null,"url":null,"abstract":"In order to strengthen high-entropy alloys with both good hot deformation processing property and fracture toughness, and avoid property damage caused by microstructure defects, optimized AlCrFeNiCu alloy is designed and prepared. The hot deformation curve of the alloy is studied, the constitutive equation of hot compression is deduced, the hot processing map is drawn, and the microstructure evolution and fracture toughness under the optimum hot deformation conditions are studied. The results show that the alloy has not high diffusion activation energy (=70.39 KJ/mol), high stress index (=13.11), high power dissipation factor and large hot processing zone. All show that the alloy has good deformation processing ability, and deformation processing can enhance the mechanical properties of the alloy. The hot processing zone is identified to be 940 C-1060 C, 0.01 s-0.04 s. After rolling and homogenization annealing, the alloy is composed of BCC+FCC dual-phase solid solution. After rolling deformation, discontinuous DRX is caused, forming a soft BCC phase (disordered A2 phase), and the disordered A2 phase squeezes each other to improve the bearing capacity. Dislocation strengthening effect is obvious. The preferred growth direction of the dendrite is either along <100> or along <110>. The fracture toughness value is high, reaching 54.20 MPa⋅m. The dendrite is tangent to the notch, which prevents the crack propagation from forming a barrier and helps to enhance the fracture toughness of the alloy.","PeriodicalId":18477,"journal":{"name":"Materials Today Communications","volume":"25 1","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Rolling Al0.3CrFeNiCu1.5 alloy guided by hot simulation and fracture toughness of rolling alloy sheet\",\"authors\":\"Rongyi Na, Shulin Dong, Yingdong Qu, Ruirun Chen, Guanglong Li, Wei Zhang, Siruo Zhang, Shibing Liu\",\"doi\":\"10.1016/j.mtcomm.2024.110323\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In order to strengthen high-entropy alloys with both good hot deformation processing property and fracture toughness, and avoid property damage caused by microstructure defects, optimized AlCrFeNiCu alloy is designed and prepared. The hot deformation curve of the alloy is studied, the constitutive equation of hot compression is deduced, the hot processing map is drawn, and the microstructure evolution and fracture toughness under the optimum hot deformation conditions are studied. The results show that the alloy has not high diffusion activation energy (=70.39 KJ/mol), high stress index (=13.11), high power dissipation factor and large hot processing zone. All show that the alloy has good deformation processing ability, and deformation processing can enhance the mechanical properties of the alloy. The hot processing zone is identified to be 940 C-1060 C, 0.01 s-0.04 s. After rolling and homogenization annealing, the alloy is composed of BCC+FCC dual-phase solid solution. After rolling deformation, discontinuous DRX is caused, forming a soft BCC phase (disordered A2 phase), and the disordered A2 phase squeezes each other to improve the bearing capacity. Dislocation strengthening effect is obvious. The preferred growth direction of the dendrite is either along <100> or along <110>. The fracture toughness value is high, reaching 54.20 MPa⋅m. The dendrite is tangent to the notch, which prevents the crack propagation from forming a barrier and helps to enhance the fracture toughness of the alloy.\",\"PeriodicalId\":18477,\"journal\":{\"name\":\"Materials Today Communications\",\"volume\":\"25 1\",\"pages\":\"\"},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2024-09-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Today Communications\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.mtcomm.2024.110323\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Today Communications","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.mtcomm.2024.110323","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Rolling Al0.3CrFeNiCu1.5 alloy guided by hot simulation and fracture toughness of rolling alloy sheet
In order to strengthen high-entropy alloys with both good hot deformation processing property and fracture toughness, and avoid property damage caused by microstructure defects, optimized AlCrFeNiCu alloy is designed and prepared. The hot deformation curve of the alloy is studied, the constitutive equation of hot compression is deduced, the hot processing map is drawn, and the microstructure evolution and fracture toughness under the optimum hot deformation conditions are studied. The results show that the alloy has not high diffusion activation energy (=70.39 KJ/mol), high stress index (=13.11), high power dissipation factor and large hot processing zone. All show that the alloy has good deformation processing ability, and deformation processing can enhance the mechanical properties of the alloy. The hot processing zone is identified to be 940 C-1060 C, 0.01 s-0.04 s. After rolling and homogenization annealing, the alloy is composed of BCC+FCC dual-phase solid solution. After rolling deformation, discontinuous DRX is caused, forming a soft BCC phase (disordered A2 phase), and the disordered A2 phase squeezes each other to improve the bearing capacity. Dislocation strengthening effect is obvious. The preferred growth direction of the dendrite is either along <100> or along <110>. The fracture toughness value is high, reaching 54.20 MPa⋅m. The dendrite is tangent to the notch, which prevents the crack propagation from forming a barrier and helps to enhance the fracture toughness of the alloy.
期刊介绍:
Materials Today Communications is a primary research journal covering all areas of materials science. The journal offers the materials community an innovative, efficient and flexible route for the publication of original research which has not found the right home on first submission.