Atef Hamada , Ali Khosravifard , Matias Jaskari , Antti Järvenpää , Mahmoud Khedr
{"title":"快速加热提高高mn TWIP钢的力学性能:组织演变与性能优化研究","authors":"Atef Hamada , Ali Khosravifard , Matias Jaskari , Antti Järvenpää , Mahmoud Khedr","doi":"10.1016/j.prostr.2025.06.100","DOIUrl":null,"url":null,"abstract":"<div><div>This study explores the impact of fast heating (FH) technique on the microstructural evolution of heavily cold-rolled TWIP steel, focusing on the temperature range of 1000-1200°C for a duration of 5 seconds. Utilizing a Gleeble 3600 simulator, FH experiments were characterized by rapid heating rates of 500°C/s and cooling rates of 400°C/s. The promoted microstructures were analyzed using Electron Backscatter Diffraction (EBSD), while mechanical properties were evaluated through microhardness measurements and uniaxial tensile tests. The results revealed that the FH process promotes a fully recrystallized microstructure. At 1000°C, this FH cycle yields an ultrafine-grained structure with an average grain size of approximately 2.5 µm, which synergistically enhances both tensile strength (750 MPa) and extreme ductility (105%). However, the FH cycle at 1200°C results in a coarser-grained structure with an average grain size of about 20 µm. This microstructure, while reducing tensile strength to 650 MPa, significantly increases ductility to 120%. These findings illustrate a valuable synergy between FH parameters and microstructural development, offering a strategic approach to optimizing the mechanical performance of TWIP steels.</div></div>","PeriodicalId":20518,"journal":{"name":"Procedia Structural Integrity","volume":"68 ","pages":"Pages 581-587"},"PeriodicalIF":0.0000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancement of Mechanical Properties of high-Mn TWIP Steel with Fast Heating process: Insights into Microstructural Evolution and Performance Optimization\",\"authors\":\"Atef Hamada , Ali Khosravifard , Matias Jaskari , Antti Järvenpää , Mahmoud Khedr\",\"doi\":\"10.1016/j.prostr.2025.06.100\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study explores the impact of fast heating (FH) technique on the microstructural evolution of heavily cold-rolled TWIP steel, focusing on the temperature range of 1000-1200°C for a duration of 5 seconds. Utilizing a Gleeble 3600 simulator, FH experiments were characterized by rapid heating rates of 500°C/s and cooling rates of 400°C/s. The promoted microstructures were analyzed using Electron Backscatter Diffraction (EBSD), while mechanical properties were evaluated through microhardness measurements and uniaxial tensile tests. The results revealed that the FH process promotes a fully recrystallized microstructure. At 1000°C, this FH cycle yields an ultrafine-grained structure with an average grain size of approximately 2.5 µm, which synergistically enhances both tensile strength (750 MPa) and extreme ductility (105%). However, the FH cycle at 1200°C results in a coarser-grained structure with an average grain size of about 20 µm. This microstructure, while reducing tensile strength to 650 MPa, significantly increases ductility to 120%. These findings illustrate a valuable synergy between FH parameters and microstructural development, offering a strategic approach to optimizing the mechanical performance of TWIP steels.</div></div>\",\"PeriodicalId\":20518,\"journal\":{\"name\":\"Procedia Structural Integrity\",\"volume\":\"68 \",\"pages\":\"Pages 581-587\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2025-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Procedia Structural Integrity\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2452321625001015\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Procedia Structural Integrity","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2452321625001015","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Enhancement of Mechanical Properties of high-Mn TWIP Steel with Fast Heating process: Insights into Microstructural Evolution and Performance Optimization
This study explores the impact of fast heating (FH) technique on the microstructural evolution of heavily cold-rolled TWIP steel, focusing on the temperature range of 1000-1200°C for a duration of 5 seconds. Utilizing a Gleeble 3600 simulator, FH experiments were characterized by rapid heating rates of 500°C/s and cooling rates of 400°C/s. The promoted microstructures were analyzed using Electron Backscatter Diffraction (EBSD), while mechanical properties were evaluated through microhardness measurements and uniaxial tensile tests. The results revealed that the FH process promotes a fully recrystallized microstructure. At 1000°C, this FH cycle yields an ultrafine-grained structure with an average grain size of approximately 2.5 µm, which synergistically enhances both tensile strength (750 MPa) and extreme ductility (105%). However, the FH cycle at 1200°C results in a coarser-grained structure with an average grain size of about 20 µm. This microstructure, while reducing tensile strength to 650 MPa, significantly increases ductility to 120%. These findings illustrate a valuable synergy between FH parameters and microstructural development, offering a strategic approach to optimizing the mechanical performance of TWIP steels.