Juan Li, Chuanlong Han, Ruiyang Wang, Guanghui Zhao, Huaying Li
{"title":"利用短时脉冲电流协同提高2205双相钢的强度和延展性","authors":"Juan Li, Chuanlong Han, Ruiyang Wang, Guanghui Zhao, Huaying Li","doi":"10.1007/s12540-025-01948-1","DOIUrl":null,"url":null,"abstract":"<p>The direct application of pulsed electric current (PEC) treatment to materials can induce microstructural modifications and thus improve mechanical properties compared to conventional heat treatments. Pulsed current treatments are characterized by simplicity, speed, and low energy consumption. This study explores the effects of PEC treatment at varying current densities on the mechanical properties and microstructure of 2205 duplex stainless steel. A current density of 19.5 A/mm<sup>2</sup> increases tensile strength by 36 MPa and elongation by 5.7% compared to the original rolled sample, resulting in superior mechanical properties. Comparative analysis with isothermal annealing, conducted at equivalent temperature and duration, reveals that the PEC treatment modification process is not solely attributable to thermal effects but rather represents a synergistic interaction between non-thermal and thermal effects. Electron backscatter diffraction (EBSD) analysis reveals that PEC treatment can refine grain size and adjust the austenite-ferrite ratio. Field emission transmission electron microscopy (TEM) shows that PEC treatment facilitates dislocation movement, forming dislocation lines and walls, and promotes recrystallization nucleation. Energy dispersive X-ray spectroscopy (EDS) indicates enhanced diffusion of alloying elements, reduced austenite stability, and phase transformation under PEC treatment. This study underscores the potential of PEC treatment in advancing the mechanical performance of duplex stainless steels. The simplicity, rapidity, and low energy consumption inherent to PEC processing make it a compelling choice for manipulating these materials.</p>","PeriodicalId":703,"journal":{"name":"Metals and Materials International","volume":"31 11","pages":"3303 - 3323"},"PeriodicalIF":4.0000,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Achieving Synergistic Enhancement of Strength Ductility in 2205 Duplex Steel via Short-Time Pulse Current\",\"authors\":\"Juan Li, Chuanlong Han, Ruiyang Wang, Guanghui Zhao, Huaying Li\",\"doi\":\"10.1007/s12540-025-01948-1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The direct application of pulsed electric current (PEC) treatment to materials can induce microstructural modifications and thus improve mechanical properties compared to conventional heat treatments. Pulsed current treatments are characterized by simplicity, speed, and low energy consumption. This study explores the effects of PEC treatment at varying current densities on the mechanical properties and microstructure of 2205 duplex stainless steel. A current density of 19.5 A/mm<sup>2</sup> increases tensile strength by 36 MPa and elongation by 5.7% compared to the original rolled sample, resulting in superior mechanical properties. Comparative analysis with isothermal annealing, conducted at equivalent temperature and duration, reveals that the PEC treatment modification process is not solely attributable to thermal effects but rather represents a synergistic interaction between non-thermal and thermal effects. Electron backscatter diffraction (EBSD) analysis reveals that PEC treatment can refine grain size and adjust the austenite-ferrite ratio. Field emission transmission electron microscopy (TEM) shows that PEC treatment facilitates dislocation movement, forming dislocation lines and walls, and promotes recrystallization nucleation. Energy dispersive X-ray spectroscopy (EDS) indicates enhanced diffusion of alloying elements, reduced austenite stability, and phase transformation under PEC treatment. This study underscores the potential of PEC treatment in advancing the mechanical performance of duplex stainless steels. The simplicity, rapidity, and low energy consumption inherent to PEC processing make it a compelling choice for manipulating these materials.</p>\",\"PeriodicalId\":703,\"journal\":{\"name\":\"Metals and Materials International\",\"volume\":\"31 11\",\"pages\":\"3303 - 3323\"},\"PeriodicalIF\":4.0000,\"publicationDate\":\"2025-05-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Metals and Materials International\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12540-025-01948-1\",\"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":"Metals and Materials International","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12540-025-01948-1","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}
Achieving Synergistic Enhancement of Strength Ductility in 2205 Duplex Steel via Short-Time Pulse Current
The direct application of pulsed electric current (PEC) treatment to materials can induce microstructural modifications and thus improve mechanical properties compared to conventional heat treatments. Pulsed current treatments are characterized by simplicity, speed, and low energy consumption. This study explores the effects of PEC treatment at varying current densities on the mechanical properties and microstructure of 2205 duplex stainless steel. A current density of 19.5 A/mm2 increases tensile strength by 36 MPa and elongation by 5.7% compared to the original rolled sample, resulting in superior mechanical properties. Comparative analysis with isothermal annealing, conducted at equivalent temperature and duration, reveals that the PEC treatment modification process is not solely attributable to thermal effects but rather represents a synergistic interaction between non-thermal and thermal effects. Electron backscatter diffraction (EBSD) analysis reveals that PEC treatment can refine grain size and adjust the austenite-ferrite ratio. Field emission transmission electron microscopy (TEM) shows that PEC treatment facilitates dislocation movement, forming dislocation lines and walls, and promotes recrystallization nucleation. Energy dispersive X-ray spectroscopy (EDS) indicates enhanced diffusion of alloying elements, reduced austenite stability, and phase transformation under PEC treatment. This study underscores the potential of PEC treatment in advancing the mechanical performance of duplex stainless steels. The simplicity, rapidity, and low energy consumption inherent to PEC processing make it a compelling choice for manipulating these materials.
期刊介绍:
Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.