Dmitry Terentyev , Chao Yin , Chih-Cheng Chang , Ze Chen , Shifeng Mao , Minyou Ye
{"title":"符合iter标准和交叉轧制钨等级拉伸性能的各向异性","authors":"Dmitry Terentyev , Chao Yin , Chih-Cheng Chang , Ze Chen , Shifeng Mao , Minyou Ye","doi":"10.1016/j.fusengdes.2025.115457","DOIUrl":null,"url":null,"abstract":"<div><div>This study experimentally investigates the tensile properties of five tungsten grades for fusion applications at temperatures of 300 °C, 500 °C, and 800 °C, focusing on the influence of microstructural characteristics such as texture, grain shape aspect ratio, and grain boundary density. Texture analysis based on electron backscatter diffraction highlights diverse components in all tungsten grades. The Taylor factor and strength anisotropy variations suggest that texture is not the sole determinant of strength. Grain shape aspect ratio (short-to-long axis ratio) affects strength anisotropy, increasing at 300 °C and decreasing at 500 °C, converging at 800 °C. The anisotropy of uniform elongation and post-necking toughness decreases with grain shape aspect ratio at 300 °C, transitioning at 500 °C, and nearly disappears at 800 °C. Yield strength correlates with high-angle grain boundary density at 300 °C and 500 °C, which indicates that dislocation-grain boundary interaction is a thermally activated process in this temperature range.</div></div>","PeriodicalId":55133,"journal":{"name":"Fusion Engineering and Design","volume":"222 ","pages":"Article 115457"},"PeriodicalIF":2.0000,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Anisotropy in tensile properties of ITER-conformant and cross-rolled tungsten grades\",\"authors\":\"Dmitry Terentyev , Chao Yin , Chih-Cheng Chang , Ze Chen , Shifeng Mao , Minyou Ye\",\"doi\":\"10.1016/j.fusengdes.2025.115457\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study experimentally investigates the tensile properties of five tungsten grades for fusion applications at temperatures of 300 °C, 500 °C, and 800 °C, focusing on the influence of microstructural characteristics such as texture, grain shape aspect ratio, and grain boundary density. Texture analysis based on electron backscatter diffraction highlights diverse components in all tungsten grades. The Taylor factor and strength anisotropy variations suggest that texture is not the sole determinant of strength. Grain shape aspect ratio (short-to-long axis ratio) affects strength anisotropy, increasing at 300 °C and decreasing at 500 °C, converging at 800 °C. The anisotropy of uniform elongation and post-necking toughness decreases with grain shape aspect ratio at 300 °C, transitioning at 500 °C, and nearly disappears at 800 °C. Yield strength correlates with high-angle grain boundary density at 300 °C and 500 °C, which indicates that dislocation-grain boundary interaction is a thermally activated process in this temperature range.</div></div>\",\"PeriodicalId\":55133,\"journal\":{\"name\":\"Fusion Engineering and Design\",\"volume\":\"222 \",\"pages\":\"Article 115457\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2025-09-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Fusion Engineering and Design\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0920379625006532\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"NUCLEAR SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fusion Engineering and Design","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0920379625006532","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
Anisotropy in tensile properties of ITER-conformant and cross-rolled tungsten grades
This study experimentally investigates the tensile properties of five tungsten grades for fusion applications at temperatures of 300 °C, 500 °C, and 800 °C, focusing on the influence of microstructural characteristics such as texture, grain shape aspect ratio, and grain boundary density. Texture analysis based on electron backscatter diffraction highlights diverse components in all tungsten grades. The Taylor factor and strength anisotropy variations suggest that texture is not the sole determinant of strength. Grain shape aspect ratio (short-to-long axis ratio) affects strength anisotropy, increasing at 300 °C and decreasing at 500 °C, converging at 800 °C. The anisotropy of uniform elongation and post-necking toughness decreases with grain shape aspect ratio at 300 °C, transitioning at 500 °C, and nearly disappears at 800 °C. Yield strength correlates with high-angle grain boundary density at 300 °C and 500 °C, which indicates that dislocation-grain boundary interaction is a thermally activated process in this temperature range.
期刊介绍:
The journal accepts papers about experiments (both plasma and technology), theory, models, methods, and designs in areas relating to technology, engineering, and applied science aspects of magnetic and inertial fusion energy. Specific areas of interest include: MFE and IFE design studies for experiments and reactors; fusion nuclear technologies and materials, including blankets and shields; analysis of reactor plasmas; plasma heating, fuelling, and vacuum systems; drivers, targets, and special technologies for IFE, controls and diagnostics; fuel cycle analysis and tritium reprocessing and handling; operations and remote maintenance of reactors; safety, decommissioning, and waste management; economic and environmental analysis of components and systems.