The possible dominant factors in the mechanical properties of the metallic substrates of various commercial REBCO tapes

IF 1.3 3区物理与天体物理 Q4 PHYSICS, APPLIED

Physica C-superconductivity and Its Applications Pub Date : 2025-01-21 DOI:10.1016/j.physc.2024.1354643

Yan Liu , Hongli Suo , Zili Zhang , Yaotang Ji , Lei Wang , Jianhua Liu , Qiuliang Wang

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引用次数: 0

Abstract

The metallic substrate of commercial REBCO tapes from eight different manufacturers has been systematically investigated. Tensile properties at both room temperature and 77 K were measured. The grain morphology, size, orientation, dislocation density, and internal stress of the grains on both the cross-section and surface of each tape were studied using EBSD. After an in-depth analysis of the relationship between yield strength and grain size, elemental composition, dislocation density, and twin boundaries, it has been preliminarily confirmed that dislocation density is a possible dominant factor in determining the yield strength of the metallic substrate of commercial REBCO tapes.The kernel average misorientation value (KAM) of the cross-section could be one of the best indicators for evaluating yield strength. Based on this analysis, potential methods for enhancing yield strength are also briefly discussed. This investigation aims to provide valuable insights for researchers to better understand the mechanical properties of REBCO tape.

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影响各种商用 REBCO 胶带金属基材机械性能的可能主要因素

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来源期刊

Physica C-superconductivity and Its Applications 物理-物理：应用

CiteScore

2.70

自引率

11.80%

发文量

102

审稿时长

66 days

期刊介绍： Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. Topics include discovery of new superconducting materials and elucidation of their mechanisms, physics of vortex matter, enhancement of critical properties of superconductors, identification of novel properties and processing methods that improve their performance and promote new routes to applications of superconductivity. The main goal of the journal is to publish: 1. Papers that substantially increase the understanding of the fundamental aspects and mechanisms of superconductivity and vortex matter through theoretical and experimental methods. 2. Papers that report on novel physical properties and processing of materials that substantially enhance their critical performance. 3. Papers that promote new or improved routes to applications of superconductivity and/or superconducting materials, and proof-of-concept novel proto-type superconducting devices. The editors of the journal will select papers that are well written and based on thorough research that provide truly novel insights.