Constitutive behaviour study of Ba x K1- x Fe2As2 iron-based superconducting powder

被引：1

作者：

Xia, Xi ^{[1
]}

Zhu, Yanchang ^{[2
,3
,4
]}

Zhu, Chundong ^{[1
,5
]}

Han, Meng ^{[2
]}

Liu, Cong ^{[2
,4
]}

Wang, Dongliang ^{[2
,3
,4
]}

Zhang, Xianping ^{[2
,3
,4
]}

Ma, Yanwei ^{[2
,3
,4
]}

机构：

[1] Wuhan Univ Technol, Sch Mat Sci & Engn, Wuhan 430070, Peoples R China

[2] Chinese Acad Sci, Inst Elect Engn, Key Lab Appl Superconduct, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Inst Elect Engn & Adv Electromagnet Drive Technol, Qilu Zhongke, Jinan 250013, Peoples R China

[5] Suizhou WUT Ind Res Inst, Suizhou 441300, Peoples R China

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2023年 / 36卷 / 04期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

iron-based superconductor; BaK-122; constitutive behaviour; Drucker-Prager; numerical simulation; DEFORMATION;

D O I：

10.1088/1361-6668/acbe73

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In order to simulate the preparation process of Ba (x) K1-x Fe2As2 (BaK-122) iron-based superconducting (IBS) wires and tapes and formulate appropriate forming process for practical production, it is very important to study the constitutive behaviour of BaK-122 IBS powder. However, there is little research on this aspect at present. In this paper, the constitutive behaviour of BaK-122 powder was investigated. The modified Drucker-Prager cap (DPC) model was introduced to describe the constitutive behaviour of BaK-122 powder. Uniaxial compression test, radial compression test and mould pressing test were carried out to determine the material parameters. Furthermore, the numerical simulation of pressing forming of BaK-122 powder and drawing process of BaK-122 IBS wires were carried out through the finite element simulation method. These results demonstrated that the simulations were in good agreement with the experimental results, which verified the accuracy of the model. The first proposal of this mode lays a foundation for further simulating the preparation process of BaK-122 IBS wires and tapes to guide the actual production.

引用

页数：11

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