Resistance upsetting welding of Zr-Sn/Zr-Nb alloy: Material flow behavior, bonding mechanism and performance in extreme environments

IF 4.8 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization Pub Date : 2025-05-02 DOI:10.1016/j.matchar.2025.115111

Yuanbo Bi , Bingbing Chen , Zhiqiang Sun , Zhongfeng Xu , Li Lu , Xueliang Zhang , Zhen Luo

{"title":"Resistance upsetting welding of Zr-Sn/Zr-Nb alloy: Material flow behavior, bonding mechanism and performance in extreme environments","authors":"Yuanbo Bi , Bingbing Chen , Zhiqiang Sun , Zhongfeng Xu , Li Lu , Xueliang Zhang , Zhen Luo","doi":"10.1016/j.matchar.2025.115111","DOIUrl":null,"url":null,"abstract":"<div><div>In the process of resistance upsetting welding (RUW) of Zr-Sn/Zr-Nb alloy in nuclear fuel rods, the quality of the joint is unstable, the bonding is not strong and the sealing is poor because of the inaccurate control of the parameters such as forging forces and current. The effects of different forging forces on the joint were investigated through microstructure characterization and thermal-electric-mechanical coupling numerical simulation. By revealing the evolution of grain morphology, twin density, material flow, grain boundary proportion, so as to explain the plastic deformation characteristics and microstructure evolution of joints under large current, local high strain and high temperature. The comprehensive properties of the joint are evaluated by water corrosion, bursting test and tensile test. Water corrosion only thickens the oxide layer near the self-healing line, with the thickness of the oxide layer in other areas being similar to that of the base metal. The joints with different forging forces fractured in the area far from the weld regardless of the bursting or tensile tests. The large forging force accelerates the material flow of the joint, resulting in a rapid narrowing and elongation of the weld nugget compared to the low forging force.</div></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":"225 ","pages":"Article 115111"},"PeriodicalIF":4.8000,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Characterization","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1044580325004000","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CHARACTERIZATION & TESTING","Score":null,"Total":0}

引用次数: 0

Abstract

In the process of resistance upsetting welding (RUW) of Zr-Sn/Zr-Nb alloy in nuclear fuel rods, the quality of the joint is unstable, the bonding is not strong and the sealing is poor because of the inaccurate control of the parameters such as forging forces and current. The effects of different forging forces on the joint were investigated through microstructure characterization and thermal-electric-mechanical coupling numerical simulation. By revealing the evolution of grain morphology, twin density, material flow, grain boundary proportion, so as to explain the plastic deformation characteristics and microstructure evolution of joints under large current, local high strain and high temperature. The comprehensive properties of the joint are evaluated by water corrosion, bursting test and tensile test. Water corrosion only thickens the oxide layer near the self-healing line, with the thickness of the oxide layer in other areas being similar to that of the base metal. The joints with different forging forces fractured in the area far from the weld regardless of the bursting or tensile tests. The large forging force accelerates the material flow of the joint, resulting in a rapid narrowing and elongation of the weld nugget compared to the low forging force.

查看原文本刊更多论文

Zr-Sn/Zr-Nb合金抗镦粗焊接：极端环境下材料流动行为、结合机理及性能

在核燃料棒Zr-Sn/Zr-Nb合金电阻镦粗焊接过程中，由于锻造力和电流等参数控制不准确，导致接头质量不稳定，粘结不牢固，密封性差。通过组织表征和热电耦合数值模拟研究了不同锻造力对接头的影响。通过揭示晶粒形貌、孪晶密度、物质流动、晶界比例的演变，从而解释大电流、局部高应变和高温作用下接头的塑性变形特征和组织演变。通过水腐蚀试验、破裂试验和拉伸试验对接头的综合性能进行了评价。水腐蚀仅使自愈线附近的氧化层增厚，其他区域的氧化层厚度与母材相近。无论爆裂或拉伸试验，不同锻造力的接头都在远离焊缝的区域发生断裂。与低锻造力相比，大锻造力加速了接头的物质流动，导致焊缝核的迅速缩小和延伸。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials Characterization 工程技术-材料科学：表征与测试

CiteScore

7.60

自引率

8.50%

发文量

746

审稿时长

36 days

期刊介绍： Materials Characterization features original articles and state-of-the-art reviews on theoretical and practical aspects of the structure and behaviour of materials. The Journal focuses on all characterization techniques, including all forms of microscopy (light, electron, acoustic, etc.,) and analysis (especially microanalysis and surface analytical techniques). Developments in both this wide range of techniques and their application to the quantification of the microstructure of materials are essential facets of the Journal. The Journal provides the Materials Scientist/Engineer with up-to-date information on many types of materials with an underlying theme of explaining the behavior of materials using novel approaches. Materials covered by the journal include: Metals & Alloys Ceramics Nanomaterials Biomedical materials Optical materials Composites Natural Materials.