{"title":"实现具有出色的高温抗氧化性和机械性能的 (TiZrTaNbCr)C/Zr 合金钎焊接头","authors":"","doi":"10.1016/j.matchar.2024.114338","DOIUrl":null,"url":null,"abstract":"<div><p>High entropy carbide ceramics showed outstanding high-temperature oxidation resistance and high-temperature mechanical property, showing a great application potential in nuclear reactor cladding materials. This work proposed a brazing technology to realize the connection of (TiZrTaNbCr)C/Zr-4 brazed joint by Ni-based filler, which exhibited an outstanding high-temperature oxidation resistance and mechanical property. The interface microstructure and phase compositions of the (TiZrTaNbCr)C/Zr-4 joint were investigated. The brazing seam was primarily composed of Zr(s,s), Zr<sub>2</sub>Ni and ZrCr<sub>2</sub>. The ZrC and Cr<sub>23</sub>C<sub>6</sub> interface reaction layer and the diffusion of Ni elements ensured the interface bonding. Different to previous researches, the second phase of Cr<sub>23</sub>C<sub>6</sub> was observed in the ZrC reaction layer, improving the strength of interface reaction layer. As a result, a highest shear strength of 105 MPa was achieved at the (TiZrTaNbCr)C/Zr-4 brazed joint. Furthermore, the high temperature shear strength at 800 °C of (TiZrTaNbCr)C/Zr-4 joint was 91 MPa, maintaining 87 % of the room-temperature shear strength. Compared to Zr-4 alloy, the (TiZrTaNbCr)C and BNi-2 filler showed an outstanding oxidation resistance, and the shear strength of the joint was maintained 67 % after oxidized at 900 °C for 8 h.</p></div>","PeriodicalId":18727,"journal":{"name":"Materials Characterization","volume":null,"pages":null},"PeriodicalIF":4.8000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Achieving (TiZrTaNbCr)C/Zr alloy brazed joints with outstanding high-temperature oxidation resistance and mechanical property\",\"authors\":\"\",\"doi\":\"10.1016/j.matchar.2024.114338\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>High entropy carbide ceramics showed outstanding high-temperature oxidation resistance and high-temperature mechanical property, showing a great application potential in nuclear reactor cladding materials. This work proposed a brazing technology to realize the connection of (TiZrTaNbCr)C/Zr-4 brazed joint by Ni-based filler, which exhibited an outstanding high-temperature oxidation resistance and mechanical property. The interface microstructure and phase compositions of the (TiZrTaNbCr)C/Zr-4 joint were investigated. The brazing seam was primarily composed of Zr(s,s), Zr<sub>2</sub>Ni and ZrCr<sub>2</sub>. The ZrC and Cr<sub>23</sub>C<sub>6</sub> interface reaction layer and the diffusion of Ni elements ensured the interface bonding. Different to previous researches, the second phase of Cr<sub>23</sub>C<sub>6</sub> was observed in the ZrC reaction layer, improving the strength of interface reaction layer. As a result, a highest shear strength of 105 MPa was achieved at the (TiZrTaNbCr)C/Zr-4 brazed joint. Furthermore, the high temperature shear strength at 800 °C of (TiZrTaNbCr)C/Zr-4 joint was 91 MPa, maintaining 87 % of the room-temperature shear strength. Compared to Zr-4 alloy, the (TiZrTaNbCr)C and BNi-2 filler showed an outstanding oxidation resistance, and the shear strength of the joint was maintained 67 % after oxidized at 900 °C for 8 h.</p></div>\",\"PeriodicalId\":18727,\"journal\":{\"name\":\"Materials Characterization\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.8000,\"publicationDate\":\"2024-09-05\",\"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/S1044580324007198\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Characterization","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1044580324007198","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}
Achieving (TiZrTaNbCr)C/Zr alloy brazed joints with outstanding high-temperature oxidation resistance and mechanical property
High entropy carbide ceramics showed outstanding high-temperature oxidation resistance and high-temperature mechanical property, showing a great application potential in nuclear reactor cladding materials. This work proposed a brazing technology to realize the connection of (TiZrTaNbCr)C/Zr-4 brazed joint by Ni-based filler, which exhibited an outstanding high-temperature oxidation resistance and mechanical property. The interface microstructure and phase compositions of the (TiZrTaNbCr)C/Zr-4 joint were investigated. The brazing seam was primarily composed of Zr(s,s), Zr2Ni and ZrCr2. The ZrC and Cr23C6 interface reaction layer and the diffusion of Ni elements ensured the interface bonding. Different to previous researches, the second phase of Cr23C6 was observed in the ZrC reaction layer, improving the strength of interface reaction layer. As a result, a highest shear strength of 105 MPa was achieved at the (TiZrTaNbCr)C/Zr-4 brazed joint. Furthermore, the high temperature shear strength at 800 °C of (TiZrTaNbCr)C/Zr-4 joint was 91 MPa, maintaining 87 % of the room-temperature shear strength. Compared to Zr-4 alloy, the (TiZrTaNbCr)C and BNi-2 filler showed an outstanding oxidation resistance, and the shear strength of the joint was maintained 67 % after oxidized at 900 °C for 8 h.
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.