{"title":"使用铌中间膜的 Al0.3CoCrFeNi 高熵合金的接触反应钎焊机理","authors":"Yu Lei, Yi-nan Li, Xiao-guo Song, Sheng-peng Hu, Wei-min Long, Hai-chuan Shi, Zu-bin Chen","doi":"10.1007/s42243-024-01314-2","DOIUrl":null,"url":null,"abstract":"<p>The contact-reactive brazing of Al<sub>0.3</sub>CoCrFeNi high-entropy alloys with a Nb interlayer was researched. The effects of Nb thickness and brazing temperature on the interfacial microstructure and mechanical properties of Al<sub>0.3</sub>CoCrFeNi joints were investigated. The results show that with Nb thickness increasing from 10 to 100 μm, the average width of Al<sub>0.3</sub>CoCrFeNi joints is increased from 127 to 492 μm and the erosion volume of Al<sub>0.3</sub>CoCrFeNi base metals (BMs) by face-centered cubic-Nb eutectic liquid is enlarged accordingly. With increasing brazing temperature from 1280 to 1360 °C, the intergranular penetration of eutectic liquid into Al<sub>0.3</sub>CoCrFeNi BMs becomes more severe and lamellar Laves phase is broken-up and spherized. The shear strength of joint is increased gradually from 374 to 486 MPa and then decreased to 475 MPa. The maximum shear strength value of 486 MPa is obtained when brazing at 1340 °C for 10 min, reaching about 78% of the shear strength of Al<sub>0.3</sub>CoCrFeNi BMs. Besides, the brazing mechanism was analyzed in details.</p>","PeriodicalId":16151,"journal":{"name":"Journal of Iron and Steel Research International","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Contact-reactive brazing mechanism of Al0.3CoCrFeNi high-entropy alloys using a niobium interlayer\",\"authors\":\"Yu Lei, Yi-nan Li, Xiao-guo Song, Sheng-peng Hu, Wei-min Long, Hai-chuan Shi, Zu-bin Chen\",\"doi\":\"10.1007/s42243-024-01314-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The contact-reactive brazing of Al<sub>0.3</sub>CoCrFeNi high-entropy alloys with a Nb interlayer was researched. The effects of Nb thickness and brazing temperature on the interfacial microstructure and mechanical properties of Al<sub>0.3</sub>CoCrFeNi joints were investigated. The results show that with Nb thickness increasing from 10 to 100 μm, the average width of Al<sub>0.3</sub>CoCrFeNi joints is increased from 127 to 492 μm and the erosion volume of Al<sub>0.3</sub>CoCrFeNi base metals (BMs) by face-centered cubic-Nb eutectic liquid is enlarged accordingly. With increasing brazing temperature from 1280 to 1360 °C, the intergranular penetration of eutectic liquid into Al<sub>0.3</sub>CoCrFeNi BMs becomes more severe and lamellar Laves phase is broken-up and spherized. The shear strength of joint is increased gradually from 374 to 486 MPa and then decreased to 475 MPa. The maximum shear strength value of 486 MPa is obtained when brazing at 1340 °C for 10 min, reaching about 78% of the shear strength of Al<sub>0.3</sub>CoCrFeNi BMs. Besides, the brazing mechanism was analyzed in details.</p>\",\"PeriodicalId\":16151,\"journal\":{\"name\":\"Journal of Iron and Steel Research International\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-08-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Iron and Steel Research International\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s42243-024-01314-2\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Iron and Steel Research International","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s42243-024-01314-2","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Contact-reactive brazing mechanism of Al0.3CoCrFeNi high-entropy alloys using a niobium interlayer
The contact-reactive brazing of Al0.3CoCrFeNi high-entropy alloys with a Nb interlayer was researched. The effects of Nb thickness and brazing temperature on the interfacial microstructure and mechanical properties of Al0.3CoCrFeNi joints were investigated. The results show that with Nb thickness increasing from 10 to 100 μm, the average width of Al0.3CoCrFeNi joints is increased from 127 to 492 μm and the erosion volume of Al0.3CoCrFeNi base metals (BMs) by face-centered cubic-Nb eutectic liquid is enlarged accordingly. With increasing brazing temperature from 1280 to 1360 °C, the intergranular penetration of eutectic liquid into Al0.3CoCrFeNi BMs becomes more severe and lamellar Laves phase is broken-up and spherized. The shear strength of joint is increased gradually from 374 to 486 MPa and then decreased to 475 MPa. The maximum shear strength value of 486 MPa is obtained when brazing at 1340 °C for 10 min, reaching about 78% of the shear strength of Al0.3CoCrFeNi BMs. Besides, the brazing mechanism was analyzed in details.
期刊介绍：
Publishes critically reviewed original research of archival significance
Covers hydrometallurgy, pyrometallurgy, electrometallurgy, transport phenomena, process control, physical chemistry, solidification, mechanical working, solid state reactions, materials processing, and more
Includes welding & joining, surface treatment, mathematical modeling, corrosion, wear and abrasion
Journal of Iron and Steel Research International publishes original papers and occasional invited reviews on aspects of research and technology in the process metallurgy and metallic materials. Coverage emphasizes the relationships among the processing, structure and properties of metals, including advanced steel materials, superalloy, intermetallics, metallic functional materials, powder metallurgy, structural titanium alloy, composite steel materials, high entropy alloy, amorphous alloys, metallic nanomaterials, etc..
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