Yunlong Ding, Wenjie Shao, Zhiguo Zhuang, Bingyang Liu, Bing Han
{"title":"保温时间对 T2Cu/Al1060 扩散接合层微观结构演变和性能的影响","authors":"Yunlong Ding, Wenjie Shao, Zhiguo Zhuang, Bingyang Liu, Bing Han","doi":"10.1007/s40194-024-01838-x","DOIUrl":null,"url":null,"abstract":"<div><p>In this paper, the welding of T2 copper and Al1060 was realized by vacuum diffusion welding process. The microstructure evolution, mechanical properties, and corrosion resistance of Cu/Al diffusion bonding layer were explored. The results show that intermetallic compounds Al<sub>2</sub>Cu, AlCu, and Al<sub>4</sub>Cu<sub>9</sub> generate at the joint under the welding condition of holding for 60 min at 530 °C. When the holding time reaches 90 min, a new phase of Al<sub>2</sub>Cu<sub>3</sub> generates, and the diffusion bonding layer evolves into a four-layer structure. The thickness of diffusion layer increases with the extension of holding time and is affected by the body diffusion. The shear strength of the joint increases first and then decreases with the extension of holding time. The maximum shear strength of 20.91 MPa can be obtained under the holding time condition of 60 min, and fracture mainly occurs between Al<sub>2</sub>Cu and AlCu phases. Nanoindentation hardness and elastic modulus of intermetallic compound phase are much higher than those of copper and aluminum matrix. Specifically, Al<sub>4</sub>Cu<sub>9</sub> phase exhibits the largest nanoindentation hardness and elastic modulus of 11.062 GPa and 132.8 GPa. The corrosion resistance of diffusion bonding layers is significantly different from that of the base material. Compared with copper, the corrosion potential of each diffusion layer and aluminum matrix is relatively lower. The corrosion rates of diffusion layers and base materials are in descending order of Al > Al<sub>2</sub>Cu > AlCu > Al<sub>4</sub>Cu<sub>9</sub> > Cu.</p></div>","PeriodicalId":809,"journal":{"name":"Welding in the World","volume":"68 11","pages":"2975 - 2984"},"PeriodicalIF":2.4000,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of holding time on microstructure evolution and properties of T2Cu/Al1060 diffusion bonding layer\",\"authors\":\"Yunlong Ding, Wenjie Shao, Zhiguo Zhuang, Bingyang Liu, Bing Han\",\"doi\":\"10.1007/s40194-024-01838-x\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this paper, the welding of T2 copper and Al1060 was realized by vacuum diffusion welding process. The microstructure evolution, mechanical properties, and corrosion resistance of Cu/Al diffusion bonding layer were explored. The results show that intermetallic compounds Al<sub>2</sub>Cu, AlCu, and Al<sub>4</sub>Cu<sub>9</sub> generate at the joint under the welding condition of holding for 60 min at 530 °C. When the holding time reaches 90 min, a new phase of Al<sub>2</sub>Cu<sub>3</sub> generates, and the diffusion bonding layer evolves into a four-layer structure. The thickness of diffusion layer increases with the extension of holding time and is affected by the body diffusion. The shear strength of the joint increases first and then decreases with the extension of holding time. The maximum shear strength of 20.91 MPa can be obtained under the holding time condition of 60 min, and fracture mainly occurs between Al<sub>2</sub>Cu and AlCu phases. Nanoindentation hardness and elastic modulus of intermetallic compound phase are much higher than those of copper and aluminum matrix. Specifically, Al<sub>4</sub>Cu<sub>9</sub> phase exhibits the largest nanoindentation hardness and elastic modulus of 11.062 GPa and 132.8 GPa. The corrosion resistance of diffusion bonding layers is significantly different from that of the base material. Compared with copper, the corrosion potential of each diffusion layer and aluminum matrix is relatively lower. The corrosion rates of diffusion layers and base materials are in descending order of Al > Al<sub>2</sub>Cu > AlCu > Al<sub>4</sub>Cu<sub>9</sub> > Cu.</p></div>\",\"PeriodicalId\":809,\"journal\":{\"name\":\"Welding in the World\",\"volume\":\"68 11\",\"pages\":\"2975 - 2984\"},\"PeriodicalIF\":2.4000,\"publicationDate\":\"2024-09-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Welding in the World\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40194-024-01838-x\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"METALLURGY & METALLURGICAL ENGINEERING\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Welding in the World","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s40194-024-01838-x","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
Effect of holding time on microstructure evolution and properties of T2Cu/Al1060 diffusion bonding layer
In this paper, the welding of T2 copper and Al1060 was realized by vacuum diffusion welding process. The microstructure evolution, mechanical properties, and corrosion resistance of Cu/Al diffusion bonding layer were explored. The results show that intermetallic compounds Al2Cu, AlCu, and Al4Cu9 generate at the joint under the welding condition of holding for 60 min at 530 °C. When the holding time reaches 90 min, a new phase of Al2Cu3 generates, and the diffusion bonding layer evolves into a four-layer structure. The thickness of diffusion layer increases with the extension of holding time and is affected by the body diffusion. The shear strength of the joint increases first and then decreases with the extension of holding time. The maximum shear strength of 20.91 MPa can be obtained under the holding time condition of 60 min, and fracture mainly occurs between Al2Cu and AlCu phases. Nanoindentation hardness and elastic modulus of intermetallic compound phase are much higher than those of copper and aluminum matrix. Specifically, Al4Cu9 phase exhibits the largest nanoindentation hardness and elastic modulus of 11.062 GPa and 132.8 GPa. The corrosion resistance of diffusion bonding layers is significantly different from that of the base material. Compared with copper, the corrosion potential of each diffusion layer and aluminum matrix is relatively lower. The corrosion rates of diffusion layers and base materials are in descending order of Al > Al2Cu > AlCu > Al4Cu9 > Cu.
期刊介绍:
The journal Welding in the World publishes authoritative papers on every aspect of materials joining, including welding, brazing, soldering, cutting, thermal spraying and allied joining and fabrication techniques.