{"title":"SS316与Ni201异种金属连接的CO2激光研究","authors":"G. K. Kumar, T. Kannan, R. S. Jayaram","doi":"10.37896/pd91.4/91419","DOIUrl":null,"url":null,"abstract":"Dissimilar metal welded joints are commonly used in the nuclear sector to connect pressure vessel ferritic steel pipe nozzles to austenitic stainless steel safe-end pipes. Stainless Steel 316 and Nickel 201 dissimilar joints are focused on by utilising a 4KW CO 2 laser welding machine in this study. Mechanical parameters such as ultimate tensile strength (UTS) and hardness survey were used to identify a high-quality welded junction. The tensile stress was found to be 412 Mpa, and the fracture occurred outside the weld zone on the nickel side. The tensile test shows that the weld was strong enough to break through the base metal. The profile of the weld bead is critical to ensure that it is a strong weld junction. Some delta ferrite has been observed in the interdendritic zone in microstructure studies, along with columnar grains during solidification, all of which point to successful fusing in the joint between the two dissimilar metals. With the 4 kW CO 2 laser welding machine, it is possible to join materials that are completely different from each other.","PeriodicalId":20006,"journal":{"name":"Periodico Di Mineralogia","volume":"39 1","pages":""},"PeriodicalIF":1.2000,"publicationDate":"2022-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"CO2 Laser Study of SS316 and Ni201 Dissimilar Metal Joining\",\"authors\":\"G. K. Kumar, T. Kannan, R. S. Jayaram\",\"doi\":\"10.37896/pd91.4/91419\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Dissimilar metal welded joints are commonly used in the nuclear sector to connect pressure vessel ferritic steel pipe nozzles to austenitic stainless steel safe-end pipes. Stainless Steel 316 and Nickel 201 dissimilar joints are focused on by utilising a 4KW CO 2 laser welding machine in this study. Mechanical parameters such as ultimate tensile strength (UTS) and hardness survey were used to identify a high-quality welded junction. The tensile stress was found to be 412 Mpa, and the fracture occurred outside the weld zone on the nickel side. The tensile test shows that the weld was strong enough to break through the base metal. The profile of the weld bead is critical to ensure that it is a strong weld junction. Some delta ferrite has been observed in the interdendritic zone in microstructure studies, along with columnar grains during solidification, all of which point to successful fusing in the joint between the two dissimilar metals. With the 4 kW CO 2 laser welding machine, it is possible to join materials that are completely different from each other.\",\"PeriodicalId\":20006,\"journal\":{\"name\":\"Periodico Di Mineralogia\",\"volume\":\"39 1\",\"pages\":\"\"},\"PeriodicalIF\":1.2000,\"publicationDate\":\"2022-04-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Periodico Di Mineralogia\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.37896/pd91.4/91419\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Periodico Di Mineralogia","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.37896/pd91.4/91419","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
CO2 Laser Study of SS316 and Ni201 Dissimilar Metal Joining
Dissimilar metal welded joints are commonly used in the nuclear sector to connect pressure vessel ferritic steel pipe nozzles to austenitic stainless steel safe-end pipes. Stainless Steel 316 and Nickel 201 dissimilar joints are focused on by utilising a 4KW CO 2 laser welding machine in this study. Mechanical parameters such as ultimate tensile strength (UTS) and hardness survey were used to identify a high-quality welded junction. The tensile stress was found to be 412 Mpa, and the fracture occurred outside the weld zone on the nickel side. The tensile test shows that the weld was strong enough to break through the base metal. The profile of the weld bead is critical to ensure that it is a strong weld junction. Some delta ferrite has been observed in the interdendritic zone in microstructure studies, along with columnar grains during solidification, all of which point to successful fusing in the joint between the two dissimilar metals. With the 4 kW CO 2 laser welding machine, it is possible to join materials that are completely different from each other.
期刊介绍:
Periodico di Mineralogia is an international peer-reviewed Open Access journal publishing Research Articles, Letters and Reviews in Mineralogy, Crystallography, Geochemistry, Ore Deposits, Petrology, Volcanology and applied topics on Environment, Archaeometry and Cultural Heritage. The journal aims at encouraging scientists to publish their experimental and theoretical results in as much detail as possible. Accordingly, there is no restriction on article length. Additional data may be hosted on the web sites as Supplementary Information. The journal does not have article submission and processing charges. Colour is free of charges both on line and printed and no Open Access fees are requested. Short publication time is assured.
Periodico di Mineralogia is property of Sapienza Università di Roma and is published, both online and printed, three times a year.