Evaluation of microstructures and mechanical properties of friction stir welded lap joints of Inconel 600/SS 400 |
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| Affiliation: | 1. Korea Institute of Industrial Technology, 7-47 Songdo-Dong, Yeonsu-gu, Incheon 406-840, Republic of Korea;2. Joining and Welding Research Institute, 11-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan;1. Mechanical & Automotive Engineering, Faculty of Engineering and Computing, Coventry University, Priory Street, Coventry, UK;2. Dublin Institute of Technology, Centre for Elastomer Research (CER), Lurgan Street, Dublin 1, Ireland;3. School of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham, UK;1. Key Laboratory for Electromagnetic Field Assisted Processing of Novel Materials, Moscow Engineering Physics Institute, Russia;2. Mechanical Engineering, San Diego States University, USA;1. Department of Physical Metallurgy, Spanish National Center for Metallurgical Research (CENIM-CSIC), Avda. Gregorio del Amo 8, E-28040 Madrid, Spain;2. Robert Bosch GmbH, Materials and Processing Department, Renningen, 70465 Stuttgart, Germany;3. University of Kaiserslautern, Materials Testing, Gottlieb-Damiler-Straße, 67663 Kaiserslautern, Germany;4. Ascometal-CREAS (Research Centre) Metallurgy, BP 70045, Hagondange Cedex 57301, France;1. Centre d''Investigations Cliniques (CIC) 1427, INSERM, Hôpital Saint-Louis, Université de Paris, Paris, France;2. Laboratoire de Biologie Cellulaire, Hôpital Saint-Louis, Assistance Publique–Hôpitaux de Paris (AP-HP), Paris, France;3. Institut de Recherche Saint-Louis (IRSL), Unité 1131 INSERM, Université de Paris, Paris, France;4. Laboratoire d''Excellence GR-Ex, Paris, France;5. Hematology, Azienda Socio-Sanitaria Territoriale (ASST) Sette Laghi, Ospedale di Circolo, Varese, Italy;6. Hôpital Beaujon, AP-HP, Service d''Hépatologie, Pôle des Maladies de l''Appareil Digestif, Département Hospitalo-Universitaire (DHU) Unity, Clichy, France;7. Centre de Référence des Maladies Vasculaires du Foie, Unité 1149 INSERM, Paris, France;8. Centre de Recherche sur l''Inflammation (CRI), Université de Paris, Paris, France;9. European Reference Network (ERN) Rare Liver Diseases, Clichy, France;10. Gastroenterology and Hepatology, Côte de la Nacre Hospital, University Hospital, Caen, France;11. Hepatology, Unité 1053 INSERM, Haut-Lévêque Hospital, University Hospital of Bordeaux, Pessac, France;12. Gastroenterology and Hepatology, Charles Nicolle University Hospital, Rouen, France;13. Gastroenterology and Hepatology, Rangueil University Hospital, Toulouse, France;14. Cytogenetics and Medical Genetics Laboratory, ASST Sette Laghi, Ospedale di Circolo, Varese Italy;;15. Dipartimento di Medicina e Chirurgia, University of Insubria, Varese, Italy;1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;2. Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China |
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| Abstract: | The microstructures and mechanical properties of friction stir welded Inconel 600 and SS 400 lap joints were evaluated in this study. Friction stir welding was carried out at a tool rotation speed of 200 rpm and a welding speed of 100 mm/min. Application of friction stir welding was notably effective in reducing the grain size of the stir zone, as a result, the average grain size of Inconel 600 was reduced from 20 μm in the base material to 8.5 μm in the stir zone. The joint interface between Inconel 600 and SS 400 was soundly welded without voids and cracks, and MC carbides with a size of 50 nm were partially formed in the region of the lap joint interface in Inconel 600. In addition, a hook from SS 400 was formed on the advancing side of the Inconel 600 alloy, which directly affected an increase in the peel strength of the weld. In this study, we systematically discussed the effect of friction stir welding on the evolution of the microstructures and mechanical properties of friction stir lap jointed Inconel 600 and SS 400. |
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