[{"oa":"1","date_updated":"2025-10-30T13:55:08Z","author":[{"first_name":"Bahman","last_name":"Arian","id":"36287","full_name":"Arian, Bahman"},{"id":"233","full_name":"Homberg, Werner","last_name":"Homberg","first_name":"Werner"},{"last_name":"Kersting","full_name":"Kersting, Lukas","first_name":"Lukas"},{"last_name":"Trächtler","id":"552","full_name":"Trächtler, Ansgar","first_name":"Ansgar"},{"full_name":"Rozo Vasquez, Julian","last_name":"Rozo Vasquez","first_name":"Julian"},{"first_name":"Frank","full_name":"Walther, Frank","last_name":"Walther"}],"volume":54,"main_file_link":[{"url":"https://mrforum.com/product/9781644903599-127/","open_access":"1"}],"doi":"10.21741/9781644903599-127","conference":{"location":"Paestum, Italy","end_date":"2025-05-09","start_date":"2025-05-06","name":"The 28th International ESAFORM Conference on Material Forming - ESAFORM 2025"},"publication_status":"published","publication_identifier":{"issn":["2474-395X"]},"has_accepted_license":"1","citation":{"chicago":"Arian, Bahman, Werner Homberg, Lukas Kersting, Ansgar Trächtler, Julian Rozo Vasquez, and Frank Walther. “Advanced Thermomechanical Flow Forming: A Novel Approach to α’-Martensite Control for Enhanced Material Properties.” In <i>Materials Research Proceedings</i>, edited by Pierpaolo Carlone, Luigino Filice, and Domenico Umbrello, Vol. 54. Materials Research Forum LLC, 2025. <a href=\"https://doi.org/10.21741/9781644903599-127\">https://doi.org/10.21741/9781644903599-127</a>.","ieee":"B. Arian, W. Homberg, L. Kersting, A. Trächtler, J. Rozo Vasquez, and F. Walther, “Advanced thermomechanical flow forming: A novel approach to α’-martensite control for enhanced material properties,” in <i>Materials Research Proceedings</i>, Paestum, Italy, 2025, vol. 54, doi: <a href=\"https://doi.org/10.21741/9781644903599-127\">10.21741/9781644903599-127</a>.","ama":"Arian B, Homberg W, Kersting L, Trächtler A, Rozo Vasquez J, Walther F. Advanced thermomechanical flow forming: A novel approach to α’-martensite control for enhanced material properties. In: Carlone P, Filice L, Umbrello D, eds. <i>Materials Research Proceedings</i>. Vol 54. Materials Research Forum LLC; 2025. doi:<a href=\"https://doi.org/10.21741/9781644903599-127\">10.21741/9781644903599-127</a>","apa":"Arian, B., Homberg, W., Kersting, L., Trächtler, A., Rozo Vasquez, J., &#38; Walther, F. (2025). Advanced thermomechanical flow forming: A novel approach to α’-martensite control for enhanced material properties. In P. Carlone, L. Filice, &#38; D. Umbrello (Eds.), <i>Materials Research Proceedings</i> (Vol. 54). Materials Research Forum LLC. <a href=\"https://doi.org/10.21741/9781644903599-127\">https://doi.org/10.21741/9781644903599-127</a>","mla":"Arian, Bahman, et al. “Advanced Thermomechanical Flow Forming: A Novel Approach to α’-Martensite Control for Enhanced Material Properties.” <i>Materials Research Proceedings</i>, edited by Pierpaolo Carlone et al., vol. 54, Materials Research Forum LLC, 2025, doi:<a href=\"https://doi.org/10.21741/9781644903599-127\">10.21741/9781644903599-127</a>.","short":"B. Arian, W. Homberg, L. Kersting, A. Trächtler, J. Rozo Vasquez, F. Walther, in: P. Carlone, L. Filice, D. Umbrello (Eds.), Materials Research Proceedings, Materials Research Forum LLC, 2025.","bibtex":"@inproceedings{Arian_Homberg_Kersting_Trächtler_Rozo Vasquez_Walther_2025, title={Advanced thermomechanical flow forming: A novel approach to α’-martensite control for enhanced material properties}, volume={54}, DOI={<a href=\"https://doi.org/10.21741/9781644903599-127\">10.21741/9781644903599-127</a>}, booktitle={Materials Research Proceedings}, publisher={Materials Research Forum LLC}, author={Arian, Bahman and Homberg, Werner and Kersting, Lukas and Trächtler, Ansgar and Rozo Vasquez, Julian and Walther, Frank}, editor={Carlone, Pierpaolo and Filice, Luigino and Umbrello, Domenico}, year={2025} }"},"intvolume":"        54","_id":"59907","user_id":"36287","department":[{"_id":"156"},{"_id":"153"},{"_id":"241"}],"type":"conference","editor":[{"first_name":"Pierpaolo","last_name":"Carlone","full_name":"Carlone, Pierpaolo"},{"first_name":"Luigino","full_name":"Filice, Luigino","last_name":"Filice"},{"full_name":"Umbrello, Domenico","last_name":"Umbrello","first_name":"Domenico"}],"status":"public","publisher":"Materials Research Forum LLC","date_created":"2025-05-15T06:59:28Z","title":"Advanced thermomechanical flow forming: A novel approach to α’-martensite control for enhanced material properties","quality_controlled":"1","year":"2025","keyword":["Flow Forming","Thermomechanical Forming","α’-Martensite","Property Control"],"language":[{"iso":"eng"}],"publication":"Materials Research Proceedings","abstract":[{"text":"<jats:p>Abstract. Flow forming is recognized for its precision in producing rotationally symmetric components, but the use of metastable austenitic stainless steel (AISI 304L) introduces challenges due to uncontrolled strain-induced α’ martensite formation. Variations in factors such as eccentricity and batch inconsistencies lead to unpredictable microstructural profiles, limiting reproducibility [1,2]. This study addresses these issues by incorporating thermal actuators for cryogenic cooling and induction heating to regulate forming temperatures, enabling control of the α’-martensite content. Experimental investigations demonstrate that local tempering during thermomechanical reverse flow forming produces discernible variations in microstructure, affecting mechanical and magnetic properties [3]. Controlled local adjustments of α’-martensite content allow for customization of properties in seamless tubes, advancing manufacturing capabilities for complex, defect-free components. The results presented demonstrate promising strategies for implementation within the context of closed-loop property control in flow forming.</jats:p>","lang":"eng"}]},{"publication_status":"accepted","quality_controlled":"1","has_accepted_license":"1","year":"2022","place":"Braga - Portugal","citation":{"mla":"Engemann, David, and Werner Homberg. <i>Hot Spinning of Cutting Blades for Food Industry</i>.","short":"D. Engemann, W. Homberg, in: Braga - Portugal, n.d.","bibtex":"@inproceedings{Engemann_Homberg, place={Braga - Portugal}, title={Hot Spinning of Cutting Blades for Food Industry}, author={Engemann, David and Homberg, Werner} }","apa":"Engemann, D., &#38; Homberg, W. (n.d.). <i>Hot Spinning of Cutting Blades for Food Industry</i>. Esaform 2022, Braga - Portugal.","ama":"Engemann D, Homberg W. Hot Spinning of Cutting Blades for Food Industry.","ieee":"D. Engemann and W. Homberg, “Hot Spinning of Cutting Blades for Food Industry,” presented at the Esaform 2022, Braga - Portugal.","chicago":"Engemann, David, and Werner Homberg. “Hot Spinning of Cutting Blades for Food Industry.” Braga - Portugal, n.d."},"date_updated":"2023-04-27T09:39:21Z","date_created":"2022-03-14T07:22:43Z","author":[{"full_name":"Engemann, David","id":"51720","last_name":"Engemann","first_name":"David"},{"first_name":"Werner","full_name":"Homberg, Werner","last_name":"Homberg"}],"title":"Hot Spinning of Cutting Blades for Food Industry","conference":{"start_date":"26.04.2022","name":"Esaform 2022","location":"Braga - Portugal","end_date":"29.04.2022"},"type":"conference","abstract":[{"text":"The spinning process is a flexible incremental forming process for the manufacturing of axially-symmetric sheet metal or tubular components with functionally graded properties. It is characterized by the utilization of universal tooling geometries and quite low forming forces. The process has a high potential to reduce material waste, to extend the forming limits and to achieve more complex geometries as well as favorable part properties [1]. Current research work at the Chair of Forming Technology (LUF) is focused on innovative flow-turning processes that have a high potential for producing flat components with excellent geometrical and mechanical properties while keeping process times short [2]. In combination with process-integrated local heat treatment, the new spinning process is predestined for the efficient forming of ultra-high-strength steel or tailored materials. Due to the desired field of food industry only food-safe materials such as special stainless steels are being investigated. This paper presents an innovative machine layout as well as an adequate process design for the production of high-performance circular knives with optimized mechanical hardness. In this context, particular attention is paid to various areas of temperature control as well as process-related challenges during the process.","lang":"eng"}],"file":[{"success":1,"relation":"main_file","content_type":"application/pdf","file_size":785105,"access_level":"closed","file_name":"PaperSuperSharp_Revision.pdf","file_id":"30293","date_updated":"2022-03-14T07:19:21Z","creator":"davideng","date_created":"2022-03-14T07:19:21Z"}],"status":"public","_id":"30292","user_id":"83141","department":[{"_id":"156"}],"ddc":["680"],"keyword":["Cutting blades","Flow-forming","Incremental forming","Hot Forming","High strength steels"],"file_date_updated":"2022-03-14T07:19:21Z","language":[{"iso":"eng"}]},{"type":"conference","status":"public","department":[{"_id":"156"},{"_id":"153"},{"_id":"241"}],"user_id":"36287","_id":"23465","publication_identifier":{"isbn":["978-2-87019-302-0"],"eisbn":["978-2-87019-303-7"]},"publication_status":"published","citation":{"apa":"Arian, B., Homberg, W., Riepold, M., Trächtler, A., Rozo Vasquez, J., &#38; Walther, F. (2021). <i>Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming</i>. 24th International Conference on Material Forming - ESAFORM 2021, Liège, Belgium.","bibtex":"@inproceedings{Arian_Homberg_Riepold_Trächtler_Rozo Vasquez_Walther_2021, place={Liège}, title={Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming}, publisher={ULiège Library}, author={Arian, Bahman and Homberg, Werner and Riepold, Markus and Trächtler, Ansgar and Rozo Vasquez, Julian and Walther, Frank}, year={2021} }","mla":"Arian, Bahman, et al. <i>Forming of Metastable Austenitic Stainless Steel Tubes with Axially Graded Martensite Content by Flow-Forming</i>. ULiège Library, 2021.","short":"B. Arian, W. Homberg, M. Riepold, A. Trächtler, J. Rozo Vasquez, F. Walther, in: ULiège Library, Liège, 2021.","ama":"Arian B, Homberg W, Riepold M, Trächtler A, Rozo Vasquez J, Walther F. Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming. In: ULiège Library; 2021.","ieee":"B. Arian, W. Homberg, M. Riepold, A. Trächtler, J. Rozo Vasquez, and F. Walther, “Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming,” presented at the 24th International Conference on Material Forming - ESAFORM 2021, Liège, Belgium, 2021.","chicago":"Arian, Bahman, Werner Homberg, Markus Riepold, Ansgar Trächtler, Julian Rozo Vasquez, and Frank Walther. “Forming of Metastable Austenitic Stainless Steel Tubes with Axially Graded Martensite Content by Flow-Forming.” Liège: ULiège Library, 2021."},"place":"Liège","author":[{"first_name":"Bahman","id":"36287","full_name":"Arian, Bahman","last_name":"Arian"},{"first_name":"Werner","last_name":"Homberg","id":"233","full_name":"Homberg, Werner"},{"last_name":"Riepold","full_name":"Riepold, Markus","first_name":"Markus"},{"full_name":"Trächtler, Ansgar","id":"552","last_name":"Trächtler","first_name":"Ansgar"},{"first_name":"Julian","last_name":"Rozo Vasquez","full_name":"Rozo Vasquez, Julian"},{"first_name":"Frank","full_name":"Walther, Frank","last_name":"Walther"}],"oa":"1","date_updated":"2023-05-02T08:27:48Z","conference":{"location":"Liège, Belgium","end_date":"2021-04-16","start_date":"2021-04-14","name":"24th International Conference on Material Forming - ESAFORM 2021"},"main_file_link":[{"url":"https://popups.uliege.be/esaform21/index.php?id=2759","open_access":"1"}],"abstract":[{"lang":"eng","text":"One of the main objectives of production engineering is to reproducibly manufacture (complex) defect-free parts. To achieve this, it is necessary to employ an appropriate process or tool design. While this will generally prove successful, it cannot, however, offset stochastic defects with local variations in material properties. Closed-loop process control represents a promising approach for a solution in this context. The state of the art involves using this approach to control geometric parameters such as a length. So far, no research or applications have been conducted with closed-loop control for microstructure and product properties. In the project on which this paper is based, the local martensite content of parts is to be adjusted in a highly precise and reproducible manner. The forming process employed is a special, property-controlled flow-forming process. A model-based controller is thus to generate corresponding correction values for the tool-path geometry and tool-path velocity on the basis of online martensite content measurements. For the controller model, it is planned to use a special process or microstructure (correlation) model. The planned paper not only describes the experimental setup but also presents results of initial experimental investigations for subsequent use in the closed-loop control of α’-martensite content during flow-forming."}],"language":[{"iso":"eng"}],"keyword":["Flow-forming","Spinning","Process Strategy","Martensite Content","Property Control","Micromagnetic Measurement","Metastable Austenitic Stainless Steel"],"quality_controlled":"1","year":"2021","date_created":"2021-08-23T13:00:35Z","publisher":"ULiège Library","title":"Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming"}]