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47th SME North American Manufacturing Research Conference (NAMRC)

作者： Rinaldi, Sergio Rotella, Giovanna Umbrello, Domenico Univ Calabria Dept Mech Energy & Management I-87036 Arcavacata Di Rende CS Italy Univ Calabria Dept Comp Engn Modeling Elect & Syst Engn I-87036 Arcavacata Di Rende CS Italy

Nickel based superalloys, such as Waspaloy, are extensively used for applications under heavy environmental conditions due to their superior thermo-mechanical properties. However, manufacturing processes of these materials are challenging since they involve issues related to their poor workability. Thus, huge research work for optimizing the processing parameters is still required. This problem becomes even more pronounced when finishing processes, such as roller burnishing, are considered. In fact, it is crucial to use parameters able to increase the productivity and to improve the quality of the manufactured parts, consequently a huge number of preliminary experimental tests have to be carried out. Hence, numerical simulation can be a valid support for obtaining information about the metallurgical phenomena that affect the materials while large strains occur. However, commercial software are not still able to appropriately predict such modifications. Thus, the main objective of the present work is to study a roller burnishing on Waspaloy in terms of processing parameters and surface integrity by experimental and numerical analysis, in terms of forces, temperatures, roughness, microstructural modification and microhardness. Thus, the customized simulation demonstrated to provide useful information able to drastically reduce the number of needed tests leading also to a deeper knowledge of the microscopic phenomena involved in the process. (C) 2019 The Authors. Published by Elsevier B.V.

关键词： Roller burnishing Waspaloy physics based numerical modeling Surface Integrity

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Experimental and numerical analysis of roller burnishing of Waspaloy

引用

Procedia Manufacturing 2019年 34卷 65-72页

作者： Sergio Rinaldi Giovanna Rotella Domenico Umbrello Department of Mechanical Energy and Management Engineering University of Calabria Rende CS 87036 Italy Department of Computer Engineering Modeling Electronics and Systems Engineering University of Calabria Rende CS 87036 Italy

Nickel based superalloys, such as Waspaloy , are extensively used for applications under heavy environmental conditions due to their superior thermo-mechanical properties. However, manufacturing processes of these materials are challenging since they involve issues related to their poor workability. Thus, huge research work for optimizing the processing parameters is still required. This problem becomes even more pronounced when finishing processes, such as roller burnishing, are considered. In fact, it is crucial to use parameters able to increase the productivity and to improve the quality of the manufactured parts, consequently a huge number of preliminary experimental tests have to be carried out. Hence, numerical simulation can be a valid support for obtaining information about the metallurgical phenomena that affect the materials while large strains occur. However, commercial software are not still able to appropriately predict such modifications. Thus, the main objective of the present work is to study a roller burnishing on Waspaloy in terms of processing parameters and surface integrity by experimental and numerical analysis, in terms of forces, temperatures, roughness, microstructural modification and microhardness. Thus, the customized simulation demonstrated to provide useful information able to drastically reduce the number of needed tests leading also to a deeper knowledge of the microscopic phenomena involved in the process.

关键词： Roller burnishing Waspaloy physics based numerical modeling Surface Integrity

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