Laser-assisted robotic roller forming of an ultrahigh strength martensitic steel

Liu Y.; Min J.; Zhang J.Cai W.Carlson B.E.Bobel A.C.Hector L.G.Sachdev A.K.

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Laser-assisted robotic roller forming of an ultrahigh strength martensitic steel

机译：Laser-assisted robotic roller forming of an ultrahigh strength martensitic steel

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? 2022 The Society of Manufacturing EngineersLaser-assisted robotic roller forming (LRRF) was developed as a means for bending ultrahigh strength martensitic steel (MS1300) strip without fracture. The strip is bent through application of a thermal load from a fiber laser followed by a mechanical load from a steel roller: the translational motion of both is controlled via an industrial robot. A combined experimental and computational methodology was developed using a lab-scale LRRF cell and a finite element (FE) model that accounts for thermo-elastic-plastic bending from laser irradiation and the roller contact. The FE model was calibrated according to the experimental temperature data to reconstruct the spatiotemporal temperature field. The simulated temperature field was further applied to analyze MS1300 microstructure evolution and microhardness distribution. It is shown that the material under the laser beam was austenitized and then quickly cooled down. The microstructure in the bend subsequently consisted of new martensite near the tension (irradiated) surface, a through-thickness region consisting of both martensite and tempered martensite, and tempered martensite at the compression side of the bend.

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《Journal of manufacturing processes》 |2022年第10期|192-202|共11页
作者
Liu Y.; Min J.; Zhang J.Cai W.Carlson B.E.Bobel A.C.Hector L.G.Sachdev A.K.;
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School of Mechanical Engineering Tongji University;

School of Mechanical Engineering Tongji UniversitySchool of Mechanical Engineering Tongji University||Shanghai Key Laboratory for A&D of Metallic Functional Material Tongji University;

||Manufacturing Systems Research Laboratory General Motors Global Research & DevelopmentChemical and Materials Systems Laboratory General Motors Global Research & Development;

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正文语种英语
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Finite element model; Laser-assisted forming; Microstructure; Roller forming; Temperature field;

Laser-assisted robotic roller forming of an ultrahigh strength martensitic steel

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