Abstract
During the manufacturing of semi-finished products, the material is subjected to various forming steps to achieve the final geometry. In order to reduce the work hardening introduced and to ensure a good formability, it is annealed before component manufacturing. Forming technologies like forward rod extrusion are well-established methods for the efficient production of resilient components. In this process, however, an inhomogeneous pre-strengthening of the material influences the stress distribution during forming and therefore the mechanical properties and the residual stresses in the component. Since they affect the parts’ operating behaviour, knowledge of the influence of the delivery condition of the material is necessary. The aim of this paper is to derive dependencies between material properties and the resulting residual stresses and work hardening in the component. Due to the increasing application, ferritic stainless steel X6Cr17 in the skin passed (+LC) and soft annealed (+A) states are used. Residual stresses, microstructure, and microhardness distribution of both material states are compared regarding the rods and extruded parts. The effects of the delivery condition are evaluated by comparing process and component properties.
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References
Semiatin SL (2005) ASM handbook, volume 14A: metalworking: bulk Forming. ASM International, Materials Park, Ohio
Almer JD, Cohen JB, Winholtz RA (1998) The effects of residual macrostresses and microstresses on fatigue crack propagation. Metall Mater Trans A 29A:2127–2136. https://doi.org/10.1007/s11661-998-0038-9
Maki T (1997) Stainless steel: progress in thermomechanical treatment. Curr Opin Solid St M 2:290–295. https://doi.org/10.1016/S1359-0286(97)80117-9
Gerin B, Pessard E, Morel F, Verdu C, Mary A (2016) Beneficial effect of a prestrain due to cold extrusion on the multiaxial fatigue strength of a 27MnCr5 steel. Int J Fatigue 92:345–359. https://doi.org/10.1016/j.ijfatigue.2016.07.012
Cardarelli F (2018) Materials handbook—a concise desktop reference. Springer International Publishing, Cham, Switzerland
EN 10027–1 (2017) Designation systems for steels—part 1: steel names
Lin HS, Hsu YC, Keh CC (2008) Inhomogeneous deformation and residual stress in skin-pass axisymmetric drawing. J Mater Process Tech 201:128–132. https://doi.org/10.1016/j.jmatprotec.2001.11.126
Landkammer P, Jobst A, Kiener C, Steinmann P, Merklein M (2019) Investigations on residual stress generation in full-forward-extrusion. Prod Engineer 13:169–180. https://doi.org/10.1007/s11740-019-00892-5
Pyzalla A, Reimers W (1999) Residual stress and texture due to cold and hot extrusion processes. Texture Microstruct 33:291–301. https://doi.org/10.1155/TSM.33.291
Tekkaya AE (1986) Ermittlung von Eigenspannungen in der Kaltmassivumformung. Springer, Berlin, Germany
Jobst A, Kiener C, Merklein M (2019) Investigations on residual stress generation in extruded steel components. In: Wulfsberg JP, Hintze W, Behrens BA (eds) Production at the leading edge of technology. Proceedings of the 9th Congress of the German Academic Association for Production Technology (WGP), Hamburg, Springer, Berlin, Germany, pp 83–92
Schajer GS (2010) Advances in hole-drilling residual stress measurements. Exp Mech 50:159–168. https://doi.org/10.1007/s11340-009-9228-7
Gustafson J, Shipilin M, Zhang C, Stierle A, Hejral U, Ruett U, Gutowski O, Carlsson PA, Skoglundh M, Lundgren E (2014) High-energy surface X-ray diffraction for fast surface structure determination. Sci 343:758–761. https://doi.org/10.1126/science.1246834
Fu P, Chu R, Xu Z, Ding G, Jiang C (2017) Relation of hardness with FWHM and residual stress of GCr15 steel after shot peening. Appl Surf Sci 431:165–169. https://doi.org/10.1016/j.apsusc.2017.09.136
EN 1993–1–4 (2015) Eurocode 3: design of steel structures—part 1–4: general rules—supplementary rules for stainless steels
EN 15305 (2008) Non-destructive testing—test method for residual stress analysis by X-ray diffraction
Spieß L, Teichert G, Schwarzer R, Behnken H, Genzel C (2019) Moderne Röntgenbeugung – Röntgendiffraktometrie für Materialwissenschaftler, Physiker und Chemiker. Springer Nature, Wiesbaden, Germany
ISO 14577–1 (2015) Metallic materials—instrumented indentation test for hardness and materials parameters—part 1: test method
Sen S, Akal B, Ozel A (2000) Transient and residual thermal stresses in quenched cylindrical bodies. Int J Mech Sci 42:2013–2029. https://doi.org/10.1016/S0020-7403(99)00063-6
Kuboki T, Kawamaki I, Neishi Y, Kuroda K, Akiyama M (2001) A study on the influence of mechanical properties on the distribution of axial residual stress after cold drawing of metallic bars. Mater Sci Res Int 7:41–46. https://doi.org/10.2472/jsms.50.3Appendix_41
Ruiz-Hervias J, Luzin V, Prask H, Gnaeupel-Herold T, Elices M (2006) Effect of thermo-mechanical treatments on residual stresses measured by neutron diffraction in cold-drawn steel rods. Mat Sci Eng A-Struct 435–436:725–735. https://doi.org/10.1016/j.msea.2006.07.123
Atienza J, Martinez-Perez M, Ruiz-Hervias J, Mompean F, Garcia-Hernandez M, Elices M (2005) Residual stresses in cold drawn ferritic rods. Scripta Mater 52:305–309. https://doi.org/10.1016/j.scriptamat.2004.10.010
Acknowledgments
The research activities are funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) within the scope of the priority programme SPP2013—Targeted Use of Forming Induced Residual Stresses in Metal Components in the subproject P10 (project number: 374688875).
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Jobst, A., Merklein, M. (2021). Influence of Material Delivery Condition on Residual Stresses and Part Properties During Forward Rod Extrusion. In: Daehn, G., Cao, J., Kinsey, B., Tekkaya, E., Vivek, A., Yoshida, Y. (eds) Forming the Future. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-75381-8_191
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