Investigations on Residual Stress Generation in Extruded Steel Components

Jobst A, Kiener C, Merklein M (2019)

Publication Language: English

Publication Type: Conference contribution, Original article

Publication year: 2019

Original Authors: Andreas Jobst, Christoph Kiener, Marion Merklein

Edited Volumes: Production at the leading edge of technology

Pages Range: 83-92

Event location: Hamburg DE

ISBN: 9783662604168

DOI: 10.1007/978-3-662-60417-5_8

Abstract

During the forming of components, inhomogeneous stress conditions lead to residual stresses, which influence the operating behaviour of the manufactured part. Compressive residual stresses generally have a positive effect, while tensile residual stresses reduce the fatigue strength and facilitate crack initiation. Full forward extrusion has been established as an industrial manufacturing technique, where cylindrical billets are formed in the die and ejected in opposite direction. In order to influence the residual stresses state, it is essential to know about its formation. A basic understanding is created by separate investigation of the forming and the ejection step. In the context of this paper, singlephase ferritic stainless steel X6Cr17 and ferritic-austenitic duplex steel X2CrNi- MoN22-5-3 are used. The quantification of the residual stresses states is carried out by X-ray diffractometry, for which a measurement method for duplex steel is validated. The influence of forming and ejection is determined separately by manufacturing components with and without an ejection operation.

Authors with CRIS profile

Andreas Jobst Institute of Manufacturing Technology (LFT) Christoph Kiener Institute of Manufacturing Technology (LFT) Marion Merklein Institute of Manufacturing Technology (LFT)

Related research project(s)

Investigation of residual stress related elementary processes in cold forged components in the manufacturing and operating phase Gezielte Nutzung umformtechnisch induzierter Eigenspannungen in metallischen Bauteilen Jan. 1, 2018 - March 31, 2024

How to cite

APA:

Jobst, A., Kiener, C., & Merklein, M. (2019). Investigations on Residual Stress Generation in Extruded Steel Components. In Springer-Verlag GmbH, DE (Eds.), Proceedings of the 9th Congress of the German Academic Association for Production Technology (WGP) (pp. 83-92). Hamburg, DE.

MLA:

Jobst, Andreas, Christoph Kiener, and Marion Merklein. "Investigations on Residual Stress Generation in Extruded Steel Components." Proceedings of the 9th Congress of the German Academic Association for Production Technology (WGP), Hamburg Ed. Springer-Verlag GmbH, DE, 2019. 83-92.

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