Investigation of Surface Crack Types under Axial Compression Loading for a Case-Hardening Steel


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During cold-forming operations the formability of the materials can be reached due to the low process temperature, leading to crack initiation. For the investigated case-hardening steel 16MnCrS5 longitudinal cracks and shear cracks are identified as the main crack types. The evolution of both crack types is determined by scanning electron microscope (SEM)-investigations and a simplified finite element method (FEM)-model. The results reveal that the initiation point of shear cracks is located at the surface. In contrast thereto longitudinal cracks emanate from second phase particles in the rim zone.



Key Engineering Materials (Volumes 452-453)

Edited by:

A. Saimoto and M.H. Aliabadi




F. Klocke et al., "Investigation of Surface Crack Types under Axial Compression Loading for a Case-Hardening Steel", Key Engineering Materials, Vols. 452-453, pp. 741-744, 2011

Online since:

November 2010




[1] T.R. Thomason, A. Brownrigg: The effect of inclusions on the cold formability, in: Focal Point - Inclusions in Steel, 2, Vol. 2, No. 2, pp.118-125, (1979).

[2] A.S. Korhonen: Localization of plastic flow and ductile fracture in metals, in: Acta Polytechnica Scandinavica, Vol. 144, Helsinki, (1980).

[3] J. Gurland: Oberservations on the fracture of cementite particles in a spheroidized 1. 05 % C steel deformed at room temperature, in: Acta Metallurgica, Vol. 20, (1972).

DOI: 10.1016/0001-6160(72)90102-2

[4] N.L. Dung: Ein Beitrag zur Untersuchung der Rißentstehung in der Kaltmassivumformung metallischer Werkstoffe. VDI-Verlag, Nr. 175, Reihe 2, (1989).

[5] U. Zitz: Abschätzung der Rißentstehung bei der Kaltumformung. Dissertation, Aachen University, Germany, (1995).

[6] J.R. Rice, D.M. Tracey: On the ductile enlargement of voids in triaxial stress fields, in: Journal of Mechanics and Physics of Solids, Vol. 17, pp.201-217, (1969).

DOI: 10.1016/0022-5096(69)90033-7

[7] F. Klocke, A. Timmer, P. Mattfeld: Prediction of formability, in: Neuere Entwicklungen in der Massivumformung. Fellbach: MAT INFO Werkstoff-Informationsgesellschaft mbH, pp.121-141, (2009).

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