Deformation Mechanisms at Elevated Temperatures: Influence of Momenta and Energy in the Single Impact Test

Authors: Harald Rojacz, Markus Varga, Horst Winkelmann

Abstract:

Within this work High Temperature Single Impact Studies were performed to evaluate deformation mechanisms at different energy and momentum levels. To show the influence of different microstructures and hardness levels and their response to single impacts four different materials were tested at various temperatures up to 700°C. One carbide reinforced NiCrBSi based Metal Matrix Composite and three different steels were tested. The aim of this work is to determine critical energies for fracture appearance and the materials response at different energy and momenta levels. Critical impact loadings were examined at elevated temperatures to limit operating conditions in impact dominated regimes at elevated temperatures. The investigations on the mechanisms were performed using different means of microscopy at the surface and in metallographic cross sections. Results indicate temperature dependence of the occurrence of cracks in hardphase rich materials, such as Metal Matrix Composites High Speed Steels and the influence of different impact momenta at constant energies on the deformation of different steels.

Keywords: Deformation, High Temperature, Metal Matrix Composite, Single Impact Test, Steel.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1061864

References:

[1] J.A. Collins, H. Busby, G.H. Staab, Mechanical Design of Machine Elements and Machines. Hoboken: Wiley VCH, 2003, ch.4.
[2] H. Winkelmann, E. Badisch, M. Kirchgaßner, H. Danninger, "Wear Mechanisms at High Temperatures. Part 1: Wear Mechanisms of Different Fe-Based Alloys at elevated temperatures," Tribol. Letters, vol. 34, pp. 155-166, March 2009.
[3] H. Winkelmann, M. Varga, E. Badisch, H. Danninger, "Wear Mechanisms at High Temperatures. Part 2: Temperature Effect on Wear Mechanisms in the Erosion Test," Tribol. Letters, vol. 34, pp. 167-175, March 2009.
[4] H. Winkelmann, E. Badisch, M. Varga, H. Danninger, "Wear Mechanisms at High Temperatures. Part 3: Changes of the Wear Mechanisms in the Erosion Test," Tribol. Letters, vol. 37, pp. 419-429, January 2010.
[5] H.J. Bargel, G. Schulze, Werkstoffkunde. Heidelberg: Springer-Verlag, 2008, ch.1.
[6] H. Rojacz, M. Hutterer, H. Winkelmann, "High temperature single impact studies on material deformation and fracture behavior of metal matrix composites and steels," Materials Sci. and Eng. A, vol. 562, pp. 39-45, November 2012.
[7] S. Tianmin, H. Meng, T.H. Yuen, "Impact wear behavior of laser hardened hypoeutectoid 2Cr13 martensite stainless steel," Wear, vol. 255, pp. 444-455, August 2003.
[8] H. Rojacz, H. Winkelmann, M. Varga, "Verhalten von Eisenbasiswerkstoffen unter Einezelschlagbelastung," in Proc. ÖTG Symposia 2011, Wiener Neustadt, 2011, pp- 143-152.
[9] A. Zikin, I. Hussainova, C. Katsich, E. Badisch, C. Tomastik, "Advanced chromium carbide-based hardfacings," Surface and Coatings Technol., vol. 206, pp. 4270-4278, May 2012.
[10] M. Kirchgaßner, E. Badisch, F. Franek, "Behavior of iron-based hardfacing alloys under abrasion and impact," Wear, vol. 265, pp. 772- 779, August 2006.
[11] K. Wellinger, H. Breckel, "Kenngrössen und Verschleiss beim Stoss metallischer Werkstoffe," Wear, vol. 13, pp. 257-281, April 1969.
[12] E. Hornbogen, G. Eggeler, E. Werner, Werkstoffe - Aufbau und Eigenschaften. Heidelberg: Springer-Verlag, 2012, ch.4.
[13] S.L. Kakani, A. Kakani, Materials Science, New Delhi: New Age Publishers, 2004, ch.7.
[14] H. Winkelmann, M. Varga, E. Badisch, ÔÇ×Influence of Secondary precipitation in Fe-based MMCs on high temperature wear," Tribol. Letters, vol. 43, pp.229-235, Aug. 2011.
[15] N. Chawla, K.K. Chawla, Metal Matrix Composites, New York: Springer, 2000, ch.10.
[16] H. Rojacz, A. Zikin, C. Mozelt, H. Winkelmann, E. Badisch, "High temperature corrosion studies of cermet particle reinforced NiCrBSi hardfacings," Surface and Coatings Technol., vol. 222, pp. 90-96, February 2013.
[17] A. Zikin, E. Badisch, I. Hussainova, C. Tomastik, H. Danninger, "Characterisation of TiC-NiMo reinforced Ni-based hardfacing," Surface and Coatings Technol., to be published.
[18] A. Zikin, M. Antonov, I. Hussainova, L. Katona, A. Gavrilovic, "High temperature wear of cermet particle reinforced NiCrBSi hardfacings," Tribology Int., to be published.
[19] G. Krauss, "Martensite in steel: strength and structure," Mater. Sci. and Eng., vol. A 273, pp. 40-57, Dec. 1999.
[20] G. W. Stachowiak, A.W. Batchelor, Engineering Tribology. Burlington: Elsevier Butterworth Heinemann, 2005, ch. 15.
[21] R.O. Ritchie,"Mechanisms of fatigue-crack propagation in ductile and brittle solids," Int. J. of Fracture, vol. 100, pp. 55-83, May 2008.