The Influence of Microstructure on the Fracture Development in Engineering Parts

Abstract:

Examples of failure of mechanical parts on account of the microstructural defects or heterogeneity are described. The evaluation of defect problematic was carried out using light and scanning electron microscopy. The root detected cause of problems was in a form of coarse particles in the microstructure, intensive line spacing or banding in the material. The influence of combination of intensive stress and inappropriate orientation of parts towards the direction of forming of semi-products was often observed. A rigorous approach to the material selection and the appropriate quality control of semi-products has to be considered to prevent the risk of a failure of engineering parts.

• Periodical: Solid State Phenomena (Volume 270)
• Pages: 74-79
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.270.74
• Online since: November 2017
• Authors: Jakub Horník*, Elena Čižmárová, Stanislav Krum, Jan Krčil, Vladimír Mára
• Keywords: Crack, Fracture, Microstructure

References

[1] M. Kutz, Mechanical Engineers Handbook, 3rd ed. New Jersey: WILEY, 2005. 3600s. ISBN 978-0471449904.

[2] Y. Li, S. Qiu, Z. Zhu, D. Han, J. Chen and H. Chen, Intergranular crack during fatigue in Al-Mg-Si aluminum alloy thin extrusions, in: International Journal of Fatigue. 2017, 100, 105-112. DOI: 10. 1016/j. ijfatigue. 2017. 03. 028. ISSN 01421123.

DOI: 10.1016/j.ijfatigue.2017.03.028

[3] U. Zerbst, U.C. Klinger, R. Clegg,. Fracture mechanics as a tool in failure analysis — Prospects and limitations, in: Engineering Failure Analysis. 2015, 55, 376-410. DOI: 10. 1016/j. engfailanal. 2015. 07. 001. ISSN 13506307.

DOI: 10.1016/j.engfailanal.2015.07.001

[4] R.A. Mesquita, C.A. Barbosa, A.R. Machado, 2. 9 Heat Treatment of Tool Steels, Comprehensive Materials Finishing, Elsevier, 2017, 55, 214. DOI: 10. 1016/B978-0-12-803581-8. 09191-8. ISBN 9780128032497. ISSN 13506307.

DOI: 10.1016/b978-0-12-803581-8.09191-8