Abstract
The automotive industry is one of the most dynamic and competitive segments of the international economy and it has invested considerable resources into the research and development of new components and the improvement of existent pieces. Nonetheless, failures continue to occur, often because of defects in a component. Failure analysis uses several techniques to investigate causes of the defect which led to the failure of a component, equipment, or structure. Usually, these causes are related to the use of inadequate materials, the presence of defects which appear during fabrication or design errors, or improper assembly, maintenance and use. Knowledge about these causes and the correction of such anomalies allow the improvement of the performance of components regarding both efficiency and safety. In this study, the results of the failure analysis of the drive bar of a police car are presented and light optical microscopy and scanning electron microscopy (SEM) results are used to show that the presence of an already existent defect and an unfavorable microstructure led to the occurrence of brittle fracture which caused the premature and catastrophic failure of this component.
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References
McEvily, A.J.: Metal Failures: Mechanisms, Analysis, Prevention, pp. 303–307. Wiley, New York (2002)
Wouters, R., Froyen, L.: Scanning electron microscope fractography in failure analysis of steels. Mater. Charact. 36, 357–364 (1996)
Metals Handbook, Failure Analysis and Prevention, 9th edn., vol. 11, pp. 13–65. ASM (American Society for Metals), Metals Park, OH (1986)
ASM Handbook, Failure Analysis and Prevention, vol. 11, pp. 560–599. ASM International, Materials Park, OH (2002) (2nd printing: 2004)
ASM Handbook, Properties and Selection: Irons, Steels and High Performance Alloys, vol. 1, p. 176. ASM International, Materials park, OH (1990) (6th printing: 2001)
Pickering, F.B.: Physical Metallurgy and the Design of Steels, pp. 107–108. Applied Science Publishers Ltd., London (1978)
Bhadeshia, H.K.D.H.: Bainite in Steels, 2nd edn., pp. 2–4, 189. IOM Communications Ltd. (2001)
ASM Handbook, Metallography and Microstructures, vol. 9, pp. 56–62. Metals Park (2004)
Easterling, K.E.: Introduction to the Physical Metallurgy of Welding, pp. 88–92. Butterworths, Sevenoaks (1983)
Porter, D.A., Easterling, K.E.: Phase Transformations in Metals and Alloys, pp. 317–322. Van Nostrand Reinhold Company, New York (1981)
Shewmon, P.G.: Transformations in Metals, pp. 216–226. McGraw-Hill Book Company, New York (1969)
Hashemi, S.H., Mohammadyani, D., Pouranvari, M., Mousavizadeh, S.M.: On the relation of microstructure and impact toughness characteristics of DSAW steel of grade API X70. Fatigue Fract. Eng. Mater. Struct. 32, 33–40 (2009)
Gubeljak, N.: Unstable fracture behaviour of weld metal at a high strength low alloy steel. Facta Univ. Ser. Mech. Autom. Control Robot. 3(13), 715–727 (2003)
Rak, I., Gliha, V., Koçak, M.: Weldability and toughness assessment of Ti-microalloyed offshore steel. Metall. Mater. Trans. A 28A, 199–206 (1997)
Cabalín, L.M., Mateo, M.P., Laserna, J.J.: Large area mapping of non-metallic inclusions in stainless steel by an automated system based on laser ablation. Spectrochim. Acta B 59, 567–575 (2004)
Perkins, K.M., Bache, M.R.: The influence of inclusions on the fatigue performance of a low pressure turbine blade steel. Int. J. Fatigue 27, 610–616 (2005)
Maropoulos, S., Ridley, N.: Inclusions and fracture characteristics of HSLA steel forgings. Mater. Sci. Eng. A 384, 64–69 (2004)
Atkinson, H.V., Shi, G.: Characterization of inclusions in clean steels: a review including the statistics of extreme methods. Prog. Mater. Sci. 48, 457–520 (2003)
Zhang, L.: Inclusion and bubble in steel—a review. J. Iron Steel Res. Int. 13(3), 1–8 (2006)
Shi, G., Zhou, S., Ding, P.: Investigation of nonmetallic inclusions in high-speed steels. Mater. Charact. 38, 19–23 (1997)
ASM Handbook, Fractography, vol. 12, p. 217. Materials Park (2nd printing, 1992)
Hertzberg, R.W.: Deformation and Fracture Mechanics of Engineering Materials, 2nd edn., pp. 261–263. Wiley, New York (1983)
ASTM E 140-05 Standard: Standard Hardness Conversion Tables for Metals, Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness and Scleroscope Hardness
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Barbosa, C., do Nascimento, J.L., Caminha, I.M.V. et al. A Microstructural and Fractographic Study on the Failure of a Drive Shaft. J Fail. Anal. and Preven. 11, 693–699 (2011). https://doi.org/10.1007/s11668-011-9499-z
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DOI: https://doi.org/10.1007/s11668-011-9499-z