PSI - Issue 1

Henrique Videira et al / StructuralIntegrity Procedia 00 (2016) 000 – 000

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H. Videira et al. / Procedia Structural Integrity 1 (2016) 197–204

204

Proportional without notch

Proportional with notch

Non proportional without notch Non Proportional with notch

100 120 140 160

60 80

von Mises stress [MPa]

5.0E+03

5.0E+04

5.0E+05

5.0E+06

Number of cycles - N

Figure 6 – Resume of the study for the AZ31B magnesium alloy.

6. Conclusions A study of the behavior of a magnesium alloy AZ31B was carried out. This study was based on fractographic and crack growth rate analysis. To achieve this purpose were conducted experimental and numerical tests in order measure the angle and determine the parameters of strain near the notch. The morphology of the fracture surface show differences between load paths, namely the radial marks. Results show that the load and the notch have a significant influence, as well as the loading path on the behaviour and fatigue life of the magnesium alloy AZ31B. The methodology adopted to estimate the life of the specimen presents satisfactory results. References Aghion, E., Bronfin, B. and Eliezer, D. 2001. The role of the magnesium industry in protecting the environment. Journal of Materials Processing Technology. 2001, Vol. 117, pp. 381-385. Blawert, T., Hort, n. and Kainer, C. 2004. "Automotive Applications of Magnesium and its Alloys". Trans Indian Inst Met. 2004, Vol. 57 (4), pp. 397-408. Horst, Friedrich and Barry, Mordike. 2006. Magnesium Technology - Metallurgy, Design Data and Applications. New York : Springer, 2006. p. 677. ISBN - 10 3-540-20599-3. Kulekci, M. 2008. "Magnesium and its alloys in automotive industry". The International Journal of Advanced Manufactoring Technology. 2008, Vol. 39(9), pp. 851-865. Lemaitre, J. and Chaboche, J.L. 1985. Mécanique dex matériaux solides. Paris : Bordas, 1985. Mordike, B. and Ebert, T. 2001. Magnesium Properties - applications - potencial. Materials Science and Engineering. 2001, pp. 37-45. Polmear, I. J. 1995. Light Alloys - Metallurgy of the Light Metals. London: Arnold, 1995. ISBN: 0-340-63207-0. Socie, D. and Marquis, G. 2000. Multiaxial fatigue. USA : SAE International, 2000. p. 484. ISBN: 0-7680-0453-5. Sun, B. and Guo, Y. 2004. High-cycle fatigue damage measurement based on electrical resistance change. International Journal of Fatigue. 2004, pp. 457-462. Tanaka, K. 1974. Fatigue crack propagation from a crack inclined to the cyclic tensile axis. Engineering Fracture Mechanics. 1974, Vol. 6, pp. 493-507.