PSI - Issue 16

Cristian Alejandro de León Gómez et al. / Procedia Structural Integrity 16 (2019) 265–272 Cristian Alejandro de León Gómez et al. / Structural Integrity Procedia 00 (2019) 000 – 000

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From the results, presented in the Table 2, it is seen that corrosion environment greaten influences the durability of the investigated structural element and such trend is observed for all the considered cases as well as for all modelled crack like defects. Usually, the durability of the investigated object in the air is greater. As for the environment, then the durability is somewhat better in the case of 0 mT, although with a very insignificant difference.

6. Conclusions

On the basis of experimental research criterial value of SIF for the stainless steel duplex 2205 is determined. Applying analytical relations for SIF characteristics value of crack like defects length that may take place in the considered frame construction are calculated. Engineering calculations for assessment of the given object durability are suggested and presented with modelled crack like defects of various form and geometry on the base of load cycles number. On the other hand, it was determined that each case requires separate study, since the impact on durability of structural element of any parameter is felt, but the given approach is positive because systematic express-analysis of various structural elements in aggressive environments that can be met in engineering practice is possible. Let us consider that it is advisable to continue researching materials produced with a large number applying axial External Electromagnetic Fields, for example 8 or 12 mT. Badji, R., Bouabdallah, M., Bacroix, B., Kahloun, C., 2008. Phase transformation and mechanical behavior in annealed 2205 duplex stainless steel welds. Materials Characterization 59, 447 – 453. Dmytrakh, I.M., Panasyuk, V.V., 1999. An influence of the corrosive environments on local fracture of the metals near the stress concentrators. Karpenko Physico-Mechanical Institute, Lviv, pp. 341. (In Ukrainian). Dmytrakh, I.M., Vainman, A.B., Stashchuk, M.H. and Toth, L., 2005. Reliability and durability of structural elements for heat-and-power engineering equipment, in: “ Reference manual ”. In: Dmytrakh, I.M. (Ed.). Publishing House of NASU “Academperiodyka” , Kyiv, pp. 378. (In Ukrainian). García - Rentería , M.A., López -Morelos, V.H., García - Hernández , R., Dzib Pérez , L., García -Ochoa, E.M., González - Sánchez , J., 2014. Improvement of localised corrosion resistance of AISI 2205 duplex stainless steel joints made by gas metal arc welding under electromagnetic interaction of low intensity. Applied Surface Science 321, 252 – 260. Gunn, R.N., 1997. Duplex stainless steels: Microstructure, properties and applications. Woodhead Publishing LTD. Jiang, Z.L., Chen, X.Y., Huang, H., Liu, X.Y., 2003. Grain refinement of Cr25Ni5Mo1.5 duplex stainless steel by heat treatment. Material Science and Engineering A 363, 263 – 267. Kordatos, J.D., Fourlaris, G., Papadimitriou, G., 2001 The effect of cooling rate on the mechanical and corrosion properties of SAF 2205 (UNS 31803) duplex stainless steel welds. ScriptaMaterialia 44, 401 – 408. Merkblatt DVS 2401, 1982, Teil 1, Bruchmechanische Bewertung von Fehlern in Schweißverbindungen, (August), Deutscher Verband für Schwei ßtechnik. Miller, K.J., 1987. the behaviour of short fatigue cracks and their initiation part I – A review of two recent books. Fatigue & Fracture of Engineering Materials & Structures 10, 75 – 91. Muthupandi, V., Balasrinivasan, P., Seshadri, S.K., Sundaresan, S., 2003. Effect of weld metal chemistry and heat input on the structure and properties of duplex stainless steel welds. Materials Science and Engineering 358, 9 – 16. Newman, J.C., Raju, I.S., 1983. Stress intensity factor equations for cracks in three-dimensional finite bodies, in: “ Fracture Mechanics: Fourteenth Symposium ” . Volume I: Theory and Analysis (STP 791). In: Lewis, J. C., Sines, G. (Ed.). ASTM83, 238 – 265. Paris, P., Erdogan, F., 1963. A critical analysis of crack propagation laws. Journal of Basic Engineering 85, 528 – 533. Polishchuk, L. K., Kharchenko, H. V., Zvirko, О. І. 2015. Corrosion -fatigue crack-growth resistance of steel of the boom of a clamp-forming machine. Materials Science 2, 229 – 234. Sathiya, P., Aravindan, S., Soundararajan, R. Noorul Haq, A., 2009. Effect of shielding gases on mechanical and metallurgical properties of duplex stainless-steel. Journal of Materials Science 44, 114-121. Soylu, B., Honeycombe, R.W.K., 1990. Microstructural refinement of duplex stainless steels. Material Science and Technology 7, 137 – 145. Tada, H., Paris P.C., Irwin, G.R., 2013. The Stress Analysis of Cracks Handbook. Edition 3. Hellertown, Del Research Corporation, pp. 698. Varol, I., Lippold, J.C., Baeslack, W.A., 1992. Welding of duplex stainless steels. Key Engineering Materials 69 – 70, 217 – 252. References