Fatigue and Cyclic Behavior of 304L Stainless Steel in the Presence of Boriding Surface Treatment

Abstract:

In this work, we will study the cyclic behavior (tension-compression under strain control) and the fatigue of 304L austenitic SS after application of a boriding thermochemical treatment. 304L specimens was borided in a solid medium at 900 °C for 4 hours. The phase analysis of boride layers formed at the surface was performed by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The obtained results show that the layers formed on 304L steel contained the following boride phases FeB, Fe₂B, CrB, Cr₂B, NiB and Ni₂B. The fatigue tests show that the boriding treatment improves the life a factor which may be greater than four. The borided specimens show a negative average stress during cycling which may explain the increase of fatigue life. Analysis of the fracture surface by SEM show that crack initiation takes place in the substrate rather than in the boron-treated area.

• Periodical: Key Engineering Materials (Volume 703)
• Pages: 106-111
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.703.106
• Online since: August 2016
• Authors: Omar Allaoui*, Lakhdar Taleb
• Keywords: 304L Steel, Boriding, Cyclic Behavior, Fatigue

References

[1] X. Yang, X. Ling, J. Zhou, Optimization of the fatigue resistance of AISI304 stainless steel by ultrasonic impact treatment, Inter. J. of Fatigue 61 (2013) 28-38.

DOI: 10.1016/j.ijfatigue.2013.12.003

[2] N. Uzunov, R. Ivanov, Aluminothermic powder boriding of steel, Appl. Surf. Sci. 225 (2004) 72–77.

DOI: 10.1016/j.apsusc.2003.09.032

[3] I. Campos, R. Torres, O. Bautista, G. Ramírez, L. Zuniga, Effect of boron paste thickness on the growth kinetics of polyphase boride coatings during the boriding process, Appl. Surf. Sci., 252 (2006) 2396-2403.

DOI: 10.1016/j.apsusc.2005.04.022

[4] K. Matiašovský, M. Chrenková-Paučírová, P. Fellner, M. Makyta, Electrochemical and thermochemical boriding in molten salts, Surf. Coat. Tech., 35 (1988) 133–149.

DOI: 10.1016/0257-8972(88)90064-3

[5] M. Kulka, N. Makuch, A. Pertek, A. Piasecki, An alternative method of gas boriding applied to the formation of borocarburized layer, Mater. Charact., 72 (2012) 59-67.

DOI: 10.1016/j.matchar.2012.07.009

[6] M. Enver Atık, Umut Yunker, Cevdet Merıç, The effects of conventional heat treatment and boronizing on abrasive wear and corrosion of SAE 1010, SAE 1040, D2 and 304 steels, Tribol. Int., 36 (2003) 155-161.

DOI: 10.1016/s0301-679x(02)00069-5

[7] E. Dokumaci, I. Özkan, B. Önay, Effect of boronizing on the cyclic oxidation of stainless steel, Surf. Coat. Tech., 232 (2013) 22-25.

DOI: 10.1016/j.surfcoat.2013.04.047

[8] T. Hassan, L. Taleb, S. Krishna, Influence of non-proportional loading on ratcheting responses and simulations by two recent cyclic plasticity models, Int. J. Plasticity, 24 (2008) 1863-1889.

DOI: 10.1016/j.ijplas.2008.04.008

[9] L. Taleb, Georges Cailletaud, Experimental and numerical analysis about the cyclic behavior of the 304L and 316L stainless steels at 350 °C, Int. J. Plasticity, 61 (2014) 132-48.

DOI: 10.1016/j.ijplas.2014.05.006

[10] S. Taheri, A. Hauet, L. Taleb, C. Kpodekon, Micro–macro investigations about the fatigue behavior of pre-hardened 304L steel, Int. J. Plasticity, 27 (2011) 1981-(2004).

DOI: 10.1016/j.ijplas.2011.06.004

[11] L. Taleb, G. Cailletaud, An updated version of the multimechanism model for cyclic plasticity, Int. J. Plasticity, 26 (2010) 859-874.

DOI: 10.1016/j.ijplas.2009.11.002

[12] A. Belattar, Analyses multi-échelles du comportement et la durée de vie d'aciers inoxydables 304L sous sollicitations cycliques avec pré-écrouissage, Thèse de Doctorat, (2013) INSA de Rouen.

[13] J. Rus, C. Luis De Leal, D. N. Tsipas, Boronizing of 304 steel, J. Mater. Sci. Lett., 4 (1985) 558-560.

DOI: 10.1007/bf00720032

[14] G. Palombarini, M. Carbucicchio, On the morphology of thermochemically produced Fe2B/Fe interfaces, J. Mater. Sci. Lett., 3 (1984) 791-794.

DOI: 10.1007/bf00727975

[15] O. Allaoui, N. Bouaouadja, G. Saindernan, Characterization of boronized layers on XC38 steel, Surf. Coat. Tech., 201 (2006) 3475–3482.

DOI: 10.1016/j.surfcoat.2006.07.238

[16] K. Mouedden, A. Belattar, L. Taleb, Analyse sur la disparité expérimentale sur le comportement et la fatigue d'acier inoxydable 304L, Congrès Algérien de Mécanique, 25-29 Oct. (2015), El Oued, Algérie.