EFFECT OF PRE-HEAT TREATMENT ON FATIGUE BEHAVIOR OF SEVERE SHOT PEENED AND PLASMA NITRIDED AISI 4140 STEEL
Keywords:
Severe Shot Peening, Plasma Nitriding, Fatigue, FWHM, Ultrafine Grain LayerAbstract
In this study, the pre-heat treatment applications (annealing, normalizing, oil quenching, tempering) influence is to be determined on the fatigue behavior of mechanically and thermally surface treated AISI 4140 low alloy steel. The plastically deformed, ultra fined and oriented grain layer has been created by means of severe shot peening and improved by pulsed plasma nitriding. The specimens were characterized by optical, scanning electron microscopy, X-ray diffraction and full width at half maximum (FWHM) analysis. The surface is investigated by surface roughness measurements before the understanding fatigue behavior of the specimens under different pre-heat treatments. The results demonstrate severe shot peening and plasma nitriding improves the fatigue limit of the material effectively. Also the combination of the treatments provides comparable fatigue limit of the annealed and normalized specimens compared to tempered one.
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[2] Czerwinski F., (2012) Heat Treatment- Conventional and Novel Applications Croatia: InTech.
[3] Mylonas, G. I., Labeas, G., (2011). "Numerical modelling of shot peening process and corresponding products: Residual stress, surface roughness and cold work prediction". Surface and Coatings Technology,Vol. 205, pp. 4480-4494.
[4] Amanov, A., Pyun, Y.-S.,Sasaki, S., (2014). "Effects of ultrasonic nanocrystalline surface modification (UNSM) technique on the tribological behavior of sintered Cu-based alloy". Tribology International, Vol. 72, pp. 187-197.
[5] Unal, O., (2016). "Optimization of shot peening parameters by response surface methodology". Surface and Coatings Technology, Vol. 305, pp. 99-109.
[6] Unal, O., Zulcic, I., Varol, R., Karademir, I.,Ates, S., (2016). "Novel Type Shot Peening Applications on Railway Axle Steel". Journal of Mineral Metal and Material Engineering, Vol. 2, pp. 1-5.
[7] Unal, O.,Varol, R., (2017). "Surface Nanostructuring of AISI 1017 by Severe Shot Peening". Research and Reports on Metals, Vol. 1, pp. 1-4.
[8] Hassani-Gangaraj, S. M., Moridi, A., Guagliano, M.,Ghidini, A., (2014). "Nitriding duration reduction without sacrificing mechanical characteristics and fatigue behavior: The beneficial effect of surface nano-crystallization by prior severe shot peening". Materials & Design, Vol. 55, pp. 492-498.
[9] Lin, Y., Lu, J., Wang, L., Xu, T.,Xue, Q., (2006). "Surface nanocrystallization by surface mechanical attrition treatment and its effect on structure and properties of plasma nitrided AISI 321 stainless steel". Acta Materialia, Vol. 54, pp. 5599-5605.
[10] Shen, L., Wang, L., Wang, Y.,Wang, C., (2010). "Plasma nitriding of AISI 304 austenitic stainless steel with pre-shot peening". Surface and Coatings Technology, Vol. 204, pp. 3222-3227.
[11] Starke, P., Walther, F.,Eifler, D., (2009). "New fatigue life calculation method for quenched and tempered steel SAE 4140". Materials Science and Engineering: A, Vol. 523, pp. 246-252.
[12] Bagherifard, S., Fernández Pariente, I., Ghelichi, R.,Guagliano, M., (2010). "Fatigue properties of nanocrystallized surfaces obtained by high energy shot peening". Procedia Engineering, Vol. 2, pp. 1683-1690.
[13] Bagherifard, S.,Guagliano, M., (2012). "Fatigue behavior of a low-alloy steel with nanostructured surface obtained by severe shot peening". Engineering Fracture Mechanics, Vol. 81, pp. 56-68.
[14] Miková, K., Bagherifard, S., Bokuvka, O., Guagliano, M.,Trško, L., (2013). "Fatigue behavior of X70 microalloyed steel after severe shot peening". International Journal of Fatigue, Vol. 55, pp. 33-42.
[15] Wang, Y. Y., Sun, X., Wang, Y. D., Hu, X. H.,Zbib, H. M., (2014). "A mechanism-based model for deformation twinning in polycrystalline FCC steel". Materials Science and Engineering: A, Vol. 607, pp. 206-218.
[16] Unal, O.,Varol, R., (2015). "Surface severe plastic deformation of AISI 304 via conventional shot peening, severe shot peening and repeening". Applied Surface Science, Vol. 351, pp. 289-295.
[17] Lv, Y., Lei, L.,Sun, L., (2015). "Effect of shot peening on the fatigue resistance of laser surface melted 20CrMnTi steel gear". Materials Science and Engineering: A, Vol. 629, pp. 8-15.
[18] Ebrahimi, M., Sohi, M. H., Raouf, A. H.,Mahboubi, F., (2010). "Effect of plasma nitriding temperature on the corrosion behavior of AISI 4140 steel before and after oxidation". Surface and Coatings Technology, Vol. 205, pp. 261-266.
[19] Çelik, A.,Karadeniz, S., (1995). "Improvement of the fatigue strength of AISI 4140 steel by an ion nitriding process". Surface and Coatings Technology, Vol. 72, pp. 169-173.
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