Solid Particle Erosion Behaviour of Martensitic and Nitrogen Alloyed Austenitic Stainless Steel

Abstract:

In the present work, comparison of solid particle erosive behaviour of 13/4 steel and Nitrogen alloyed austenitic stainless steel (23/8N steel) have been studied using air jet erosion testing. Air jet erosion testing has been performed at various angles for as received samples at 31 m/s velocity and a discharge rate of 3 gm per minute by alumina particles with angular shape and 53-63μm size. Microstructure, eroded surface characteristics, mechanical properties and erosion rate are characterized by using scanning electron microscope, hardness and tensile testing. 23/8N steel shows good hardness coupled with high tensile toughness and work hardening ability, which leads to improved erosion resistance. The surface morphology analysis of the worn out surfaces, cumulative weight loss measurements and steady state of erosion rate results were used to understand the effect of nitrogen on the degradation mechanisms. The results show that 23/8N steel exhibits excellent resistance to erosion in comparison to13/4 steel.

• Periodical: Advanced Materials Research (Volume 1043)
• Pages: 45-49
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1043.45
• Online since: October 2014
• Authors: Ashish Selokar, Ravi Kant, D.B. Goel, U. Prakash*
• Keywords: Air Jet Erosion Testing, Mechanical Property, Nitrogen Alloyed Steel, Tensile Toughness

References

[1] D.B. Goel, in: Metallurgy of erosion of underwater parts in hydro electric projects, Proc. of 3rd Inter. Conference on silting problems in hydro power projects, New Delhi (2008), p.27.

[2] ASM Handbook: Friction, wear and lubrication and wear tech., Vol. 18, ASM international, U.S. (1992).

[3] E. Ness and R. Zibbell: Wear Vol. 196 (1996), p.120.

[4] B.S. Mann: Wear Vol. 217 (1998), p.56.

[5] B.S. Mann: Wear Vol. 237 (2000), p.140.

[6] I. Finnie: Wear Vol. 3 (1960), p.87.

[7] M. Divakar, V.K. Agarwal and S.N. Singh: Wear Vol. 259 (2005), p.110.

[8] P. Bahejati, A. Kermanpur and A. Najafizadeh: Mate. Sci. & Eng. A Vol. 588 (2013), p.43.

[9] Y. Ikegami and R. Nemoto: ISIJ Int. 36 Vol. (1996), p.855.

[10] A. Selokar, D.B. Goel and U. Prakash: Advanced Materials Research, Vol. 585 (2012) p.554.

[11] ASTM E8M-09, Standard test methods for tension testing of metallic materials, West Conshohocken, PA (2011).

[12] ASTM E 23-07, Standard test methods for notch bar impact testing of metallic materials, West Conshohocken, PA (2011).

[13] ASTM G 32-10, Standard Test Method for Conducting Erosion Tests by Solid Particle Impingement Using Gas Jets, West Conshohocken, PA (2011).

DOI: 10.1520/g0076-04