Dry Sliding Wear Behavior of Super Duplex Stainless Steel AISI 2507: a Statistical Approach

Abstract

The dry sliding wear behavior of heat-treated super duplex stainless steel AISI 2507 was examined by taking pin-on-disc type of wear-test rig. Independent parameters, namely applied load, sliding distance, and sliding speed, influence mainly the wear rate of super duplex stainless steel. The said material was heat treated to a temperature of 850°C for 1 hour followed by water quenching. The heat treatment was carried out to precipitate the secondary sigma phase formation. Experiments were conducted to study the influence of independent parameters set at three factor levels using the L 27 orthogonal array of the Taguchi experimental design on the wear rate. Statistical significance of both individual and combined factor effects was determined for specific wear rate. Surface plots were drawn to explain the behavior of independent variables on the measured wear rate. Statistically, the models were validated using the analysis of variance test. Multiple non-linear regression equations were derived for wear rate expressed as non-linear functions of independent variables. Further, the prediction accuracy of the developed regression equation was tested with the actual experiments. The independent parameters responsible for the desired minimum wear rate were determined by using the desirability function approach. The worn-out surface characteristics obtained for the minimum wear rate was examined using the scanning electron microscope. The desired smooth surface was obtained for the determined optimal condition by desirability function approach.

Tribological Characterization of Ni-Free Duplex Stainless Steel Alloys Using the Taguchi Methodology

“…Untreated AISI 316 austenitic stainless steel 0.2 5, 10, 20 0.00017-0.00020 [29] Untreated AISI 304 austenitic stainless steel 0.044 up to 20 0.00009-0.000102 [30] Super Duplex Stainless Steel AISI 2507 2, 4, 6 20, 40, 60 1.656-2.99 [31] Duplex stainless steel 0.1, 0.2, 0.3 20, 25, 30 0.00006-0.00014 Current work…”

Effect of Embrittlement on the Microstructure, Mechanical and Wear Properties of Aged Super Duplex Stainless Steel

“…The specimens for microscopic study were prepared using standard metallographic techniques [10,11]. Microstructure analysis was carried out on the heat treated specimens using scanning electron microscope.…”

“…Further, the profundity of plastic disfigurement may increment and structures the tribological layer and this layer has been observed more beyond 4 m/s, accordingly separating the normal thickness of the debris. This diminishes the measure of entangled debris, which is to be oxidized, accordingly prompting the progress [4,11].…”

Finite Element Wear Behaviour Modeling of Super duplex stainless steel AISI 2507 Using Ansys

“…the contact pressure and frictional stresses developed and the relative progressive change occurred in the surface geometry due to material removal in three dimensional components. Many authors have reported the use of finite element analysis to simulate and predict the wear [11][12][13][14][15][16][17][18][19]. Feasibly the most conclusive way to authenticate the FEM results is to compare them with the known experimental results.…”