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DOI 10.1515/jmsp-2012-0007   J. Manuf. Sci. Prod. 2014; 14(1): 1 – 11 Kondapalli Siva Prasad*, Chalamalasetti Srinivasa Rao and Damera Nageswara Rao A Review on Welding of AISI 304L Austenitic Stainless Steel Abstract: AISI 304L is an austenitic Chromium-Nickel stainless steel offering the optimum combination of cor- rosion resistance, strength, and ductility. These attributes make it a favorite for many mechanical switch compo- nents. The low carbon content reduces susceptibility to carbide precipitation during welding. In the present paper a thorough

J. Manuf. Sci. Prod., Vol. 12 (2012), pp. 95–103 Copyright © 2012 De Gruyter. DOI 10.1515/jmsp-2012-0006 Study on Effect of Welding Speed on Micro Structure and Mechanical Properties of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets Kondapalli Siva Prasad,1; Chalamalasetti Srinivasa Rao2 and Damera Nageswara Rao3 1 Assistant Professor, Department of Mechanical Engi- neering, Anil Neerukonda Institute of Technology & Sci- ences, Visakhapatnam, India 2 Associate Professor, Department of Mechanical Engi- neering, AU College of Engineering, Andhra University

DOI 10.1515/jmsp-2012-0031   J. Manuf. Sci. Prod. 2013; 13(1–2): 15 – 23 Kondapalli Siva Prasad*, Chalamalasetti Srinivasa Rao and Damera Nageswara Rao Effect of Welding Parameters on Pitting Corrosion Rate in 3.5N NaCl of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets Abstract: Austenitic stainless steel sheets have gathered wide acceptance in the fabrication of components, which require high temperature resistance and corrosion resis­ tance, such as metal bellows used in expansion joints in  aircraft, aerospace and petroleum industry. In case of


In the paper, the passive surface layers of AISI 304L after standard (EP50) and very-high-current density electropolishing (EP1000) in a mixture of orthophosphoric and sulfuric acids in a 1:4 ratio, are presented. The main finding of the presented studies is enrichment of the steel surface film in chromium: total chromium to total iron ratio was equal to 6.6 after EP50 and to 2.8 after EP1000; on the other hand, chromium compounds to iron compounds ratio was equal to 10.1 after EP50, and 3.9 after EP1000.

J. Manuf. Sci. Prod. 2014; 14(2): 79 – 85 Kondapalli Siva Prasad*, Chalamalasetti Srinivasa Rao and Damera Nageswara Rao Multi-objective Optimization of Weld Bead Geometry Parameters of Pulsed Current Micro Plasma Arc Welded AISI 304L Stainless Steel Sheets Using Enhanced Non-dominated Sorting Genetic Algorithm Abstract: Pulsed Current Plasma Arc Welding (PCPAW) is one of the most widely used welding processes in sheet metal manufacturing industry. In any fusion arc welding process, the weld bead geometry plays an important role in determining the (Received: 18 February, 2009; published: 23 June, 2011) Abstract: The wear and friction performance of GUR 1020 grade ultrahigh molecular weight polyethylene (UHMWPE) polymer was studied in distilled water, HASS (Hank’s balanced salt solution) and several protein lubrication environments. Wear tests were carried out using polymer pin -on AISI 304L stainless steel disc apparatus. Tests conditions were room temperature, 40N, 80N and 120N applied loads and 0.5 m/s sliding speed. For the range of load and speed value of this work, the coefficient of friction and

corrosion of carbon steel in marine media: Galvanic coupling and heterogeneity of the corrosion product layer , Corrosion Science, Vol. 111, pp. 583-595, 2016. [5] Refait, Ph., Grolleau, A. M., Jeannin, M., Francois, E., Sabot, R., Corrosion of mild steel at the seawater/sediments interface: Mechanisms and kinetics , Corrosion Science, Vol. 130, pp. 76-84, 2018. [6] Rokosz, K., Hryniewicz, T., Dudek, Ł., Badania porównawcze odporności korozyjnej stali austenitycznej AISI 304L (EN 1.4307) stosowanej do przewozu wybranych płynów , Autobusy: technika, eksploatacja, systemy

.1016/j.arabjc.2012.02.015. 14. Taveria, L. Infl uence of incorporated Mo and Nb on the Mott-Schottky behaviour of anodic fi lms formed on AISI 304L. Corros. Sci. 2010, 52, 2813-2818. 15. Gomes, W. Impedance spectroscopy at semiconductor electrodes: revies and recent developments. Electrochim. Acta 1996, 41, 967-973. 16. Zhang, G. Micro-electrochemical characterization and Mott-Schottky analysis of corrosion of welded X70 pipeline steel in carbonate/bicarbonate solution. Electrochim. Acta 2009, 55, 316-324.

.R.G., Guha B., Nordberg H. (2002), Influence of weld geometry and process on fatigue crack growth characteristics of AISI 304L cruciform joints containing lack of penetration defects, Sci. Technol. Weld Join. , 7(5), 306–312. 22. Singh P.J., Guha B., Achar D.R.G. (2003), Fatigue life prediction using two stage model for AISI 304L cruciform joints, with different fillet geometry, failing at toe, Sci. Technol. Weld. Join. , 8(1), 69–75. 23. Sonsino C.M., Fricke W, de Bruyne F., Hoppe A., Ahmadi A., Zhang G. (2012), Notch stress concepts for the fatigue assessment of

REFERENCES 1. Rokosz K., Hryniewicz T., Simon F., Rzadkiewicz S.: Comparative XPS analysis of passive layers composition formed on AISI 304 L SS after standard and high-current density electropolishing. Surf. Interface Analysis 47 (2015), 87–92. 2. Rokosz K., Lahtinen J., Hryniewicz T., Rzadkiewicz S.: XPS depth profiling analysis of passive surface layers formed on austenitic AISI 304L and AISI 316L SS after high-current-density electropolishing. Surface and Coatings Technology 276 (2015), 516-520. 3. Rokosz K., Hryniewicz T., Raaen S.: Cr/Fe ratio by XPS