Optimization of gaseous nitriding process parameters for hard surface layer of duplex stainless steel

Maleque, Md. Abdul and Paijan, Lailatul Harina and Othman, Norinsan Kamil and Rahman, Md Mustafizur (2019) Optimization of gaseous nitriding process parameters for hard surface layer of duplex stainless steel. International Journal of Materials Engineering Innovation, 10 (3). pp. 165-185. ISSN 1757-2754 E-ISSN 1757-2762

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Abstract

The optimization for gaseous nitriding process parameters of duplex stainless steel was performed using Taguchi approach. The nitriding process parameters of temperature, time and gas mixture ratio of NH3 and N2 are considered as input parameters. Three responses are chosen which are surface hardness, wear weight loss and coefficient of friction. The optimum process parameters for surface hardness and coefficient of friction are similar with 550ºC, 16 hour and 0.3 NH3/N2. The study revealed that temperature and time are the most significant factor influencing the responses of nitrided surface of DSS. The formation of hard surface layer contains expanded austenite with thickness layer until 135 µm and maximum hardness of 1440 Hv. The hardness values produced 5 times greater than untreated DSS. The worn surface after wear test has improved with mild wear and smooth abrasion mark.

Item Type:	Article (Journal)
Additional Information:	6103/74213
Uncontrolled Keywords:	optimization, duplex stainless steel, taguchi method, hard surface layer, nitriding
Subjects:	T Technology > T Technology (General) > T11.95 Industrial directories T Technology > T Technology (General) > T173.2 Technological change T Technology > TN Mining engineering. Metallurgy > TN600 Metallurgy T Technology > TN Mining engineering. Metallurgy > TN799.5 Nonmetallic minerals T Technology > TS Manufactures > TS200 Metal manufactures. Metalworking
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Prof Dr. Md Abdul Maleque
Date Deposited:	19 Sep 2019 15:47
Last Modified:	19 Sep 2019 15:48
URI:	http://irep.iium.edu.my/id/eprint/74213

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