Microstructural features of Aisi 430 Ferritic Stainless Steel (FSS) Weld Produced under varying process parameter

Amuda, Muhammed Olawale Hakeem and Mridha, Shahjahan (2009) Microstructural features of Aisi 430 Ferritic Stainless Steel (FSS) Weld Produced under varying process parameter. International Journal of Mechanical and Materials Engineering (IJMME), 4 (2). pp. 160-166. ISSN 1823-0334

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Abstract

the microstructural features of the weld section which are controlled by the energy input and heat transfer factors. The welding current, travel speed and the material property govern these parameters. However, the specific influence of range of heat input rates on the microstructural features of FSS weld is hardly reported. This paper reports the microstructural features of FSS welds produced under different heat input rates. It has been observed that, irrespective of the welding condition, the primary solidification structure changed from a predominantly ferritic structure to a matrix interspersed with increasing fraction of inter-dendritic martensite in the weld metal and grain boundary martensite in the HAZ. The grain morphologies alternates between columnar and equiaxed grains depending on the welding speed within a given current. However, welding speed of 3.5mm/s appears to generally lead to the production of equiaxed grains.

Item Type:	Article (Journal)
Additional Information:	3925/9688
Uncontrolled Keywords:	microstructural features, welding current, welding speed, TIG welding, ferritic stainless steel weld
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN600 Metallurgy
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Prof. Dr. Shahjahan Mridha
Date Deposited:	14 Dec 2011 15:07
Last Modified:	14 Dec 2011 15:08
URI:	http://irep.iium.edu.my/id/eprint/9688

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