Surface modification of HSLA steel and its fracture behavior

Abdullrhman Hossin, Musa and Maleque, Md. Abdul and Ali, Mohammad Yeakub (2016) Surface modification of HSLA steel and its fracture behavior. In: 3rd International Conference on Mechanical, Automotive and Aerospace Engineering (ICMAAE 2016), 25th-27th July 2016, Kuala Lumpur, Malaysia. (Unpublished)

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Abstract

The use of a tungsten inert gas (TIG) welding torch process has resulted in the development of an economical route for surface engineering of alloys known as surface modification giving similar results to the more expensive high power laser process. Due to the preheating generated by this process, the extent of the temperature rise is sufficient to produce significant changes to the preplaced high melting point powders on the surface in terms of microstructure and mechanical properties. In this present study, the surface of high strength low alloy (HSLA) steel was surface modified with the preplacement of pure Titanium (Ti) powder using a tungsten inert gas (TIG) arc heat source, at 100 ampere current with a voltage 30 V and a constant traversing speed of 1.0 mm/s using Argon shielded gas. The effect of preplaced Ti powder on the strength and toughness properties of the modified HSLA steel surface was investigated. The results indicated that the tensile and yield strength of HSLA steel decreased by ~12% and ~14%, respectively. While the impact toughness increased by ~33% and the ductility decreased by ~50%. The fractography analysis results by scanning electron microscopy (SEM) were also presented in this paper.

Item Type:	Conference or Workshop Item (Plenary Papers)
Additional Information:	6103/51665
Uncontrolled Keywords:	high strength low alloy steels (HSLA), TIG technique, Ti powder, toughness, fractography
Subjects:	T Technology > T Technology (General) > T54 Industrial safety T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction 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. Md Abdul Maleque
Date Deposited:	18 Aug 2016 14:33
Last Modified:	01 Feb 2017 17:03
URI:	http://irep.iium.edu.my/id/eprint/51665

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