Influence of direct current (DC) on hardness of weld stainless steel coating - A model for mild steel repair

M. N. Muigai, E. T. Akinlabi, F. M. Mwema*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)


This paper presents the effects of TIG direct current (DC) on the hardness of mild steel samples coated with stainless steel. The coating was undertaken using TIG welding using stainless steel welding rods. The hardness of the coated samples was analyzed using a Digital Rockwell hardness Tester. The hardness test was carried out across the coated samples from the substrate to the coating region. The data obtained when hardness was measured is presented and discussed in this article. The relationship between DC welding current and hardness is also discussed. From the results, the hardness of the coated samples increased from the substrate towards the coating surface. It was also shown that hardness and DC current of the TIG system exhibit an inverse relationship.

Original languageEnglish
Pages (from-to)1133-1135
Number of pages3
JournalMaterials Today: Proceedings
Issue numberPart 1
Early online date18 Dec 2020
Publication statusPublished - 27 Apr 2021
Externally publishedYes
Event11th International Conference on Materials Processing and Characterization - Indore, India
Duration: 15 Dec 202017 Dec 2020

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