Investigation of Changes in Mechanical Properties and Microstructures of Mild Steel Joint by Oxy-Hydrogen Welding

• Date: 2014
• Main Authors: Ates, H., Cakır, M.E., Kurt, A., Uygur, I., Turker, M.
• Format: Article
• Language: English
• Published: Інститут металофізики ім. Г.В. Курдюмова НАН України 2014
• Series: Металлофизика и новейшие технологии
• Subjects: Физика прочности и пластичности
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/107048
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Investigation of Changes in Mechanical Properties and Microstructures of Mild Steel Joint by Oxy-Hydrogen Welding / H. Ates, M.E. Cakır, A. Kurt, I. Uygur, M. Turker // Металлофизика и новейшие технологии. — 2014. — Т. 36, № 11. — С. 1561-1569. — Бібліогр.: 16 назв. — англ.

In this paper, in order to see weldability behaviour of mild steels joint by the oxy-hydrogen welding technique, an investigation of changes in mechanical properties and microstructures of mild steel is carried out. The specimens with 1.5 mm thickness and 125 mm length are welded by using both the oxyhydrogen and oxy-acetylene gases. Microstructural analysis is carried out on the cross sectional area of the welding zone in order to compare the changes in weld metals and the heat affected zones in terms of the welding gases. Experimental results of the tensile strength and microhardness obtained with mechanical tests show that samples welded with oxy-acetylene exhibited 10% higher yield strength than that of the samples welded with oxy-hydrogen. However, the oxy-hydrogen welding technique can be used as an alternative to the oxy-acetylene welding, since it has advantageous of being clean and economic.