Effect of Alloying Elements on Notch Toughness of Basic Weld Metals (Report 1)

There are many variables which affect impact resistance of weld metals.In this report we have attempted to obtain quantitative effects of silicon on the notch toughness of pearlitic weld metals. By varying ferro-silicon amounts of welding flux we can adjust the amounts of silicon of the weld metals. Ten specimens thus obtained were investigated.During deoxidizing process is continuing, silicon raises maximum energy, and shifts transition curves to lower temperature by reducing oxygen contents of weld metals. Then after the completion of deoxidation addition of silicon reqularly raises transition temperature, lowers maximum energy and widens transition range.