The Influence of Nickel and Nitrogen on Impact Toughness Properties of Low Alloy Basic Electrode Steel Deposits

摘要

Nitrogen and nickel are regarded as the main factors effecting on mechanical properties and metalographical structure of low alloy welds. However there is different influence of those two elements on mechanical properties of welds. The influence of the variable amounts of nickel and nitrogen on impact properties of different basic electrode deposits were tested. Furthermore, on the basis of the results of the influence of the variable amounts of nitrogen and nickel on impact properties of low alloy basic electrode deposits, mathematical equations regarding those relationships have been given assuming that oxygen content and acicular ferrite in basic electrode deposits are nearly constant and amount of each is respectively 350-450 ppm of oxygen and above 700 of acicular ferrite.