Ferrite Content in the Heat Affected Zone of Duplex Stainless Steels

摘要: In as-delivery state, duplex stainless steels have between 35 to 60 % of ferrite with the rest consisting austenite. This balance is known be a good compromise for maximal corrosion resistance and mechanical properties. When heat affected by welding, phase changes close fusion line. this Heat Affected Zone (HAZ), content increased significantly, leading reduction in use It also important understand issues manage them. As first approach, paper will underline main influential parameters changing show how it can predicted. Additionally, contents achievable on hot rolled plate, HAZ, weld metal highlighted discussed relation standards from oil gas industry.