The Effect of Ferrite Ratio on the Properties of PWHT Overlaid Welds

Duplex SS 육성 용접부의 물성에 미치는 열처리전 페라이트 함량의 영향

Several duplex overlaied-weldments which have different ferrite ratio were prepared by changing welding heat input ant post weld heat treatment were carried out to understand the effect of the ferrite ratio on the precipitation during post weld heat treatment. High heat input weldment indicated low ferrite ratio, while low heat input weldment has high ferrite ratio. Low ferrite ratio weldment showed much and faster precipitation. But high ferrite ratio weldment showed less and slower precipitation.