Weldability investigation steel P 91 by weld thermal cycle simulation

Abstract

This paper elaborates results of hardness and impact energy of thermal cycle simulated specimens of high-alloy steel P 91 and their dependence on cooling time from 800 to 500 °C. Results were obtained by measuring hardness HV 1 and by experimental testing of Charpy notched specimens. Metallographic analysis of samples was performed on scanning electronic microscope.

Keywords

• welding
• P 91
• hardness
• impact energy
• cooling