28-60 CERCETĂRI PRIVIND CALITATEA ÎMBINĂRILOR SUDATE DIN OȚEL TERMOREZISTENT
RESEARCH OF WELDED JOINTS HEAT-RESISTANT STEEL
Alloy and not alloy steels, with specified elevated temperature shall be prepared in accordance with SR EN 10216 – 2 + A2 – 2008 Standard. Structural examinations and mechanical tests performed on weld heat-resistant steels have shown the possibility of establishing, with some degree of certainty, the correlations between the type of microstructure and mechanical characteristics.
Solid solution hardening due to the presence of dislocations, the precipitating and foreign atoms from the network, represent a very important element to be taken into account in determining the structural and mechanical properties of heat-resistant alloy and not alloy steels wieldable.
Keywords: heat resistant steel, welded joint quality, mechanical stress, creep, ductility
Cuvinte cheie: oțel termorezistent, calitatea îmbinării sudate, solicitări mecanice, fluaj, ductibilitate