the critical temperatures of a thermomechanical process have a great importance for the final microstructure and mechanical properties of high strength low alloy steels. in this study, the average scheduling was used to determine the critical temperatures of api x70 steel. this steel is extensively used in iran for large diameter, high-pressure gas transportation pipelines as well as the oil tr...

Wire and arc additive manufacturing (WAAM) has been attracting industrial attention due to its high productivity flexibility. However, fatigue life data of WAAM HSLA steel is scarce. In this study, the mechanical properties thin-walled parts fabricated by were assessed via non-destructive destructive testing, providing a comprehensive analysis on material’s behaviour. The conditions have more p...

Alloy ASTM A710 (HSLA-80) is a co-precipitation hardened steel with a desirable combination of mechanical properties and weldability, making it an excellent candidate for use in structural applications such as bridges, shipbuilding, and pipelines. There have been extensive studies of the strengthening mechanisms, effect of heat treatment and continuous cooling, and kinetics of the precipitation...

High-strength, low-alloy (HSLA) steel has attracted much attention in the manufacturing industry because of its good combination high strength and toughness, low cost, formability. Wire arc additive (WAAM) technology can realize rapid prototyping HSLA parts. This study investigated a 26-layer component fabricated with WAAM technique. The microstructure deposited wall ER120S-G is mainly acicular...