| Popis: |
The present investigation, influence of different heat treatment processes which will yield better tensile strength and microstructures of 8-mm-thick plates metal inert gas welded IS2062-EN9 joint. Mechanical properties of the joint increased with annealing heat treatment processes, higher grain size was measured at welded zone, and it decreased. It is found that the joint fabricated at a low heat input condition showing excellent mechanical and metallurgical properties. After annealing heat treatment process, tensile strength improved around 14.52%, the pearlite phase increased from 36.75 to 47.15%, and ferrite phase has decreased from 59.36 to 50.61% and other decreased from 3.88 to 2.24%. The tensile strength is improved due to grain size that was observed to be 7.5 before heat treatment and 9 after annealing heat treatment, and ferrite phase is transformed into pearlite phase. |
