Grain boundary strengthening of microstructure phases in SS400 structural steel weld zone

Grain boundary strengthening is a method of materials by changing their average crystalize (grain) size, exhibiting the basic relationship between yield stress and grain size materials. This methodology based on observation boundaries that are insurmountable borders for dislocationsand number dislocations located within grain. Applying this to structural steel weld zone, mechanical properties each microstructural phase can be evaluated through values diameter. For zones, there not many methods directly determine mechanicalproperties phases. Thus, in study, was created evaluate equation. constructedby observing determining three phasesin zone (i.e. metal, heat-affected metal). The results from study provide aneasy way engineers, architects, scientists metal SS400 zone.