2725MedicalMedium
The porosity formed due to simultaneous nucleation of solid grains and gas bubbles at the first moment that metal freezes at the mold walls is called________?
AMicro porosity
BPinhole porosity
CGas inclusion porosity
DSubsurface porosity
Correct answer
D. Subsurface porosity
Explanation
The correct answer is Subsurface porosity.