Answering Exams

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__________?

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__________?

A. Pinhole porosity
B. Gas inclusion porosity
C. Micro porosity
D. Subsurface porosity (Correct)

 

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