49- What is Frenkel error?
49- What is Frenkel error?
A) intermediate place atom
B) atomic vacuum
C) slip
D) ion farm gap
E) displaced ion
•50- What is the typical grain structure of a pure metal after casting?
A) Fine grains on the mold walls and fine columnar grains prevented from the casting center at the bottom
B) Fine grained coaxial grains on the mold walls and coarse columnar grains oriented to the casting center on the inside
C) fine-grained work-axis grains on the mold walls and fine columnar grains oriented to the casting center in the interior
D) Coarse grained coaxial grains on the suitor walls and fine columnar grains oriented to the casting center in the interior
E) Coarse grain coaxial grains on the mold walls and coarse columnar grains regenerated into the casting center on the insides
51) Which is a disadvantage in manufacturing?
A) high fly swatter
B) high shapeability
C) low yield strength
D) high elastic modulus
E) low tensile strength
Step by step
Solved in 2 steps
