Answer:
a. students participate and apply engineering principles
Explanation:
We can rule out option B because the question states students are working in groups.
We can rule out option C because following directions, while appropriate, is not a benefit from STEM education specifically.
We can rule out option D because students are building off of a current design, not creating a new product.
Answer:
A recrystallization process differs mainly from a restoration process (microestructures of a cold worked sample) in that the first, the microstructure of the final product consists mainly of high angle borders.
Explanation:
The microstructure of a cold worked material has a high energy stored in dislocations and subgrains. During a heat treatment, this microstructure evolves in order to achieve a more stable state by reducing its energy. The complex microscopic mechanisms that take place during this process have been traditionally encompassed in three categories: restoration, recrystallization and grain growth, which will be discussed later.
These processes generally lead to the total or partial recovery of the original properties of the material (ductility, resistance). They can take place under dynamic conditions, that is, during thermomechanical processing or when the material is subsequently deformed at high temperature, and under static conditions, that is, during a heat treatment after thermomechanical processing.
The term <em>restoration</em> encompasses the following succession of micromechanism: formation of dislocation cells, annihilation of dislocations within them, formation of subgrains and their growth.
<em>A recrystallization process differs mainly from a restoration process in that in the first one the microstructure of the final product is mainly formed by high-angle borders.</em>
uhh , not all girls are like that. many of em these days are more career oriented and thats good i guess , so if anything ur just being judgy a f here.
Answer:
2132hp ed enregia
e
Explanation:
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