(Solution) IET 307 / 307L Materials Science Instructor: Fariborz Tavangarian Department Of Engineering And Technology Management College Of Science And... | Snapessays.com


(Solution) IET 307 / 307L Materials Science Instructor: Fariborz Tavangarian Department of Engineering and Technology Management College of Science and...


i just have some difficulties for doing an assignment. this assignment is related to physics and chemistry and the name of class is materials science . so , if anyone is expert and familiar with materials science class and physics class, just notify me IET 307 / 307L

 

Materials Science

 

Instructor: Dr. Fariborz Tavangarian

 

Department of Engineering and Technology Management

 

College of Science and Technology

 

Morehead State University

 

Midterm Exam Version A

 

Take home exam (open book)

 

For each question, make sure you write the related equations, the procedures, units, how

 

you approach the solution, and explain your answers with figures, etc if needed to receive

 

full point.

 

1.

 

An engineer wants to manufacture a part which should work at high temperature

 

(between 1300 and 1700 °C), have high strength and toughness and resist to any

 

surface crack. From which category of materials (based on the six categories in the

 

book) do you select the materials and why. (1 point)

 

2.

 

Is there any difference between the density of iron with bcc structure and iron with

 

fcc structure? Why? imagine bcc iron and fcc iron has atomic mass of 55.845

 

gram/mol and the Radius of iron is 0.126nm. (2 point)

 

3.

 

Calculate the planar density of atoms in the (121) plane of bcc iron. (3 point)

 

Atomic radius of Fe = 0.126 nm

 

4.

 

In what condition diffraction occurs from radiation of x-ray beams to atoms? (1

 

point)

 

5.

 

Consider that a material is made up of two elements A and B. The bond between A

 

and B is ionic due to coulombic attraction. If the coulombic force of attraction

 

between the two ions is 20.9×10

 

-9

 

N and the Coulombic constant K is -9.22×10

 

-26

 

Nm

 

2

 

/C

 

2

 

compute the separation between the ions A and B. (1 points)

 

6.

 

Sketch the following planes and directions on the unit cell in front of it. Also

 


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