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13. Choose the most appropriate type of hardness test (Vickers, Rockwell or Brinell) you would use for each and why: a. A knife blade after heat treatment b. An annealed pipe flange casting Carburized gear tooth с. 14

13. Choose the most appropriate type of hardness test (Vickers, Rockwell or Brinell) you would use for each and why: a. A knife blade after heat treatment b. An annealed pipe flange casting Carburized gear tooth с. 14

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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the diagram, i.e. liquid, alpha (a) phase, beta (B) phase, and the various 2-phase regions. 13. Choose the most appropriate type of hardness test (Vickers, Rockwell or Brinell) you would use for each and why: A knife blade after heat treatment b. An annealed pipe flange casting c. Carburized gear tooth a. 14. Compare and contrast the hardness and ductility of spheroidite, pearlite, and martensite. How would you form each of these microstructures from a 1040 steel? 15. Using a Fe-FeC3 phase equilibrium diagram, explain why a 1070 steel should consist almost entirely of pearlite. On the diagram below, draw a dotted vertical line that would correspond to a 1070 composition. Know the Greek letters for this diagram. ВСС 1400 - Temp .(C) 1200 1153°C 4.2% 1000 - 800 - 740°C ВСС 0.65% 600 - 400 T 1 2 3 4 6. Weight % Radrawn rom ASM Handik Val 3: Allay Phane Dingraa, ASM national 1992, p 2410. .65% carbon held at 20°C: Eutectoid composition: Eutectoid temperature: Eutectic composition: Eutectic temperature: 16. Explain how Jominy test results can be used to validate a particular steel grade for a specific application. Know how to form the different microstructures. Know how to draw diagrams of the defects (substitutional and Interstitial).
Transcribed Image Text:the diagram, i.e. liquid, alpha (a) phase, beta (B) phase, and the various 2-phase regions. 13. Choose the most appropriate type of hardness test (Vickers, Rockwell or Brinell) you would use for each and why: A knife blade after heat treatment b. An annealed pipe flange casting c. Carburized gear tooth a. 14. Compare and contrast the hardness and ductility of spheroidite, pearlite, and martensite. How would you form each of these microstructures from a 1040 steel? 15. Using a Fe-FeC3 phase equilibrium diagram, explain why a 1070 steel should consist almost entirely of pearlite. On the diagram below, draw a dotted vertical line that would correspond to a 1070 composition. Know the Greek letters for this diagram. ВСС 1400 - Temp .(C) 1200 1153°C 4.2% 1000 - 800 - 740°C ВСС 0.65% 600 - 400 T 1 2 3 4 6. Weight % Radrawn rom ASM Handik Val 3: Allay Phane Dingraa, ASM national 1992, p 2410. .65% carbon held at 20°C: Eutectoid composition: Eutectoid temperature: Eutectic composition: Eutectic temperature: 16. Explain how Jominy test results can be used to validate a particular steel grade for a specific application. Know how to form the different microstructures. Know how to draw diagrams of the defects (substitutional and Interstitial).
1. What issues can arise when recycling each of the following and explain how it is typically resolved. a. metals, b. polymers, and c. glass. NOTE: The issues raised can be specific to a material type and do not need to apply to all three. However, note which material would apply to which issues. 2. What criteria would you use to determine if a magazine article is a scholarly source? Know at least 4 criteria. 3. Would covalent or metallic bonding allow for better electrical conductivity? Why? 4. Explain the relationship of slip planes and atomic packing factors on workability of metals. 5. Estimate the grain size of each figure below by using the equation N=2n-1), Show your work. Assume each diagram represents a 1 square inch field at 100X. A B C D. 6. Explain how equiaxed grains can be re-formed in a highly cold worked metal. Include intermediate changes that occur. 7. Assuming that you have a cold worked copper pipe, at what temperature would you estimate that recrystallization should occur? Show your work. Assume the melting temperature of copper is 1,984°F. 8. Would you expect a hypoeutectoid steel or hypereutectectoid steel to produce a higher hardness? Why? 9. How would you expect the carbon content to affect toughness? What is typically the correlation of toughness to hardness? 10. In terms of lattice defects, explain how they affect a materials properties. 11. Draw a diagram of each of the following types of defects: a. substitutional atom, b. interstitial atom, and c. edge dislocation. 12. Draw and label a phase equilibrium diagram for metals A and B that are partially soluble in each other. Label the eutectic point and the various regions/phases of
Transcribed Image Text:1. What issues can arise when recycling each of the following and explain how it is typically resolved. a. metals, b. polymers, and c. glass. NOTE: The issues raised can be specific to a material type and do not need to apply to all three. However, note which material would apply to which issues. 2. What criteria would you use to determine if a magazine article is a scholarly source? Know at least 4 criteria. 3. Would covalent or metallic bonding allow for better electrical conductivity? Why? 4. Explain the relationship of slip planes and atomic packing factors on workability of metals. 5. Estimate the grain size of each figure below by using the equation N=2n-1), Show your work. Assume each diagram represents a 1 square inch field at 100X. A B C D. 6. Explain how equiaxed grains can be re-formed in a highly cold worked metal. Include intermediate changes that occur. 7. Assuming that you have a cold worked copper pipe, at what temperature would you estimate that recrystallization should occur? Show your work. Assume the melting temperature of copper is 1,984°F. 8. Would you expect a hypoeutectoid steel or hypereutectectoid steel to produce a higher hardness? Why? 9. How would you expect the carbon content to affect toughness? What is typically the correlation of toughness to hardness? 10. In terms of lattice defects, explain how they affect a materials properties. 11. Draw a diagram of each of the following types of defects: a. substitutional atom, b. interstitial atom, and c. edge dislocation. 12. Draw and label a phase equilibrium diagram for metals A and B that are partially soluble in each other. Label the eutectic point and the various regions/phases of
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