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Engineering Material
Test 3 Short Answer
Question | Answer |
---|---|
What are the 3 limitations of Ferrous Alloys | High Density Poor Corrosion Resistance Poor Conductivity |
What are the 3 reason iron/steel is widely used worldwide? | It's Abundant Economic Versatile |
How is Annealing Temperature defined? | The temperature that a material needs to be held at one hour for in order for it (the material) to completely recrystallize. |
Give a summary of the possible transformations of Steels | Start with Austenite (γ) -slow cool, Pearlite (⍺+Fe_3C layers+proeutectoid phase) -moderate cool, Bainite (⍺+elong. Fe_3C particles) -rapid quench, Martensite (BCT phase, diffusionless transformation) If reheat, Temp. Mart. (⍺+FINE Fe_3C particles) |
List the possible transformations of steel in order from strongest to most ductile. | Martensite Tempered Martensite Bainite Fine Pearlite Coarse Pearlite Spherodite |
What are the Modulus of Elasticity for Steel and Aluminum (approximately) for USCS units? | 30 Mpsi, 10 Mpsi, respectively |