For a Fe-C alloy with a eutectoid composition, an austenite was rapidly cooled down to 450°C, held for 10 sec, and quenched to room temperature. What is thefinal microstructure based on its TTT curve?AmountTemperature of Transformation, C700600500400300200Ae₂!Ae₁Austenite unstableMs.10 10² 103 104 105 secondsAustenite stable50%-100 MFTELEPP100% completedF+BCoarse Pearlite- Fine Pearlite-Upper Bainite(Feathery)Lower Bainite→ Martensite+ BainiteMartensite11sec 1 min1hrTransformation Time (Log. Scale)O a. 50% bainite and 50% martensiteO b.50% austenite and 50% bainiteO c.100% bainiteO d. 100% martensiteFiner LamellacBainitic Pearlitic AusteniteFine more AcicularRapid EtchingMartensiticcicular,Slow EtchingV.P.H.210320450700750

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For a Fe-C alloy with a eutectoid composition, an austenite was rapidly cooled down to 450°C, held for 10 sec, and quenched to room temperature. What is the final microstructure based on its TTT curve? Temperature of Transformation, C 700 600 500 400 300 Aes Aer 10 10² 10³ 104 105 seconds T Austenite stable 200 50%- 100 ME 675 P 100% completed 1 1sec F+B Coarse Pearlite - Fine Pearlite -Upper Bainite (Feathery) Lower Bainite Martensite +Bainite L Martensite 1min 1hr Transformation Time (Log. Scale) O a. 50% bainite and 50% martensite O b. 50% austenite and 50% bainite O c. 100% bainite O d. 100% martensite Fine more Acicular Rapid Etching Bainitic Pearlitic A Slow Etching Martensitic V.P.H. 210 320 450 700 750

For a Fe-C alloy with a eutectoid composition, an austenite was rapidly cooled down to 450°C, held for 10 sec, and quenched to room temperature. What is the final microstructure based on its TTT curve? Temperature of Transformation, C 700 600 500 400 300 Aes Aer 10 10² 10³ 104 105 seconds T Austenite stable 200 50%- 100 ME 675 P 100% completed 1 1sec F+B Coarse Pearlite - Fine Pearlite -Upper Bainite (Feathery) Lower Bainite Martensite +Bainite L Martensite 1min 1hr Transformation Time (Log. Scale) O a. 50% bainite and 50% martensite O b. 50% austenite and 50% bainite O c. 100% bainite O d. 100% martensite Fine more Acicular Rapid Etching Bainitic Pearlitic A Slow Etching Martensitic V.P.H. 210 320 450 700 750

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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