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10-21 A Nb-60 wt% W alloy is heated to 2800 °C. Determine (a) the composition of the solid and liquid phases in both wt% and at%; (b) the amount of each phase in both wt% and at%; and (c) assuming that the density of the solid is 16.05 g/cm³ and that of the liquid is 13.91 g/cm³, determine the amount of each phase in vol%. (See Figure 10-19.) 3000 3400 Temperature (°C) 2000 S = (Mg, Fe)O 1000 MgO 20 40 60 L Temperature (°C) 3200 L 3000 2800 2600 2400 80 FeO Nb 20 40 60 α 80 W Weight percent FeO Figure 10-18 The equilibrium phase diagram for the MgO-FeO system (for Problems 10-18, 10-19, 10-26, 10-27, 10-34, and 10-38). The dashed curve represents the solidus for non-equilibrium cooling. (Credit: Cengage Learning 2014) Figure 10-19 Weight percent tungsten The equilibrium phase diagram for the Nb-W system (for Problems 10-21, 10-28, 10-29, 10-30, 10-31, 10-35, 10-37, and 10-40). The dashed curve represents the solidus for non-equilibrium cooling. (Credit: Cengage Learning 2014)

10-21 A Nb-60 wt% W alloy is heated to 2800 °C. Determine (a) the composition of the solid and liquid phases in both wt% and at%; (b) the amount of each phase in both wt% and at%; and (c) assuming that the density of the solid is 16.05 g/cm³ and that of the liquid is 13.91 g/cm³, determine the amount of each phase in vol%. (See Figure 10-19.) 3000 3400 Temperature (°C) 2000 S = (Mg, Fe)O 1000 MgO 20 40 60 L Temperature (°C) 3200 L 3000 2800 2600 2400 80 FeO Nb 20 40 60 α 80 W Weight percent FeO Figure 10-18 The equilibrium phase diagram for the MgO-FeO system (for Problems 10-18, 10-19, 10-26, 10-27, 10-34, and 10-38). The dashed curve represents the solidus for non-equilibrium cooling. (Credit: Cengage Learning 2014) Figure 10-19 Weight percent tungsten The equilibrium phase diagram for the Nb-W system (for Problems 10-21, 10-28, 10-29, 10-30, 10-31, 10-35, 10-37, and 10-40). The dashed curve represents the solidus for non-equilibrium cooling. (Credit: Cengage Learning 2014)

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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10-21 A Nb-60 wt% W alloy is heated to 2800 °C. Determine (a) the composition of the solid and liquid phases in both wt% and at%; (b) the amount of each phase in both wt% and at%; and (c) assuming that the density of the solid is 16.05 g/cm³ and that of the liquid is 13.91 g/cm³, determine the amount of each phase in vol%. (See Figure 10-19.) 3000 3400 Temperature (°C) 2000 S = (Mg, Fe)O 1000 MgO 20 40 60 L Temperature (°C) 3200 L 3000 2800 2600 2400 80 FeO Nb 20 40 60 α 80 W Weight percent FeO Figure 10-18 The equilibrium phase diagram for the MgO-FeO system (for Problems 10-18, 10-19, 10-26, 10-27, 10-34, and 10-38). The dashed curve represents the solidus for non-equilibrium cooling. (Credit: Cengage Learning 2014) Figure 10-19 Weight percent tungsten The equilibrium phase diagram for the Nb-W system (for Problems 10-21, 10-28, 10-29, 10-30, 10-31, 10-35, 10-37, and 10-40). The dashed curve represents the solidus for non-equilibrium cooling. (Credit: Cengage Learning 2014)
Transcribed Image Text:10-21 A Nb-60 wt% W alloy is heated to 2800 °C. Determine (a) the composition of the solid and liquid phases in both wt% and at%; (b) the amount of each phase in both wt% and at%; and (c) assuming that the density of the solid is 16.05 g/cm³ and that of the liquid is 13.91 g/cm³, determine the amount of each phase in vol%. (See Figure 10-19.) 3000 3400 Temperature (°C) 2000 S = (Mg, Fe)O 1000 MgO 20 40 60 L Temperature (°C) 3200 L 3000 2800 2600 2400 80 FeO Nb 20 40 60 α 80 W Weight percent FeO Figure 10-18 The equilibrium phase diagram for the MgO-FeO system (for Problems 10-18, 10-19, 10-26, 10-27, 10-34, and 10-38). The dashed curve represents the solidus for non-equilibrium cooling. (Credit: Cengage Learning 2014) Figure 10-19 Weight percent tungsten The equilibrium phase diagram for the Nb-W system (for Problems 10-21, 10-28, 10-29, 10-30, 10-31, 10-35, 10-37, and 10-40). The dashed curve represents the solidus for non-equilibrium cooling. (Credit: Cengage Learning 2014)
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