What would be the primary phase of an alloy that contains 70 wt % Zr at 750 °C? Weight Percent Zirconium 10 20 30 40 50 60 70 80 90 100 2500 2334°C 2130°C L 2000 30.4 1825 C 33.3 1855°C 1715 C 23.5 31 1500 Ru,Zr- 1285°C 1240°C 0.9 33.1 48.2 52 792 (BZ?) 1000 (Ru) 50 417C 9199.4 (azr)- 50 70 80 90 100 Zr 10 20 30 40 60 Ru Atomic Percent Zirconium Select one a Liquid+Ruzr Ob Ruzr Oc Liquid Od azr Oe Bzr Temperature, °C

What would be the primary phase of an alloy that contains 70 wt % Zr at 750 °C? Weight Percent Zirconium 10 20 30 40 50 60 70 80 90 100 2500 2334°C 2130°C L 2000 30.4 1825 C 33.3 1855°C 1715 C 23.5 31 1500 Ru,Zr- 1285°C 1240°C 0.9 33.1 48.2 52 792 (BZ?) 1000 (Ru) 50 417C 9199.4 (azr)- 50 70 80 90 100 Zr 10 20 30 40 60 Ru Atomic Percent Zirconium Select one a Liquid+Ruzr Ob Ruzr Oc Liquid Od azr Oe Bzr Temperature, °C

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Iron oxides can be smelted in a blast furnace by reacting with Cco), which serves as the reducing agent. To supply the needed reducing agent, Ce) is added to the blast furnace and is converted to CO(g) through a sequence of two reactions: Reaction I: C(e) + O2(0) – CO2(9) Reaction II: C(s) + CO2(9) - 2 CO(g) The standard enthalpies of formation at 298 K for CO29) and COg) are -394 kJ/mol and -111 kJ/mol, respectively. Which of the following statements is TRUE? O The overall reaction has an increasing slope when plotted in an Ellingham diagram. O The overall reaction is spontaneous only at high temperatures. O Reactions I and Il are both an exothermic process. Reaction I is exothermic, whereas Reaction II is endothermic.
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An Fe-C alloy with the eutectoid composition has been homogenized at 760°C. Use the time-temperature-transformation diagram below to determine what microstructure would be developed by rapidly cooling to 600°C and holding for 100 seconds, followed by rapid cooling to 400°C and holding for 1000 seconds. followed by quenching to room temperature. Temperature ("C) 800 700 600 500 400 300 200 100 10 Mstart M50%) M90% 1 100% martensite 100 % bainite 10 MV 200 parte 50% pearlite 50% bainito 30² Time to 100% tempered martensite Eutectoid temperature 50% 10² 10
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