(a)
Interpretation:
The liquidus temperature for Nb-W alloy is to be determined.
Concept Introduction:
On the temperature-time graph of an alloy, the first point where the deflection or the change in the slope of the cooling curve is seen is the liquidus temperature of that alloy. This is where the first crystals in the alloy can coexist with its melt in the
(b)
Interpretation:
The solidus temperature for Nb-W alloy is to be determined.
Concept Introduction:
On the temperature-time graph of an alloy, the second point where the deflection or the change in the slope of the cooling curve is seen is the solidus temperature of that alloy at which the crystals in the alloy can coexist with its last liquid in the thermodynamic equilibrium.
(c)
Interpretation:
The freezing range for Nb-W alloy is to be determined.
Concept Introduction:
Freezing range for an alloy is the difference of the liquidus and the solidus temperature of an alloy. In this range, the alloy melt starts to crystallize at liquidus temperature and solidifies when reaches solidus temperature.
(d)
Interpretation:
The pouring temperature of the Nb-W alloy is to be determined.
Concept Introduction:
The temperature at which the material is poured into the cast and then allowed to cool thereafter is known as the pouring temperature.
On a cooling curve (temperature-time), pouring temperature is the starting point temperature.
(e)
Interpretation:
The superheat for the given Nb-W alloy is to be determined.
Concept Introduction:
Superheat for a material is defined as the difference in the pouring temperature and the liquidus temperature of the casting material.
(f)
Interpretation:
The local solidification time for the given Nb-W alloy is to be determined.
Concept Introduction:
The time needed to only remove the latent heat of fusion in the casting at a particular location is known as the local solidification time. It is measured from the point of the start of the solidification until the end of it.
(g)
Interpretation:
The total solidification time for the given Nb-W alloy is to be determined.
Concept Introduction:
The time needed to remove the latent heat of fusion as well as the specific heat of the liquid in the casting at a particular location is known as the total solidification time. It is measured from the time of pouring until the end of the solidification.
(h)
Interpretation:
The composition of the given Nb-W alloy is to be determined.
Concept Introduction:
On the temperature-composition graph of an alloy, the curve above which the alloy exist in the liquid phase is the liquidus curve. The temperature at this curve is the maximum temperature at which the crystals in the alloy can coexist with its melt in the thermodynamic equilibrium.
Solidus curve is the locus of the temperature on the temperature composition graph of an alloy, beyond which the alloy is completely in solid phase. The temperature at this curve is minimum, known as solidus temperature at which the crystals in the alloy can coexist with its melt in the thermodynamic equilibrium.
Want to see the full answer?
Check out a sample textbook solution
Chapter 10 Solutions
Essentials Of Materials Science And Engineering
- This question and its solution. Is the solution correct? If the solution is correct, assume that let R2 = 20 and a=500 . If it is wrong, solve it in your own way, away from the sources, and explain to me in detail with a pen and paper, please.arrow_forwardcan you compute the values inside the blue circles using the data from the plan above them? Please disregard the values (data/numbers) inside the circles.arrow_forward2. Find the moment of inertia and radius of gyration about the coordinate axes of a thin rectangular plate of constant density bounded by the lines x=3 and y = 3 in the first quadrant.arrow_forward
- Vehicle begin to arrive at a parking lot at 6:00 am at a rate of 8 per minute. No vehicles arrivefrom from 6:20 to 6:30 am. From 6:30 am on vehicle arrive at a rate of 2 veh/min. The parkinglot attendant processes incoming vehicles at a rate of 4 veh/min throughout day. AssumingD/D/1 queue, determine total vehicle delayarrow_forwardMaterial Sciencearrow_forwardThe average output voltage is found from Vac = = 2 2π/6 3√3 π -V #16 m √√3V™ cos ot d (ot) 0 = 1.654Vm m where Vm, is the peak phase voltage. I want detailed integration steps and how you reached this result.arrow_forward
- Electronic devices found in integrated circuits are composed of very high purity silicon to which has been added small and very controlled concentrations of elements found in Groups IIIA and VA of the periodic table. For Si that has had added 9.1 × 1021 atoms per cubic meter of antimony compute (a) the weight percent and (b) the atom percent of Sb present. (Hint: use Equation 100 C₁ = 1 + NAP2 N1A₁ P2 P1 (a) 0.00636 %wt (b) i 0.0182 %atarrow_forwardUse the binary diagram, 45 line above and material balance to solve the One thousand kg/h of a (50-50 wt%) acetone-in-water solution is to be extracted at 25C in a continuous, countercurrent system with pure 1,1,2-trichloroethane to obtain a raffinate containing 10 wt% acetone. Using the following equilibrium data, determine with an equilateral-triangle diagram: a the minimum flow rate of solvent; b. the number of stages required for a solvent rate equal to 1.5 times minimum, and composition of each streamleaving each stage. Repeat the calculation of (a) and (b) if the solvent used has purity 93wt% (4wr% acetone, 3wt% water impurities) acetone 0.6 water 0.13 1,1,2-trichloroethane 0.27 Raffinate. Weight Fraction Acetone Extract. Weight Fraction Acetone 0.5 0.04 0.46 0.44 0.56 0.4 0.03 0.57 0.29 0.40 0.3 0.02 0.681 0.12 0.18 0.2 0.015 0.785 0.0 0.0 0.1 0.01 0.89 0.55 0.35 0.1 0.5 0.43 0.07 0.4 0.57 0.03 0.3 0.68 0.02 0.2 0.79 0.01 0.1 0.895 0.005arrow_forwardCase Study Instructions: Offshore Wind Energy in the North Sea For this case study, students will analyze the institutional challenges and social rules surrounding offshore wind energy development in the Dutch North Sea, as explored in the case study from the textbook (pages 44-46). Additional resources in this week’s learning module will provide further perspectives on the impact of wind energy on different stakeholders. Students should refer to the syllabus for specific guidelines regarding length, format, and content requirements. Reflection Questions to Consider: What are the key institutional challenges in implementing offshore wind energy in the North Sea? How do formal and informal social rules shape the use of this shared space? What conflicts arise between different stakeholders (e.g., fishermen, naval transport, military, and wind energy developers)? How can policymakers balance economic, environmental, and social considerations when allocating space for wind energy?…arrow_forward
MATLAB: An Introduction with ApplicationsEngineeringISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons Inc
Essentials Of Materials Science And EngineeringEngineeringISBN:9781337385497Author:WRIGHT, Wendelin J.Publisher:Cengage,
Industrial Motor ControlEngineeringISBN:9781133691808Author:Stephen HermanPublisher:Cengage Learning
Basics Of Engineering EconomyEngineeringISBN:9780073376356Author:Leland Blank, Anthony TarquinPublisher:MCGRAW-HILL HIGHER EDUCATION
Structural Steel Design (6th Edition)EngineeringISBN:9780134589657Author:Jack C. McCormac, Stephen F. CsernakPublisher:PEARSON
Fundamentals of Materials Science and Engineering...EngineeringISBN:9781119175483Author:William D. Callister Jr., David G. RethwischPublisher:WILEY