1. Determine the composition, in at and 24 wt% carbon. Ti 47.88 g/mol, Cs]2 g/mol. omic...
Q3 3. Determine the composition, in atom percent, of an alloy that consists of 97 wt% aluminum and 3 wt% copper 4. A plate of iron is exposed to a carburizing (carbon-rich) atmosphere on one side and a decarhurizino (carbon-deficient) atmosphere on the other side at 700 °C (1300 °C). If a
Can someone help with this material science problem? Problem 10.38 (GO Tutorial) For a copper-silver alloy of composition 24 wt% Ag-76 wt% Cu and at 775°C (1425°F) (see Animated Figure 10: (a) Determine the mass fractions of a and β phases Mass fraction a Mass fraction β- (b) Determine the mass fractions of primary a and eutectic microconstituents do the following: Mass fraction a primary Mass fraction eutectic (c) Determine the mass fraction of eutectic a Mass fraction a eutectic|...
Determine the heat of evaporation of carbon disulfide, CS 2() - CS 2(g) given the enthalpies of reaction below. C(s) + 2 S(s)-CS() C(s) + 2 S(s) - CS2(g) ArHº = +89.4 kJ/mol-rxn ArHº = -116.7 kJ/mol-rxn Which of the following has zero standard enthalpy of formation at 25 °C? a. Br2(g) Ob. Br(s) O c. Br(g) O d. Br2(5) Oe. Br2(1)
Determine the heat of evaporation of carbon disulfide, CS 2( ) → CS 2(g) given the enthalpies of reaction below. C(s) + 2 S(s) → CS2() ΔrH° = +89.4 kJ/mol-rxn C(s) + 2 S(s) → CS2(g) ΔrH° = +116.7 kJ/mol-rxn a. –206.1 kJ b. +27.3 kJ c. –27.3 kJ d. +206.1 kJ e. +1.31 kJ
Question 2 What is the composition, in atom percent of an alloy that consists of 4.5 wtPb and 95.5 wt% Sn? The atomic weights for Pb and Snare 207.19 g/mol and 118.71 g/mol, respectively a. 2.6 Pb and 97.4 % Sn Ob 7.6 % Pb and 92.4 ats 97.4 at Ph and 2.65 Od 92.4 at Ph and 7.6 at% Sn
State the composition Fe and C of plain carbon eutectoid steel. Determine wt% for: α ferrite, Fe3C cementite, assume equilibrium cooling process.
Determine the carburizing time necessary to achieve a carbon concentration of 0.48 wt% at a position 3.2 mm into an iron-carbon alloy that initially contains 0.20 wt% C. The surface concentration is to be maintained at 1.0 wt% C, and the treatment is to be conducted at 1070°C. Assume that D0 = 2.2 × 10-5 m2/s and Qd = 173 kJ/mol. The following table may be useful. om Equation 6.5 calculate the Gaussian error function: erf(x2Dt) =
Problem 1 (Chapter 10). For a lead-tin alloy of composition 45 wt% Sn - 55 wt% Pb at 180°C, do the following (except (e)); (a) Determine the mass fractions of the a and 3 phases. (b) Determine the mass fractions of primary (pro-eutectic) a and eutectic micro-constituents. (c) Determine the mass fraction of eutectic a. (d) For a photomicrograph of the alloy shown below, please label all micro-constituents and indicate their approximate compositions. (e) Draw the sketch of a photomicrograph...
s. (15 points) Four kilograms ) what temperature muistns of steel containing 0.50 wt% carbon is to be heat treated. b) if slowly cooled from the Austenite phase, what jsrthe proeutectoid phase that is formed? c) how many kilograms of Pearlite will be in the steel when cooled to room temperature? d) compute the mass fractions 6t Péfrnite and Cemente in Peartite e) the microstructure of a different iron-carbon alloy consists of proeutectoid ferrite and pearlite. The containing 0.5 it...
The microstructure of an iron-carbon alloy consists of proeutectoid cementite and pearlite; the mass fractions of these microconstituents are 0.12 and 0.88, respectively. Determine the concentration of carbon in this alloy. The iron-iron carbide phase diagram is shown in the Animated Figure 9.24. wt%C Composition = 0 wt% C Composition = 0 at% C Temperature = 400 °C Temperature = 752 F 2025 Composition (at% C) 10 15 160025 1600 97538 9493 °C 1400 1400 2500 | 1394 °C y+L...