Homework Answers
Add Answer to:
Q3
3. Determine the composition, in atom percent, of an alloy that consists of 97 wt%...
A plate of iron is exposed to a carburizing (carbon-rich) atmosphere on one side and a...
A plate of iron is exposed to a carburizing (carbon-rich) atmosphere on one side and a decarburizing (carbon-deficient) atmosphere on the other side at 700℃. If a condition of steady-state is achieved, calculate the diffusion flux of carbon through the plate if the concentrations of carbon at positions of 5 and 10 mm beneath the carburizing surface are 1.2 and 0.8 ??/?^3, respectively. Assume a linear concentration profile and a diffusion coefficient of 3 × 10−11 ?^2/? at this temperature.
Question 2 What is the composition, in atom percent of an alloy that consists of 4.5...
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
please solve 2. An FCC iron-carbon alloy initially containing 0.40 wt% C is exposed to an...
please solve
2. An FCC iron-carbon alloy initially containing 0.40 wt% C is exposed to an oxygen-rich and virtually carbon-free atmosphere at 1325 K (1052°C). Under these circumstances the carbon diffuses from the alloy and reacts at the surface with the oxygen in the atmosphere-that is, the carbon concentration at the surface position is maintained essentially at 0 wt% C. (This process of carbon depletion is termed decarburization.) At what position will the carbon concentration be 0.25 wt% after a...
A materials scientist has created an alloy containing aluminum, copper, and zinc, and wants to determine the percent composition of the alloy. The scientist takes a 12.502 g sample of the alloy a...
A materials scientist has created an alloy containing aluminum, copper, and zinc, and wants to determine the percent composition of the alloy. The scientist takes a 12.502 g sample of the alloy and reacts it with concentrated HCI. The reaction converts all of the aluminum and zinc in the alloy to aluminum chloride and zinc chloride in addition to producing hydrogen gas. The copper does not react with the HCI. Upon completion of the reaction, a total of 9.78 L...
The microstructure of an iron-carbon alloy consists of proeutectoid cementite and pearlite; the mass fractions of...
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...
1. Determine the composition, in at and 24 wt% carbon. Ti 47.88 g/mol, Cs]2 g/mol. omic...
1. Determine the composition, in at and 24 wt% carbon. Ti 47.88 g/mol, Cs]2 g/mol. omic percent, of an alloy that consists of 76 wt% titanium
2. An FCC iron-carbon alloy initially containing 0.40 wt% C is exposed to an oxygen-rich and...
2. An FCC iron-carbon alloy initially containing 0.40 wt% C is exposed to an oxygen-rich and virtually carbon-free atmosphere at 1325 K (1052°C). Under these circumstances the carbon diffuses from the alloy and reacts at the surface with the oxygen in the atmosphere—that is, the carbon concentration at the surface position is maintained essentially at 0 wt% C. (This process of carbon depletion is termed decarburization.) At what position will the carbon concentration be 0.25 wt% after a 10-h treatment?...
Problem 5.10 A sheet of BCC iron 4.9-mm thick was exposed to a carburizing atmosphere on...
Problem 5.10
A sheet of BCC iron 4.9-mm thick was exposed to a carburizing
atmosphere on one side and a decarburizing atmosphere on the other
side at 725°C. After having reached steady state, the iron was
quickly cooled to room temperature. The carbon concentrations at
the two surfaces were determined to be 0.011 and 0.0074 wt%.
Calculate the diffusion coefficient if the diffusion flux is 2.6 ×
10-8 kg/m2-s, given that the densities of
carbon and iron are 2.25 and...
UTVER VIS Concentration of Nitrogen (wt%): = 0.21 Position in mm= 7.2 Diffusion Coefficient for Nitrogen...
UTVER VIS Concentration of Nitrogen (wt%): = 0.21 Position in mm= 7.2 Diffusion Coefficient for Nitrogen in Iron at 700°C -8.90E-10 Nitrogen in Iron Heat Treatment Time (hours): = 8 Carburizing Time (hrs): = 7 Steel Alloy Case Depth (mm): 4.8 Steel Alloy New Case Depth (mm) - 9.9 Activation Energy kJ/mol: = 103 Temperature for Problem 3 (Celsius) -809 . Data for Problem 4 Temperature in C: -595 Diffusivity (m2/s) = 5.62E-14 Temperature in C: -702 Diffusivity (m /s)...
Please show work for problems 1-4 1. Calculate the activation energy for vacancy formation in aluminum,...
Please show work for problems 1-4
1. Calculate the activation energy for vacancy formation in aluminum, given that the equilibrium number of vacancies at 500°C (773 K) is 7.57 x10m3. The atomic weight and density (at 500°c) for aluminum are 26.98 g/mol and 2.62 g/cm, respectively 2. What point defects are possible for Al,0, as an impurity in Mgo? How many Al ions must be added to form each of these defects? 3. A sheet of steel 4.5 mm thick...
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
please solve
2. An FCC iron-carbon alloy initially containing 0.40 wt% C is exposed to an oxygen-rich and virtually carbon-free atmosphere at 1325 K (1052°C). Under these circumstances the carbon diffuses from the alloy and reacts at the surface with the oxygen in the atmosphere-that is, the carbon concentration at the surface position is maintained essentially at 0 wt% C. (This process of carbon depletion is termed decarburization.) At what position will the carbon concentration be 0.25 wt% after a...
A materials scientist has created an alloy containing aluminum, copper, and zinc, and wants to determine the percent composition of the alloy. The scientist takes a 12.502 g sample of the alloy and reacts it with concentrated HCI. The reaction converts all of the aluminum and zinc in the alloy to aluminum chloride and zinc chloride in addition to producing hydrogen gas. The copper does not react with the HCI. Upon completion of the reaction, a total of 9.78 L...
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...
1. Determine the composition, in at and 24 wt% carbon. Ti 47.88 g/mol, Cs]2 g/mol. omic percent, of an alloy that consists of 76 wt% titanium
2. An FCC iron-carbon alloy initially containing 0.40 wt% C is exposed to an oxygen-rich and virtually carbon-free atmosphere at 1325 K (1052°C). Under these circumstances the carbon diffuses from the alloy and reacts at the surface with the oxygen in the atmosphere—that is, the carbon concentration at the surface position is maintained essentially at 0 wt% C. (This process of carbon depletion is termed decarburization.) At what position will the carbon concentration be 0.25 wt% after a 10-h treatment?...
Problem 5.10
A sheet of BCC iron 4.9-mm thick was exposed to a carburizing
atmosphere on one side and a decarburizing atmosphere on the other
side at 725°C. After having reached steady state, the iron was
quickly cooled to room temperature. The carbon concentrations at
the two surfaces were determined to be 0.011 and 0.0074 wt%.
Calculate the diffusion coefficient if the diffusion flux is 2.6 ×
10-8 kg/m2-s, given that the densities of
carbon and iron are 2.25 and...
UTVER VIS Concentration of Nitrogen (wt%): = 0.21 Position in mm= 7.2 Diffusion Coefficient for Nitrogen in Iron at 700°C -8.90E-10 Nitrogen in Iron Heat Treatment Time (hours): = 8 Carburizing Time (hrs): = 7 Steel Alloy Case Depth (mm): 4.8 Steel Alloy New Case Depth (mm) - 9.9 Activation Energy kJ/mol: = 103 Temperature for Problem 3 (Celsius) -809 . Data for Problem 4 Temperature in C: -595 Diffusivity (m2/s) = 5.62E-14 Temperature in C: -702 Diffusivity (m /s)...
Please show work for problems 1-4
1. Calculate the activation energy for vacancy formation in aluminum, given that the equilibrium number of vacancies at 500°C (773 K) is 7.57 x10m3. The atomic weight and density (at 500°c) for aluminum are 26.98 g/mol and 2.62 g/cm, respectively 2. What point defects are possible for Al,0, as an impurity in Mgo? How many Al ions must be added to form each of these defects? 3. A sheet of steel 4.5 mm thick...
Most questions answered within 3 hours.
-
A nozzle with a radius of 0.250 cm is attached to a garden hose
with a...
asked 35 seconds ago -
Please help me with me. I did the first part to write the operations but in...
asked 6 minutes ago -
PLEASE do not use any loops for the program; only recursion is
allowed
4. Write a...
asked 9 minutes ago -
Use Cryptool to find the Cryptographic SHA-1 hash value of the
string "abc". The calculator is...
asked 10 minutes ago -
You are attempting to calculate a firm’s free cash flow to
equity. You know the following...
asked 1 hour ago -
the following reaction occurs in a balloon containing
N2O2 gas
N2O4(g)=2NO2(g)
will the volume of the...
asked 1 hour ago -
answer the questions throughout this program
public class Day implements Comparable {
Private Boolean atWork;...
asked 1 hour ago -
This is C++ code for parking fee management program
#include <iostream>
#include <iomanip>
using namespace std;...
asked 1 hour ago -
The free energy change for the following reaction at 25 °C, when
[Sn2+] = 1.17 M...
asked 3 hours ago -
An MNE is this kind of industry when competition in one country
is essentially independent of...
asked 5 hours ago -
. For this set of questions, determine what
proportion of a normal distribution is located betweeneach...
asked 5 hours ago -
A college student is employed as a door-to-door newspaper
salesman. Historical data suggests that the student...
asked 6 hours ago