Homework Answers
Add Answer to:
(10 Question 3: points: 5 pts each) a) What are ferrite and cementite in the Iron...
In the diagram below, what is the eutectic temperature and what is the eutectoid temperature of...
In the diagram below, what is the eutectic temperature and what
is the eutectoid temperature of steel?
A.
eutectic
temperature: 1539°C,
eutectoid
temperature:
723°C.
B.
eutectic
temperature: 723°C,
eutectoid
temperature:
1539°C.
C.
eutectic
temperature: 723°C,
eutectoid
temperature:
1130°C.
D.
eutectic
temperature: 1130°C,
eutectoid
temperature:
723°C.
In the diagram below, what is the eutectic composition and what
is the eutectoid composition of steel?
A.
eutectic
composition:
4.3
wt% C, eutectoid
composition:
0.83 wt% C.
B.
eutectic
composition:
0.83
wt% C, eutectoid...
Question 3 (1) Sketch the microstructures (at temperature just below eutectold temperature) of slow-cooled pure Iron...
Question 3 (1) Sketch the microstructures (at temperature just below eutectold temperature) of slow-cooled pure Iron (Owt%C) and steels with 0.3wt%C, and 0.76wt%C, and explain how the structures develop on cooling from 1100°C to room temperature (Figure 3.1 for Fe-Fe,c phase diagram, see below). (18marks] 1600 Composition Cat C) 10 is 20 25 1538"C 149346 1400 1394°C 2500 72 1200 1147°C > Austenite 2.14 4.30 Temperature) 2000 1000 Temperature (°F) 912°C y + Fe3c 800 1500 0.76 727°C 600 0.022...
Question 28 Worth 4 points If a component fabricated from an S-590 alloy (Figure below) is...
Question 28 Worth 4 points If a component fabricated from an S-590 alloy (Figure below) is to be exposed to a tensile stress of 300 MPa (43,500 psi) at 815°C (1499°F), estimate its rupture lifetime. 1000 800 600 650С 400 730 C 200 925°C 815 C 100 80 60F 40 104 10 3 102 101 İ İO 102 103 104 105 Rupture lifetime (h) Question 30 Worth 4 points Compute the mass fraction of eutectoid ferrite in an iron-carbon alloy...
(12 Question 4: points: 4 pts each) Consider 3.0 kg of austenite containing 1.6 wt% C...
(12 Question 4: points: 4 pts each) Consider 3.0 kg of austenite containing 1.6 wt% C at 1100 °C, cooled to below 726 °C. (a) What is the proeutectoid phase? (b) How many kilograms of total ferrite and cementite form? (c) How many kilograms each of pearlite and the proeutectoid cementite form? Composition (at% C) 10 15 5 20 25 0 1600 1538°C 1493°C L 1400 S 1394°C 7+L 1200 1147°C 2.14 4.30 y, Austenite Temperature (°C) 1000 912°C y...
please answer question 2,3,4 A critical feature of steel is that a considerable amount of...
please answer question 2,3,4
A critical feature of steel is that a considerable amount of carbon can be dissolved in the austenite, phase, (up to 2.14 w/o at 1147"C), whereas carbon is essentially insoluble in ferrite, Cooling from point d to e, just above the eutectoid but still in the an increased fraction of the +y region, will produce phase and a microstructure similar to that shown: the particles precinitates out in the form af an intermetallic.compound called iron-carbide...
The phase diagram for the iron-carbon Fe-C system is shown below. use it to answer the...
The phase diagram for the iron-carbon Fe-C system is shown
below. use it to answer the following questions
a) How many different solid allotropes (phases) does pure iron
have?
b) what is the maximum carbon solubility of carbon in
austentite?
c) what is the maximum carbon solubility of carbon in
ferrite?
d)On cooling the following phase reaction occurs at 0.76% C and
727*c y--> alpha + Fe3C. On cooling what phase reaction occurs
at .16% C and 1493*c?
e)For a...
2. (a) What is a phase? Name two examples. (b) Label all the phase regions on...
2. (a) What is a phase? Name two examples. (b) Label all the phase regions on Figure 2 and write the eutectic and eutectoid reactions. Show also the steel and the cast iron intervals on Figure 2. (C) Select proper compositions, i.e. % C, that can be suitable for: (i) Car (highway) fender. (ii) Diesel engine block. (iii) Railway Composition (at% C) 0 1600 1538°C - 1493°C 10 15 20 25 1400 & 2500 1394°C 1200 1147C 2.14 4.30 2000...
What is the proeutectoid phase for an iron-carbon alloy in which the mass fractions of total...
What is the proeutectoid phase for an iron-carbon alloy in which the mass fractions of total ferrite and total cementite are 0.96 and 0.04, respectively? See Animated Figure 9.24 Part 1 What are the concentrations of carbon in a-ferrite and FeyCat a temperature just below 727°C? You may want to use Animated Figure 9.24 (a) C = i (b) Cre,c = i Save for Later Attempts:0 of 1 used Submit Answer Part 2 Compute the composition of an iron-carbon alloy...
15. From the iron-carbon phase diagram (see Figure below) a. What are the concentrations of carbon...
15. From the iron-carbon phase diagram (see Figure below) a. What are the concentrations of carbon in each a-ferrite and Fe3C at a temperature just below 727°C? b. What are the phases involved in the eutectoid reaction? c. I am making a hyper-eutectoid steel with 2 wt%C. If I cool slowly from 1400°C, what phases and microstructure will I have at room temperature, assuming only equilibrium phases can be present? d. What is the euctectoid composition for Fe-C system shown...
material Question 3: For an Iron-Iron Carbide (Fe-FesC) phase diagram, answer the following for 5.0 wt%...
material
Question 3: For an Iron-Iron Carbide (Fe-FesC) phase diagram, answer the following for 5.0 wt% C 10 Points How many phases are possible at this composition and what will be the melting temperature at this a) composition? b) the alloy is hypocutectic or hypereutectoid at 800°C at this composition ? c) the alloy is hypocutectic or hypereutectoid at 600°C at this composition? d) composition and amount of each phase at 1250°C at this composition e) composition and amount of...
In the diagram below, what is the eutectic temperature and what
is the eutectoid temperature of steel?
A.
eutectic
temperature: 1539°C,
eutectoid
temperature:
723°C.
B.
eutectic
temperature: 723°C,
eutectoid
temperature:
1539°C.
C.
eutectic
temperature: 723°C,
eutectoid
temperature:
1130°C.
D.
eutectic
temperature: 1130°C,
eutectoid
temperature:
723°C.
In the diagram below, what is the eutectic composition and what
is the eutectoid composition of steel?
A.
eutectic
composition:
4.3
wt% C, eutectoid
composition:
0.83 wt% C.
B.
eutectic
composition:
0.83
wt% C, eutectoid...
Question 3 (1) Sketch the microstructures (at temperature just below eutectold temperature) of slow-cooled pure Iron (Owt%C) and steels with 0.3wt%C, and 0.76wt%C, and explain how the structures develop on cooling from 1100°C to room temperature (Figure 3.1 for Fe-Fe,c phase diagram, see below). (18marks] 1600 Composition Cat C) 10 is 20 25 1538"C 149346 1400 1394°C 2500 72 1200 1147°C > Austenite 2.14 4.30 Temperature) 2000 1000 Temperature (°F) 912°C y + Fe3c 800 1500 0.76 727°C 600 0.022...
Question 28 Worth 4 points If a component fabricated from an S-590 alloy (Figure below) is to be exposed to a tensile stress of 300 MPa (43,500 psi) at 815°C (1499°F), estimate its rupture lifetime. 1000 800 600 650С 400 730 C 200 925°C 815 C 100 80 60F 40 104 10 3 102 101 İ İO 102 103 104 105 Rupture lifetime (h) Question 30 Worth 4 points Compute the mass fraction of eutectoid ferrite in an iron-carbon alloy...
(12 Question 4: points: 4 pts each) Consider 3.0 kg of austenite containing 1.6 wt% C at 1100 °C, cooled to below 726 °C. (a) What is the proeutectoid phase? (b) How many kilograms of total ferrite and cementite form? (c) How many kilograms each of pearlite and the proeutectoid cementite form? Composition (at% C) 10 15 5 20 25 0 1600 1538°C 1493°C L 1400 S 1394°C 7+L 1200 1147°C 2.14 4.30 y, Austenite Temperature (°C) 1000 912°C y...
please answer question 2,3,4
A critical feature of steel is that a considerable amount of carbon can be dissolved in the austenite, phase, (up to 2.14 w/o at 1147"C), whereas carbon is essentially insoluble in ferrite, Cooling from point d to e, just above the eutectoid but still in the an increased fraction of the +y region, will produce phase and a microstructure similar to that shown: the particles precinitates out in the form af an intermetallic.compound called iron-carbide...
The phase diagram for the iron-carbon Fe-C system is shown
below. use it to answer the following questions
a) How many different solid allotropes (phases) does pure iron
have?
b) what is the maximum carbon solubility of carbon in
austentite?
c) what is the maximum carbon solubility of carbon in
ferrite?
d)On cooling the following phase reaction occurs at 0.76% C and
727*c y--> alpha + Fe3C. On cooling what phase reaction occurs
at .16% C and 1493*c?
e)For a...
2. (a) What is a phase? Name two examples. (b) Label all the phase regions on Figure 2 and write the eutectic and eutectoid reactions. Show also the steel and the cast iron intervals on Figure 2. (C) Select proper compositions, i.e. % C, that can be suitable for: (i) Car (highway) fender. (ii) Diesel engine block. (iii) Railway Composition (at% C) 0 1600 1538°C - 1493°C 10 15 20 25 1400 & 2500 1394°C 1200 1147C 2.14 4.30 2000...
What is the proeutectoid phase for an iron-carbon alloy in which the mass fractions of total ferrite and total cementite are 0.96 and 0.04, respectively? See Animated Figure 9.24 Part 1 What are the concentrations of carbon in a-ferrite and FeyCat a temperature just below 727°C? You may want to use Animated Figure 9.24 (a) C = i (b) Cre,c = i Save for Later Attempts:0 of 1 used Submit Answer Part 2 Compute the composition of an iron-carbon alloy...
15. From the iron-carbon phase diagram (see Figure below) a. What are the concentrations of carbon in each a-ferrite and Fe3C at a temperature just below 727°C? b. What are the phases involved in the eutectoid reaction? c. I am making a hyper-eutectoid steel with 2 wt%C. If I cool slowly from 1400°C, what phases and microstructure will I have at room temperature, assuming only equilibrium phases can be present? d. What is the euctectoid composition for Fe-C system shown...
material
Question 3: For an Iron-Iron Carbide (Fe-FesC) phase diagram, answer the following for 5.0 wt% C 10 Points How many phases are possible at this composition and what will be the melting temperature at this a) composition? b) the alloy is hypocutectic or hypereutectoid at 800°C at this composition ? c) the alloy is hypocutectic or hypereutectoid at 600°C at this composition? d) composition and amount of each phase at 1250°C at this composition e) composition and amount of...
Most questions answered within 3 hours.
-
Composite score on the ACT and the SAT are normally distributed.
Mary scored 26 on the...
asked 17 seconds from now -
continuous board that's located along the top edge of the roof
where the rafters connect is...
asked 8 seconds from now -
2) A board with a mass of 9 kg, which is 4 meters long, rests on...
asked 8 seconds ago -
In a reaction 1 test tube has CaCl2 mixed with H2C2O4, HCl and
NH3. After adding...
asked 31 seconds ago -
The nanograms per microliter of a drug still presents n a
patient's bloodstream 1 hour after...
asked 27 minutes ago -
For the first ten questions, you'll use the following data. It
will be repeated for your...
asked 21 minutes ago -
The days required for
a business to receive inventory, sell the inventory, and collect
cash from...
asked 26 minutes ago -
1. A DEAE column chromatography of IgG enriched was used. What
if you prepared a column...
asked 34 minutes ago -
Description: Merge two or more text files
provided by the user into a new text file...
asked 55 minutes ago -
1) A 2.00 kg ball of is placed on a spring with spring constant
? =...
asked 55 minutes ago -
Calculate the force required to produce 15 N⋅m torque at an
angle of 30∘ from a...
asked 1 hour ago -
1) Solid lead acetate is slowly added to 50.0 mL of a 0.0486 M
potassium hydroxide...
asked 57 minutes ago