If the carbon concentration of a plain carbon steel is 1.0%, and it is cooled fairly slowly (i.e. not quenched) from a liquid melt to room temperature, will the room temperature microstructure be 100% pearlite? If not, what phase will the “non- pearlite” grains consist of? Composition (at% C)1015202516001538°C1493°CL140025001394°Cy+L12001147°C2.144.30y, Austenite20001000912°Cy + Fe3C8001500727°C0.760.022600a, Ferritea + Fe3CCementite (Fe3C)10004000.2346.70(Fe)Composition (wt% C)Temperature (°C)Temperature (°F)

If steel is cooled at 0.76% them resulting structure will form pearlite.

If the carbon concentration of a plain carbon steel is 1.0%, and it is cooled fairly slowly (i.e. not quenched) from a liquid melt to room temperature, will the room temperature microstructure be 100% pearlite? If not, what phase will the “non- pearlite” grains consist of?

If the carbon concentration of a plain carbon steel is 1.0%, and it is cooled fairly slowly (i.e. not quenched) from a liquid melt to room temperature, will the room temperature microstructure be 100% pearlite? If not, what phase will the “non- pearlite” grains consist of?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: Using the TTT diagram, what microstructure would be developed by rapidly cooling to 650°C and…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Explain why martensite is hard? What is the crystal structure of martensite? Show the positions of…

A: Martensite has a BCC(Body Centred Cubic) crystal structure. It has distorted BCC ferrite lattice…

Q: What is/are the differences between Macro and Micro grains? What is the importance of micro- grain…

A: Macro grain : The grain size or shape is visible to an naked eye Micro grain : The grain size is…

Q: in a tabular format compare microstructure,for different cast irons and steel

A: Types Nature Form Comments Ferrite Soft and ductile In the form of flakes Cementite(Fe3C)…

Q: 5. i Describe in your own words the three strengthening mechanisms discussed in this chapter (i.e.,…

A: Grain Size Reduction; Deformation/Dislocation occurs as the slip increases, if we can control the…

Q: How did you determine the eutectic point? Explain.

A: In phase diagram , eutectic point is the point where liquid exist at the lower temperature.this…

Q: 1900 Fo = Forsterite 1800 Liquid En = Enstatite Qz = Quartz 1700 Fo+liq 1600 -En+lig Qz+liq 1500…

A: From the olivine mineral group, forsterite is a magnesium silicate crystal with the chemical formula…

Q: 10Which of the following represent mechanism for the nucleation of new grains? I. Dendrite…

A: Grain nucleation and grain growth are the phenomenon that occurs in the polycrystalline materials…

Q: Explain how does the reduction of the grain size increase the strength of the single-phase metals?

A: Single phase metals are plastically deformed due to motion of dislocations in the grains. This…

Q: Using the isothermal transformation diagram for a 0.45 wt% C steel alloy (Animated Figure 10.40),…

A: After cooling to and while holding at 700°C the specimen first transforms into pro-eutectoid ferrite…

Q: Is it true that Martensite is tempered because it is too strong? Why or Why not

A: Initially, martensite is harder and brittle phase when steel is sudden cool down. When the hardness…

Q: Single-crystal technology is applied to nickel alloys that are used as gas turbine blades in…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: What are they and what is their application in the production of the following steels: TTT diagrams…

A: TTT Diagram of non-eutectoid steel: It is known as the Time-Temperature Transformation curve,…

Q: What is the% C ratio of two different steels with 80% equal and equal austenite content at 724 C?

A: Given: two different steels with 80% equal and equal austenite content at 724 C

Q: A hypo-eutectoid steel sample has a mass of 538kg and a nominal carbon content of 0.57%. Sketch the…

A: From the given data,

Q: At what temperature does the first solid phase form and what is the solid’s composition? (2) At what…

A: 1. the solidification phase will start at a temperature of about 1310 0C. the composition of…

Q: During the recrystallization of a cold-worked material, which of the following statement(s) is (are)…

Q: What is the role of austenitic gram size in martensitic transformations? Is austenitic grain size is…

A: Austenitic gram size The austenite grain is around 1–2 μm after the intercritical receding stage,…

Q: Is it possible to have an iron-carbon alloy for which the mass fractions of total cementite and…

A: Lever rule in phase diagrams are used to determine the mole fraction of each phase in the materials.…

Q: 11.) For these metal specimens, which of the following statements is wrong a) The strength and…

A: Answer: Statement b is false

Q: 1.50% Pearlite, 50% Tempered Martensite 2.50% Bainite, 45% Martensite, 5% Austenite

A: To find: Steps to attain the following phase

Q: Q.1. For hypoeutoctoid plain carbon steel (select %C content yourself), determine the phases that…

A: hypoeutectoid plain carbon steel, carbon % present in this steel is from 0.02 to 0.8%. phases…

Q: What is the% C ratio of two different steels with 80% and equal austenite content at 724 C? please…

A: With the help of iron-carbon diagram,at 724oC & 80% austenite, carbon percentage will be: 0.9%…

Q: While there is about 2 times difference between tensile and compression strength in DD with spheroid…

A: (1) The strength of any material depends on the internal structure the materials. The difference…

Q: Calculate the number of vacancies per cm3 expected in copper at 1080°C (just below the melting…

Q: Basêd on the Iron-carbon phase diagram describe; 1) the process in which the white cast iron is…

A: 1. The process in which the white cast iron is converted into malleable cast iron is called…

Q: Calculate the critical radius of precipitates for which an Al--Mg alloy containing 10% Mg will be…

A: Solution:

Q: martensite is formed and highlight its effect on mechanical properties.

A: 1).martensite is hardest phase of the carbon steel. It is formed when we quenching the the γ-phase…

Q: is it possible to predict the metallic phases that may arise during the casting and solidification…

A: Solution: To Find: Is it possible to predict the metallic phases that may arise during the casting…

Q: (a) What effects does it have on the microstructure? (b) How does this affect dislocation movement?…

A: Given: Quenching To determine: Define quenching. (a) What effects does it have on the…

Q: wWucsuons © 1. Differentiate between the following transformations Pearlite, (b) Bainitic (c)…

A: Steel is quenched, usually with water or oil, to produce pearlite. The main distinction between it…

Q: Describe the process conditions necessary to create a)a cored microstructure

Q: What process will result in Ferrite plus Pearlite microstructure? List the reasons why this…

A: The microstructure of ferrite and pearlite will results in hypoeutectoid steel. This is having the…

Q: (1) Considering that the steel contains 0.1 - 0.8 wt% carbon by weight, how can you account for the…

A: Given: To find: How to account for high amount of pearlite

Q: 1.9 kg of austenite containing 1.50 Wt% C is cooled from 1200 degrees C to a temperature just below…

A: Given: The mass of the austenite, m = 1.9 kg The wt% of C in austenite = 1.5% The temperature of…

Q: What are the advantages of Ni-superalloys over austenitic steels in high temperature applications?…

A: There are various advantages of Ni-superalloys over the austenite steels in high temperature…

Q: Increasing the degree of graphite nodularity produces an improvement in .cast iron elongation, due…

Q: Explain two important differences between martensitic and pearlitic transformations.

A: Martensitic and pearlitic are two types of steel formed by different processes. Steel has mechanical…

Q: What is the critical value of G to avoid constitutional supercooling for the directional…

A: Solution: Given Data: v = 0.05 mm/s k = 0.14 m = -2.6oC/wt% D = 3X10-5 cm2/s C = 3 wt%

Q: Metal Working: What process will result in a Martensite microstructure? List the reasons why this…

A: Martensite structure in the steel is a very important structure and can be formed by continuous…

Q: Plot the percentage of phases present as a function of percentage Carbon from 0% to 2% for a plain…

A: Consider the Iron-Iron carbide diagram shown below. At room temperatures, Alpha Ferrite and…

Q: 1) Draw the iron-Fe;C phase diagram. Consider 0.25 and 1.1 wt% C steel alloy. It is cooled slowly…

Q: Q.1. For hypoeutoctoid plain carbon steel (select %C content yourself), determine the phases that…

A: Please find my answer attached below.Please understand that according to honor code, I could answer…

Question

If the carbon concentration of a plain carbon steel is 1.0%, and it is cooled fairly slowly (i.e. not quenched) from a liquid melt to room temperature, will the room temperature microstructure be 100% pearlite? If not, what phase will the “non- pearlite” grains consist of?

Composition (at% C)
10
15
20
25
1600
1538°C
1493°C
L
1400
2500
1394°C
y+L
1200
1147°C
2.14
4.30
y, Austenite
2000
1000
912°C
y + Fe3C
800
1500
727°C
0.76
0.022
600
a, Ferrite
a + Fe3C
Cementite (Fe3C)
1000
400
0.
2
3
4
6.70
(Fe)
Composition (wt% C)
Temperature (°C)
Temperature (°F)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Similar questions

(11.10) Suppose that a steel of eutectoid composi- tion is cooled to 550°C (1020°F) from 760°C(1400°F) in less than 0.5 s and held at this temperature. (a) How long will it take for the austenite- to pearlite reaction to go to 50% comple- ton? To 100% completion? (b) Estimate the hardness of the alloy that has completely transformed to pearlite? 11.12) Briefly cite the differences between pearl- rp. bainite, and spheroidite relative to crostructure and mechanical properties?
1. What temperature does a Fe-C metal with less than 4 weight percent C melt at? 2. What temperature does a Fe-C metal with less than two weight percent C melt at? 3. What climate causes delta-Fe to change into gamma-Fe? 4. What percentage of proeutectoid Fe 3C is present in a steel with 1.15 wt% carbon at 727.1 o C?
10.15) A magnesium-lead alloy of mass 5.5 ka consists of a solid a phase that has a compo- sition that is just slightly below the solubility limit at 200°C (390°F). (a) What mass of lead is in the alloy? (b) If the alloy is heated to 350°C (660°F). how much more lead may be dissolved in the a phase without exceeding the solubility limit of this phase?
For a 70-30 Zn-Cu alloy, what would the percent of each phase be at 800°C and 500°C?
List the phase(s) that are present, the phase composition(s) and the weight fractions of the phase(s) for each of the following alloys:(a) 70 wt% Zn-30 wt% Cu at 300 C (b) 90 wt% Pb-10 wt% Sn at 325 C (c) 2.5 kg Cu and 5.0 kg Ag at 900 C (d) 37 lbm Pb and 6.5 lbm Mg at 500 C
A hypo-eutectoid steel with composition of 0.5% carbon is heated to 1000°. Using the a iron-carbon phase diagram (also found in the course book, or here https://commons.wikimedia.org/wiki/File:Iron_carbon_phase_diagram.svg (Links to an external site.) (Links to an external site.)) answer the following questions. (a) What phase or phases will be present at 950°C? (b) If temperature is lowered from 950°C, at which temperature (estimate) α phase (Ferrite) will appear? (c) Use the lever rule to estimate how much (wt%) ferrite and how much austenite will exist just above 727 °C? (d) What happens to the austenite if the temperature is lowered below 727 °C? (e) Schematically sketch and label the resulting microstructure.
For a 50-50 Mg-Pb alloy, what would the percent of each phase be at 500°C, 300°C and 100°C?
Indicate whether True/False. a) Interstitial solutes are effective in hardening FCC alloys but less effective than in BCC alloys.
The microstructure of a steel consists of 100% coarse perlite. According to this information, it is reported that the steel contains 1.65% C. Is this result correct? Explain by showing on the Fe-Fe3C equilibrium diagram.
What is the chemical composition upper limit of carbon for steel?A) 5%B) 0.022%C) 2.11%D) 4.3%E) 0.8% 2- Is it in liquid or semi-liquid state consisting of data and solidifies in a vacuum?A) tattooB) machiningC) pre-cookingD) castingE) turning 4- Which element has the lowest density and lowest atomic weight?A) magnesiumB) hydrogenC) heliumD) aluminumE) argon
Draw the iron-Fe3C phase diagram. Consider 0.4 and 1.1 wt% C steel alloy. It is cooled slowly from a temperature within austenite phase to room temperature. Show a) microstructure at 1000 °C b) microstructure at 730°C c) microstructure at 715°C and d) microstructure at room temperature e) determine the phase present, the phase compositions at 715 and 730 °C f) What do you say about mechanical properties of these alloys, depending on their microstructure at room temperature?
A 0.25% C hypoeutectoid plain-carbon steel is slowly cooled from 950°C to a temperature just slightly below 723°C.(a) Calculate the weight percent proeutectoid ferrite in the steel.(b) Calculate the weight percent eutectoid ferrite and weight percent eutectoid cementite in the steel.