Architectural Drafting and Design (MindTap Course List)
7th Edition
ISBN: 9781285165738
Author: Alan Jefferis, David A. Madsen, David P. Madsen
Publisher: Cengage Learning
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Chapter 20, Problem 20.9Q
Directions: Answer the following questions with short, complete statements or drawings as needed, or complete the electronic chapter test on the Student Companion Website.
1. Type your name, Chapter 20 Test, and the date at the top of the document.
2. Type the question number and provide the answer. You do not need to write the question unless otherwise specified by your instructor.
Give the name of a steel pipe, protected with a coat of varnish, that is used for natural gas.
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Hello and respectCan you tell me the source of these questions from which book or pamphlet thank you
A steel, possessing an eutectoid composition, undergoes a gradual cooling process from 800°C to
600°C. Outline the transformation, equilibrium microstructure, and provide approximate component
proportions.
Describe the resultant non-equilibrium microstructure in two scenarios:
a) the steel is rapidly cooled from 800°C to 600°C within 1 s, and then held at such temperature;
b) the steel is rapidly cooled from 800°C to 600°C within 1 s, maintained at this temperature for
5 s, and subsequently quenched to room temperature.
Use the provided diagrams.
Temperature (°C)
1600
1538°C
1493°C
1400
L
1394°C
Y+L
1200-
1147°C
2.14
Y. Austenite
4.30
1000
912°C
Y+ FeC
800
a
600
400
0
(Fe)
0.76
0.022
a, Ferrite
2
a + Fe3C
3
Composition (wt% C)
727°C
Cementite (Fe3C)
4
5
6
6.7
Please show the complete solution. The answers in this problem must be:
1. 16.25 kN
2. 51.725 kN
3. 45 000 mm²
4. 52.086 kN
5. 165.776 MPa
6. 62. 572 kN
7. 199. 173 MPa
8. 68.579 kN
Chapter 20 Solutions
Architectural Drafting and Design (MindTap Course List)
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