Based on the IT diagram for an iron-carbon alloy of eutectoid composition, specify the final microstructure (in terms of microconstituents present and percentages of each) of a specimen subjected to the following time-temperature treatments Cool rapidly to 650oC, hold for 104s then quench Reheat the specimen in (a) to 700oC for 20h  Cool rapidly to 400oC hold for 2s then quench to room temp Cool rapidly to 400oC hold for 20s then quench to room temp Cool rapidly to 575oC hold for 20s, cool rapidly to 350oC hold for 100s then quench to room temp.

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
icon
Related questions
Question

Based on the IT diagram for an iron-carbon alloy of eutectoid composition, specify the final microstructure (in terms of microconstituents present and percentages of each) of a specimen subjected to the following time-temperature treatments

  1. Cool rapidly to 650oC, hold for 104s then quench
  2. Reheat the specimen in (a) to 700oC for 20h
  3.  Cool rapidly to 400oC hold for 2s then quench to room temp
  4. Cool rapidly to 400oC hold for 20s then quench to room temp
  5. Cool rapidly to 575oC hold for 20s, cool rapidly to 350oC hold for 100s then quench to room temp.

 

Temperature (°C)
800
700
600
500
400
300
200
100
0
10-1
A
A
M (start)
M (50%)
M (90%)
1
10
Eutectoid temperature
M + A
10²
Time (s)
B
50%
103
10⁰
1400
1200
1000
800
600
400
200
105
Temperature (°F)
Transcribed Image Text:Temperature (°C) 800 700 600 500 400 300 200 100 0 10-1 A A M (start) M (50%) M (90%) 1 10 Eutectoid temperature M + A 10² Time (s) B 50% 103 10⁰ 1400 1200 1000 800 600 400 200 105 Temperature (°F)
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Work and Heat
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY