1.50% Pearlite, 50% Tempered Martensite 2.50% Bainite, 45% Martensite, 5% Austenite Part 2: Use the TTT-Diagram to "map out" heat treatment steps for the following desiredmicrostructures (You can physically draw the treatment as lines on the diagram, and'or list thesteps)800Austenite (stable)T.ET(°C)A600400A100%50%0%M+A50%200M+A90%M +Atime (s)510101010-- --0%

To find: Steps to attain the following phase

Answered: 1.50% Pearlite, 50% Tempered Martensite…

Engineering

Mechanical Engineering

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

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter26: Welding Metallurgy

Section: Chapter Questions

Problem 26R

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Question

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

Part 2: Use the TTT-Diagram to "map out" heat treatment steps for the following desired
microstructures (You can physically draw the treatment as lines on the diagram, and'or list the
steps)
800
Austenite (stable)
T.
E
T(°C)
A
600
400
A
100%
50%
0%
M+A
50%
200
M+A
90%
M +A
time (s)
5
10
10
10
10
-- --
0%

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