Question
Asked Sep 7, 2019
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Which steel presents the maximum modulus of toughness UT?

UT = ( (Sy − Sut) /2 ) ε f

 

AISI 4142 and AISI 1020
AISI 1020
AISI 1095 and AISI 1020
AISI 4142 and AISI 1095
400
2500
AISI 4142, as quenched
300
2000
1500
200
1000
AISI 1095, hot rolled
100
500
AISI 1020, hot rolled
0
0.4
0.3
0.2
0.1
E, Strain
a, Stress, MPa
o, ksi
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400 2500 AISI 4142, as quenched 300 2000 1500 200 1000 AISI 1095, hot rolled 100 500 AISI 1020, hot rolled 0 0.4 0.3 0.2 0.1 E, Strain a, Stress, MPa o, ksi

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Expert Answer

Step 1

The expression to find the modulus of toughness is:

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2

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Step 2

Obtain the required properties of the given steel.

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oy(MPa)o(MPa)E^(%) Type of steel AISI 4142 966 20 1412 AISI 1095 455 827 10 AISI 1020 205 380 25

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Step 3

From the properties, find the modulus of toughness of...

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Type of steel U;(MPa AISI 4142 237.8 AISI 1095 64.1 AISI 1020 73.125

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