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Danial is conducting an experiment to evaluate the hardenability of low alloy steel, 4340.

Danial is conducting an experiment to evaluate the hardenability of low alloy steel, 4340.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Danial is conducting an experiment to evaluate the hardenability of low alloy steel, 4340. (a) i. Discuss the proper testing procedure for the experiment with the aid of illustration. ii. Refer to Figure 2, construct the radial hardness profile for the cylindrical steel specimen that has been quenched in mild agitated oil. Given that the specimen's diameter is 50 mm. 100 10 3. 2 Cooling rate (°C/s) F10 %Martensite 4340 8. 40 4140 8640 1040 5140 20 0. 10 Distance from quenched end (mm) 20 30 40 50 Figure 2 iii. Justify, what can be happen during quenching, if the surface area-to-volume of the low alloy steel specimen is increases? Hardness, HRC
Transcribed Image Text:Danial is conducting an experiment to evaluate the hardenability of low alloy steel, 4340. (a) i. Discuss the proper testing procedure for the experiment with the aid of illustration. ii. Refer to Figure 2, construct the radial hardness profile for the cylindrical steel specimen that has been quenched in mild agitated oil. Given that the specimen's diameter is 50 mm. 100 10 3. 2 Cooling rate (°C/s) F10 %Martensite 4340 8. 40 4140 8640 1040 5140 20 0. 10 Distance from quenched end (mm) 20 30 40 50 Figure 2 iii. Justify, what can be happen during quenching, if the surface area-to-volume of the low alloy steel specimen is increases? Hardness, HRC
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