Determine the amount of gamma and alpha phases in a 10-kg, 1060 steel casting as it is being cooled to the following temperatures: (a) 900°c; (b) 728°c; and (c) 726°c.

Given that

Mass ,m=10 kg

a)

At 900°C

From iron carbon diagram

Percentage of alpha phase = 0 %

Percentage of gamma phase =100 %

b)

At 728°C

From iron carbon diagram

Percentage of alpha phase = 23 %

Percentage of gamma phase =77 %

c)

At 726°C

From iron carbon diagram

Percentage of alpha phase = 91 %

Percentage of gamma phase =9 %

answer:

31

explanation:

answer:

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explanation: