EBK MANUFACTURING PROCESSES FOR ENGINEE
EBK MANUFACTURING PROCESSES FOR ENGINEE
6th Edition
ISBN: 9780134425115
Author: Schmid
Publisher: YUZU
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Chapter 5, Problem 5.62P

(a)

To determine

The amount of alpha and gamma phases at temperature 750°C .

(a)

Expert Solution
Check Mark

Answer to Problem 5.62P

The amount of alpha and gamma phases at temperature 750°C are 0% and 100% respectively.

Explanation of Solution

  EBK MANUFACTURING PROCESSES FOR ENGINEE, Chapter 5, Problem 5.62P , additional homework tip  1

Figure 5.4b

Figure drawn below shows the detailed view of microstructure above and below the eutectoid temperature of 727°C .

  EBK MANUFACTURING PROCESSES FOR ENGINEE, Chapter 5, Problem 5.62P , additional homework tip  2

Figure 2

At 750°C , the alloy is in single phase austenite (gamma) region, therefore, the gamma percentage is 100% and the alpha percentage is 0% .

Conclusion:

Therefore, the amount of alpha and gamma phases at temperature 750°C are 0% and 100% respectively.

(b)

To determine

The amount of alpha and gamma phases at temperature 728°C .

(b)

Expert Solution
Check Mark

Answer to Problem 5.62P

The amount of alpha and gamma phases at temperature 728°C are 23% and 77% respectively.

Explanation of Solution

Formula used:

The expression for the alpha percentage is given as,

  %α=(xγxoxγxa)×100

Here, xγ is the solubility of the gamma, xo is the solubility of the reference material, and xa is the solubility of the solubility of the cubic iron.

The expression for the gamma percentage is given as,

  %γ=(xoxaxγxa)×100

Calculation:

The alpha percentage can be calculated as,

  %α=( x γ x o x γ x a )×100%α=( 0.770.60 0.770.022)×100%α=23%

The gamma percentage can be calculated as,

  %γ=( x o x a x γ x a )×100%γ=( 0.600.022 0.770.022)×100%γ=77%

Conclusion:

Therefore, the amount of alpha and gamma phases at temperature 728°C are 23% and 77% respectively.

(c)

To determine

The amount of alpha and gamma phases at temperature 726°C .

(c)

Expert Solution
Check Mark

Answer to Problem 5.62P

The amount of alpha and gamma phases at temperature 726°C are 91% and 0% respectively.

Explanation of Solution

At 726°C the alloy is in two phases alpha and Fe3C field. At this moment no gamma phase is present.

Formula used:

The expression for the alpha percentage is given as,

  %α=(xγxoxγxa)×100

Calculation:

The alpha percentage can be calculated as,

  %α=( x γ x o x γ x a )×100%α=( 6.670.60 6.670.022)×100%α=91%

Conclusion:

Therefore, the amount of alpha and gamma phases at temperature 726°C are 91% and 0% respectively.

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Chapter 5 Solutions

EBK MANUFACTURING PROCESSES FOR ENGINEE

Ch. 5 - Prob. 5.11QCh. 5 - Prob. 5.12QCh. 5 - Prob. 5.13QCh. 5 - Prob. 5.14QCh. 5 - Prob. 5.15QCh. 5 - Prob. 5.16QCh. 5 - Prob. 5.17QCh. 5 - Prob. 5.18QCh. 5 - Prob. 5.19QCh. 5 - Prob. 5.20QCh. 5 - Prob. 5.21QCh. 5 - Prob. 5.22QCh. 5 - Prob. 5.23QCh. 5 - Prob. 5.24QCh. 5 - Prob. 5.25QCh. 5 - Prob. 5.26QCh. 5 - Prob. 5.27QCh. 5 - Prob. 5.28QCh. 5 - Prob. 5.29QCh. 5 - Prob. 5.30QCh. 5 - Prob. 5.31QCh. 5 - Prob. 5.32QCh. 5 - Prob. 5.33QCh. 5 - Prob. 5.34QCh. 5 - Prob. 5.35QCh. 5 - Prob. 5.36QCh. 5 - Prob. 5.37QCh. 5 - Prob. 5.38QCh. 5 - Prob. 5.39QCh. 5 - Prob. 5.40QCh. 5 - Prob. 5.41QCh. 5 - Prob. 5.42QCh. 5 - Prob. 5.43QCh. 5 - Prob. 5.44QCh. 5 - Prob. 5.45QCh. 5 - Prob. 5.46QCh. 5 - Prob. 5.47QCh. 5 - Prob. 5.48QCh. 5 - Prob. 5.49QCh. 5 - Prob. 5.50QCh. 5 - Prob. 5.51QCh. 5 - Prob. 5.52QCh. 5 - Prob. 5.53QCh. 5 - Prob. 5.54QCh. 5 - Prob. 5.55QCh. 5 - Prob. 5.56QCh. 5 - Prob. 5.57QCh. 5 - Prob. 5.58QCh. 5 - Prob. 5.59QCh. 5 - Prob. 5.60QCh. 5 - Prob. 5.61PCh. 5 - Prob. 5.62PCh. 5 - Prob. 5.63PCh. 5 - Prob. 5.64PCh. 5 - Prob. 5.65PCh. 5 - Prob. 5.66PCh. 5 - Prob. 5.67PCh. 5 - Prob. 5.68PCh. 5 - Prob. 5.69PCh. 5 - Prob. 5.70PCh. 5 - Prob. 5.71PCh. 5 - Prob. 5.72PCh. 5 - Prob. 5.73PCh. 5 - Prob. 5.74PCh. 5 - Prob. 5.75PCh. 5 - Prob. 5.76PCh. 5 - Prob. 5.77PCh. 5 - Prob. 5.78PCh. 5 - Prob. 5.79PCh. 5 - Prob. 5.80PCh. 5 - Prob. 5.81PCh. 5 - Prob. 5.82PCh. 5 - Prob. 5.83PCh. 5 - Prob. 5.84PCh. 5 - Prob. 5.85PCh. 5 - Prob. 5.86PCh. 5 - Prob. 5.87PCh. 5 - Prob. 5.88PCh. 5 - Prob. 5.89PCh. 5 - Prob. 5.90PCh. 5 - Prob. 5.91PCh. 5 - Prob. 5.92PCh. 5 - Prob. 5.93DCh. 5 - Prob. 5.94DCh. 5 - Prob. 5.95DCh. 5 - Prob. 5.96DCh. 5 - Prob. 5.97DCh. 5 - Prob. 5.98DCh. 5 - Prob. 5.99DCh. 5 - Prob. 5.100DCh. 5 - Prob. 5.101DCh. 5 - Prob. 5.102DCh. 5 - Prob. 5.103DCh. 5 - Prob. 5.104DCh. 5 - Prob. 5.105DCh. 5 - Prob. 5.106DCh. 5 - Prob. 5.107DCh. 5 - Prob. 5.108DCh. 5 - Prob. 5.109DCh. 5 - Prob. 5.110DCh. 5 - Prob. 5.111DCh. 5 - Prob. 5.112DCh. 5 - Prob. 5.113DCh. 5 - Prob. 5.114DCh. 5 - Prob. 5.115D
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