(a) Determine the composition of each phase at 1300C, 1250C, and 1200C temperatures. Indicate wt%Ni of the first solid to form and the last liquid to solidify. Show it on phase diagram below. Composition Cat% Ni20406080160010028001500Liquid1453 C26001400Liquidus lineSolidus line1300240012002200110020001085"C100020406080100(CulComposition (wt% NO(Ni)Temperature ("F) (b) Draw the changes in microstructure of Cu-40%Ni alloy during equilibrium solidification at 1300°C,1250°C and 1200°C . See diagram below.(c) Calculate the amount of each phase at those temperatures.

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Determine the composition of each phase at 1300C, 1250C, and 1200C temperatures. Indicate wt%Ni of the first solid to form and the last liquid to solidify. Show it on phase diagram below.

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter26: Welding Metallurgy

Section: Chapter Questions

Problem 12R: What is a eutectic composition?

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Question

(a) Determine the composition of each phase at 1300C, 1250C, and 1200C temperatures. Indicate wt%Ni of the first solid to form and the last liquid to solidify. Show it on phase diagram below.

Composition Cat% Ni
20
40
60
80
1600
100
2800
1500
Liquid
1453 C
2600
1400
Liquidus line
Solidus line
1300
2400
1200
2200
1100
2000
1085"C
1000
20
40
60
80
100
(Cul
Composition (wt% NO
(Ni)
Temperature ("F)

(b) Draw the changes in microstructure of Cu-40%Ni alloy during equilibrium solidification at 1300°C,
1250°C and 1200°C . See diagram below.
(c) Calculate the amount of each phase at those temperatures.

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