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Your friend in the lab has been working with a 90% Dc, 10% Vr alloy and developed the time-temperature transformation (TTT) diagram below, including the formation of a martensite (M) phase.   You have 3 pieces of this alloy in your furnace currently held at 800 °C. State the steps that you would need to obtain this alloy with the following phase fractions at room temperature:     i.   100 % eta (η) phase     ii.  100 % beta (β) phase     iii. 50% martensite (M), 50% beta (β) phas

Your friend in the lab has been working with a 90% Dc, 10% Vr alloy and developed the time-temperature transformation (TTT) diagram below, including the formation of a martensite (M) phase.   You have 3 pieces of this alloy in your furnace currently held at 800 °C. State the steps that you would need to obtain this alloy with the following phase fractions at room temperature:     i.   100 % eta (η) phase     ii.  100 % beta (β) phase     iii. 50% martensite (M), 50% beta (β) phas

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Your friend in the lab has been working with a 90% Dc, 10% Vr alloy and developed the time-temperature transformation (TTT) diagram below, including the formation of a martensite (M) phase.

 

You have 3 pieces of this alloy in your furnace currently held at 800 °C. State the steps that you would need to obtain this alloy with the following phase fractions at room temperature:

    i.   100 % eta (η) phase

    ii.  100 % beta (β) phase

    iii. 50% martensite (M), 50% beta (β) phase

1600- 1538 1475 L 1400- 1394 8 (Vr) ɛ (Dc) 1230 1246 1200- 1155 1138 1100 1000- Y (Vr,Dc) n (Dc) 912 800- 727 690 600- 400- B (Dc) 200- 250 B a (Vr) 10 20 30 40 50 60 70 80 90 100 Vr wt. % Dc Temperature, °C
Transcribed Image Text:1600- 1538 1475 L 1400- 1394 8 (Vr) ɛ (Dc) 1230 1246 1200- 1155 1138 1100 1000- Y (Vr,Dc) n (Dc) 912 800- 727 690 600- 400- B (Dc) 200- 250 B a (Vr) 10 20 30 40 50 60 70 80 90 100 Vr wt. % Dc Temperature, °C
800 n (stable) 730 °C T(°C) in 600 400 in 100% M. Mgo 200 102 104 106 100 time (s) 50%, 0%
Transcribed Image Text:800 n (stable) 730 °C T(°C) in 600 400 in 100% M. Mgo 200 102 104 106 100 time (s) 50%, 0%
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