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7. Using the phase diagram for Cd-Zn alloy system, calculate the fraction of eutectic microconstituent and...
1. Below is the phase diagram of Pb-Sn alloy. (a) Describe what happens to a 20%-Pb 80%-Sn alloy as temperature decreases from 300 °C to 50 °C; use sketches as needed. (b) When temperature is kept constant at 200 °C, describe what happens as the Sn concentration is increased from 10 wt% to 90 wt%; use sketches as needed. 100% Liquid Procutectic α 24% Eutectic α Liquid 76% Eutectic β Alloy I Alloy 2 Liquid 49% 327 Liquidus 300 Liquid...
QUESTION 3: Consider 2 kg of tin-bismuth alloy (Sn-Bi) containing 30 wt% Bi. The phase diagram of the alloy is shown in the figure below. The alloy is cooled to 138 °C (just below the eutectic temperature). 300 2710 232°C © 200 BiL B+L Temperature (°C) 1390 21 57 100 B.Bi BI 13'c 0 20 40 60 80 100 (BO) (Sn) Composition (wt%B1) a) What is the proeutectic phase? b) How many kilograms of total phase B and Bi form?...
Hypothetical phase diagram for A-B system is given below. A and B are both metals and atomic mass of B is much higher than that of A. ㄒ 421°C A 10.2 24.3 i) il in the boxes in the figure with proper phases. The following transformation reaction for the eutectic point for α and β phases is given; 1s3a123+B20.1 at 421°C iii) For an A-B mixture with a wt% of 18 at 420°C (alloy 1) and that with wt% of...
10. In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down.....(5 points) Composition (at% Zn) 20 40 60 80 12000 100 2200 2000 a + L a+2 Liquid 1000 1800 BUL 1600 800 a 1400 B Temperature (°C) a Temperature (°F) B 8 +L...
10. In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down.....(5 points) a)The figure needs to be part of your answer sheet Composition (at% Zn) 20 1200 40 60 100 12200 80 2000 a+L Liquid 1000 1800 B+L 1600 800 1400 3 B Temperature...
10. In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down.....(5 points) Composition (at% Zn) 20 40 60 80 12000 100 2200 2000 a + L a+2 Liquid 1000 1800 BUL 1600 800 a 1400 B Temperature (°C) a Temperature (°F) B 8 +L...
In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down. a)The figure needs to be part of your answer sheet Composition (at% Zn) 0 20 40 60 80 1200 100 12200 2000 a + L Liquid 1000 1800 B+L 1600 800 + 1400 B...
2. [25 points] The following figure shows the phase diagram of Cu-Ag alloy system. A mixture of Ag and Cu with a eutectic composition (or concentration) is heated to a high temperature and keep for enough time to prepare the material into a uniform liquid state. The material is then cooled down to 800°c. Cu-Ag System 1200 Liquid 800 A 600 400 100 80 60 40 20 wt% Ag a) What is the Ag composition in the original material so...
Sn is cooled from its liquid state from 300°C. Use Lead-Tin phase diagram in the text.book (Textbook: Fundamentals of Materials Science & Engineering: Smith and Hashemi; 6th Edition) and answer the following a. Calculate the weight percent of the liquid at 250°c? b. Calculate the weight percent of the proeutectic alpha at 250°C? c. Calculate the weight percent of liquid phase just above the eutectic temperature (183°C) and weight in kilograms of this phase? D. Calculate the weight percent of...
10. In the following phase diagram for Zn-Cu Alloy. Label one eutectic, eutectoid and peritectic point and write down the reactions and all other relevant details. Also explain the eutectoid reaction i.e. why does one solid phase convert to two solid phases as the alloy cools down.....(5 points) a)The figure needs to be part of your answer sheet Composition (at% Zn) 20 40 60 80 1200 100 2200 2000 a + L Liquid 1000 1800 B+L 1600 800 1400 €...