Download GTU BE/B.Tech 2019 Winter 7th Sem New 2172112 Physical Metallurgy Of Special Purpose Non Ferrous Metals And Alloys Question Paper

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Subject Code: 2172112

GUJARAT TECHNOLOGICAL UNIVERSITY

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BE - SEMESTER- VII (New) EXAMINATION — WINTER 2019

Date: 26/11/2019

Subject Name: Physical Metallurgy of Special Purpose Non-ferrous Metals and Alloys

Time: 10:30 AM TO 01:00 PM

Instructions:

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1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1

1. (a) Explain important characteristics of non-ferrous metals and alloys. (03)

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2. (b) Discuss about alloy designation system of Aluminum alloys. (04)
3. (c) Classify the Tin-bronze and describe properties and applications of one example of each. (07)

Q.2

1. (a) Describe the important characteristics of Copper and its alloys. (03)
2. (b) Justify---- Zn is added in Mg-Al alloys to improve strength (04)

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3. (c) Using Al-Mn phase diagram explain general description of Al-Mg alloys system. (07)

OR

1. (a) Describe the typical composition, properties and applications of Ni-Cr-Al alloys. (07)
2. (b) Limitations of non-ferrous metals & alloys. (03)
3. (c) Using the Al-Cu alloy system as an example, explain the concept of precipitation heat treatment. (04)

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Q.3

1. (a) Draw and describe the Mg-Zn phase diagram: (07)
2. (b) Write effect of Nickel on thermal expansion of Iron. (03)
3. (c) Selection of Ti-alloys for service. (04)

OR

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1. (a) Explain the solution heat treatment and aging process for Titanium alloys. (03)
2. (b) Give a detailed classification-of Magnesium alloys. (04)
3. (c) Describe the methods to‘increase high temperature strength of Mg alloys. (07)

Q.4

1. (a) Write a note on heat treatment of Lead alloys. (03)

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2. (b) Give the compositions, properties and applications of any one heat treatable Titanium alloys (04)
3. (c) Describe the properties and applications of Zinc and its alloys. (07)

OR

1. (a) Using Pb-Sb Phase diagram describe the characteristics of Lead- Babbits. Give its typical composition and applications. (03)
2. (b) Give limitations of Zinc alloys. (04)

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3. (c) Write a note on tin pest. (07)

Q.5

1. (a) Write a note on electrical applications of different precious metals. (03)
2. (b) What are rare metals? Classify rare metals with example of each. (04)
3. (c) Give the composition, properties and applications of following Babbits: Cadmium-based Babbitt’s. (07)

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OR

1. (a) Write a note on heat treatment of Nickel alloys. (07)

Total Marks: 70