GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII (NEW) EXAMINATION - WINTER 2018
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Subject Code: 2172112 Date: 19/11/2018Subject Name: Physical Metallurgy of Special Purpose Non-ferrous Metals and Alloys
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
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2. Make suitable assumptions wherever necessary.3. Figures to the right indicate full marks.
Q.1 (a) Describe how the mechanical properties of Al and its alloys can be increased. 03
(b) Draw and discuss Al-Si Phase diagram. 04
(c) List typical properties of nonferrous alloys and explain any three in detail. 07
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Q.2 (a) Describe the important characteristics of Copper and its alloys. 03
(b) Why copper is a suitable material for automobile radiators? Explain 04
(c) Using Al-Cu phase diagram explain general description of Al-Cu alloy system. 07
OR
(c) Describe different phases with properties present in Cu-Zn phase diagram. 07
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Q.3 (a) What are ALPHA brass and ALPHA/BETA brass? 03
(b) Write effect of Nickel on thermal expansion of Iron & explain Invar 04
(c) Explain Ni base super alloys. Explain importance of gamma prime in Ni base super alloys. 07
OR
Q.3 (a) Explain effect of Following alloying element on properties of Ni and its alloys: Cu, Al 03
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(b) Discuss the heat treatment for sand cast'AZ92A alloy. 04(c) Write a note on High temperature Mg-Alloys. 07
Q.4 (a) Give limitations of Zinc alloys. 03
(b) For Mg alloys deformation is only restricted to {1000} plane and <112"0> direction---comment 04
(c) What is beta Transus temperature & give effect of alloying elements on it. 07
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OR
Q.4 (a) Give the Characteristics and applications of following rare metals and their alloys: Zirconium 03
(b) Give the composition, properties and applications of following lead alloys: terne metal 04
(c) Justify--- Noble metals can be successfully in dentistry. 07
Q.5 (a) What are cupronickels? What is the use of monel metal? 03
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(b) Write a note on tin pest. 04(c) Describe the properties and applications of Lead and lead alloys. 07
OR
Q.5 (a) What are rare metals? Classify rare metals with example of each. 03
(b) Describe the electrical applications and property requirement of Iridium and Osmium. 04
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(c) Discuss typical characteristics of babbits and explain purpose of Cu addition in Tin-Babbits. 07This download link is referred from the post: GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
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