Metallurgy Interview Questions
Questions Answers Views Company eMail

Why do metallurgy engineers so sucessfull in their profession so that they dont think beyond their dreams?

Magnum,

5 7320

What do you do with the super alloys in the present working culture so as to improve the technology for general people?

Magnum,

2 3869

What is meant by powder metallurgy?

4 6199




Isn't power metallurgy an expensive processing route to employ?

TATA, JSW,

2 3466

What special precautions need to be employed if a powder metallurgy route is chosen?

1 3655

Why are the superalloys sometimes subjected to secondary melting processes?

1 1776

When might secondary melting processes be unnecessary?

2 2767

Why do the Gamma Prime and Gamma Double Prime phases play such an important role in promoting strength in the superalloys?

1 5415




What happens to the microstructure during service exposure?

1327

Why do some of the latest 'single crystal' superalloys contain concentrations of the grain boundary strengthening elements, e.g. carbon and boron?

1015

What is Vacuum Induction Melting ?

3 3609

The processes used to fabricate the superalloys seem fairly mature. Is much process development going on?

2 2766

How can Residual stresses in superalloy components can be minimised?

1 3008

Is it possible to design heat treatment processes such that a gradient in grain size is produced?

4 3578

What is investment casting?

3 4558


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Un-Answered Questions { Metallurgy }

what are metallurgical microscopes?

15


How to calculate heat affected zone in weld?

14


Explain the purpose of riser?

27


What is the use of core prints?

27


what is the hardness of ohns before heat treatment process and hardness of en series before heat treatment process

7






I currently use 17-7 PH stainless which is hardened to condition CH after forming. raw matl is .1.75"X .12" X .008". Its main usage after hardening is silicon wafer retainer where it's contantly cycled up and down to putin and remove wafer after 40-60 sec process at 400C temp. At this high temperature this part seemed to deform after a a couple of hundred wafer which is what it was designed for in the first place. THere is a proposal to go to a different material to increase lifeline of this part. My question is..... can 321 SST be a plugin replacement. I know this has a higher temp rating but how about its forming characteristics, will it have spring properties, and wont become brittle after prolonged exposure to 400C.

1386


On which basis annealing cycle of steel bars of UpTo 6 MTR can be decided.we r charging 40-45 metric ton load for annealing in bogie furnace?

486


How can you find out define what kind of stainless steel was used in making a stainless object?

12


What are ceramics?

7


What is tack welding ?

31


What is recrystallization?

11


What is Redlich Kwong equation?

31


Define grinding.

30


what is special about the properties of chromium molybdenum steels that make them ideal for pressure vessels?

14


Define what are ceramics?

57