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 6843

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

Magnum,

2 3582

What is meant by powder metallurgy?

4 5555




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

TATA, JSW,

2 3110

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

1 3364

Why are the superalloys sometimes subjected to secondary melting processes?

1 1482

When might secondary melting processes be unnecessary?

2 2505

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

1 4983




What happens to the microstructure during service exposure?

1204

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

889

What is Vacuum Induction Melting ?

3 3299

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

2 2517

How can Residual stresses in superalloy components can be minimised?

1 2691

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

4 3242

What is investment casting?

3 4115


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Un-Answered Questions { Metallurgy }

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

889


What is the difference between DI pipes, Cast Iron pipes, LA Pipes, SW pipes, SWR Pipes, RCC hume pipe, RCC spun pipe ? What are their IS codes and applications ?

6274


how can i prevent the backfire occurrence in copper shaft furnaces?

1334


i want to go to US for Bachlore of computer science, I didn't appeared for SAT. my ielts scores are too low only 5.5 band and I am confused if VISA OFFICERS will ask why u hadn't given SAT. what i have to answer pl suggest?

1044


what is a rate controlling step ? how is it dependent on reaction path ? explain with an example.

1711






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.

1257


What is the material of E185

411


what are different grades of mild steel available for making machine structure (housing)

1792


what are the causes of scaling in cast iron, after subjecting it to annealing process.

1295


Any body know when the medicals are starting for the BSI P.O , if anybody got any call letter please let me know

956


The requirement for ASTM A217 Gr. WC9 castings for valves components like Body and Bonnet were Normalising at 920+/- 20 Deg. C and Tempring 780+/- 20 Deg. C The specification calls furnace shall be calibtated within +/-14 deg. C The Heat Chart shows minimum temperature for normalising 900 to 920 Deg. C, but maximum temperature 960-990 Deg. C Tempering 780+/-20 Deg. C is within limits and accepted. Casting having integral test bars, heat trated along with castings passed in chemical znalysis and mechanical properties. Since normalising maximum temperature is not meeting specification, where castings can be salvaged or renormalised and retempered to meet specification. Whether it will have affect on remechanical properties testing

990


What are the chemical composition of cast iron grade 20

849


what is wedge load test method . what is offset method .

735


Witch type curome oxide in ms matle?

1285


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?

362