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 Categories >> Engineering >> Metallurgy
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Question Asked @ Answers Views     Select
what is the cause of attenuation due to powerloss    1  989
What are the superalloys used for?    2  1190
What are the superalloys?    3  2700
Why is non-destructive testing necessary?    9  2525
What kinds of NDT methods are available?    9  4119
What kind of components are fabricated from the superalloys, and what are their roles?    2  799
Why are the superalloys used for land-based turbines?    1  750
What kind of shell systems are used for investment casting?    2  863
What is investment casting?    3  1081
Is it possible to design heat treatment processes such that a gradient in grain size is produced?    4  806
How can Residual stresses in superalloy components can be minimised?    1  969
The processes used to fabricate the superalloys seem fairly mature. Is much process development going on?    2  646
What is Vacuum Induction Melting ?    3  1027
Why do some of the latest 'single crystal' superalloys contain concentrations of the grain boundary strengthening elements, e.g. carbon and boron?    0  320
What happens to the microstructure during service exposure?    0  422
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Un-Answered Questions
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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. 497
i m going to give an interview for iocl on 5th aug . pls tell me what questions can be answered from metallurgical prospect 664
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 ? 390
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? 427
What is the chemical composition of FCVS350 ? 219
what are the causes of scaling in cast iron, after subjecting it to annealing process. 455
For the same part, it is possible to Specify the two different type of Hardness with same scall(EX-Quenching and tempering==>450 to 500HV30 & Hardening and Austempering 330- 380HV30) 286
white rust formation over zinc plated and passivated fasteners during CED coating. WHY? 657
what is a rate controlling step ? how is it dependent on reaction path ? explain with an example. 420
where do i get previous question papers of metallurgy? 388
does any one has gate solutions of 2007,08,09 metallurgical engg papers? 688
How to melt the solidified copper accretions in copper scrap melting furnace? 186
what are different grades of mild steel available for making machine structure (housing) 751
i need manual solution of diffusion in solid(shewmon) if you have plz send for me. tank you my email : 1009
What are the componentsof SCS14 ? 797
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