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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  987
What are the superalloys used for?    2  1187
What are the superalloys?    3  2696
Why is non-destructive testing necessary?    9  2517
What kinds of NDT methods are available?    9  4114
What kind of components are fabricated from the superalloys, and what are their roles?    2  795
Why are the superalloys used for land-based turbines?    1  746
What kind of shell systems are used for investment casting?    2  862
What is investment casting?    3  1080
Is it possible to design heat treatment processes such that a gradient in grain size is produced?    4  798
How can Residual stresses in superalloy components can be minimised?    1  968
The processes used to fabricate the superalloys seem fairly mature. Is much process development going on?    2  643
What is Vacuum Induction Melting ?    3  1021
Why do some of the latest 'single crystal' superalloys contain concentrations of the grain boundary strengthening elements, e.g. carbon and boron?    0  319
What happens to the microstructure during service exposure?    0  421
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Un-Answered Questions
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i need manual solution of diffusion in solid(shewmon) if you have plz send for me. tank you my email : 1006
where do i get previous question papers of metallurgy? 387
what is No.1 Laathing Scrap Bundle ( Mill Scrap ) 408
How to melt the solidified copper accretions in copper scrap melting furnace? 183
what are different grades of mild steel available for making machine structure (housing) 750
Why are the superalloys sometimes subjected to secondary melting processes? 383
What is chemical composition and mechanical properties of IS 2004,Gr-3 and IS 305 AB-2? 1547
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
dear sir i need some information about prevent eutectic carbide network(as cast) formation in 12% cr steel casting by another alloying element(my analays: c=1.2-1.4 cr=11-13 mo=0.2-0.4 ni=0.2-0.4 )or break network carbid after formation in solidification by heat tretment please help me my email adress: 440
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? 647
sir please send me previous question papers on metallurgy at .....thank you 291
i m going to give an interview for iocl on 5th aug . pls tell me what questions can be answered from metallurgical prospect 661
any input on how to spec out(if possible) a larger grain structure(3/8" or larger) on a Al 6061 forging material. 375
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 ? 386
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