Why do some of the latest 'single crystal' superalloys
contain concentrations of the grain boundary strengthening
elements, e.g. carbon and boron?
What are the componentsof SCS14 ?
does any one has gate solutions of 2007,08,09 metallurgical
what is a rate controlling step ? how is it dependent on
reaction path ? explain with an example.
What happens to the microstructure during service exposure?
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.
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-
Why are the superalloys sometimes subjected to secondary
white rust formation over zinc plated and passivated
fasteners during CED coating. WHY?
IS:1239 same code for MS ERW and Seamless pipes ?
Witch type curome oxide in ms matle?
what should be the exact suction capacity for 3 to 5 mt
capacity lead rotary furnace and length of duct line for
proper suction for same
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 ?
how can i prevent the backfire occurrence in copper shaft
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
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