Are the grain boundaries a continuation of regular lattice structure from one grain to another? Explain.

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Do you know define what metal might be considered the “most environmental”? I say aluminum because it can be recycled others on my team say brass.

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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.

0 Answers   Novellus,

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What is meant by powder metallurgy?

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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: alloymail@gmail.com

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What is hardest cutting tool material?

0 Answers   NIC,

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Which is the only liquid in which gold is dissolved?

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What kind of components are fabricated from the superalloys, and what are their roles?

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We make aluminum moulds by press casting, can you suggest any thing so that the moulds should shine after casting?

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Explain cementite?

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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 ?

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what kind of cleaning substance or treatments keep or help prevent cast iron from rusting?

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