Alloy Depletion
Alloy Depletion
(OP)
I need to create some samples that exhibit alloy depletion in Ni-based superalloys. I've looked all over online and in my ASM Handbooks and can't find any general info on alloy depletion. I'm a metallurgist, so I know in general what it is. But I need more specifics if going to generate my own samples. Any input from some seasoned veterans out there?





RE: Alloy Depletion
Could you please explain exactly what you need in your OP? For example, is this for gas turbine blades or a Ni-base alloy component that experienced some type of corrosion resulting in a dealloying problem?
RE: Alloy Depletion
RE: Alloy Depletion
So, you need to actually make coupons from various gas turbine blade alloys to demonstrate your lab's capability in recognizing the damage and to qualify a repair?
RE: Alloy Depletion
RE: Alloy Depletion
We have a number of combustion turbines in our fleet. I would recommend that you purchase the following two books to really understand the metallurgy of Ni-base superalloys;
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I had the company I work for purchase both of these excellent reference books to help me better understand the metallurgy, application and damage mechanisms of gas turbine blades.
RE: Alloy Depletion
I would think you could create samples of alloy depletion by running them in an oxidizing atmosphere at varying temperatures and times. Your sample is most likely using an etchant to microscopically detect an alloy depletion zone. Even certain vacuum furnace conditions could cause alloy depletion.
RE: Alloy Depletion
Thanks for the input. I do have vacuum furnaces available to me. Do you have more details you can give on how to cause alloy depletion in vacuum? I prefer to use vacuum over oxidizing atmosphere.
RE: Alloy Depletion
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Plymouth Tube
RE: Alloy Depletion
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