Titanium-Chromium embrittlement
Titanium-Chromium embrittlement
(OP)
Hi all,
Does anybody know of any potential embrittlement issues of a chromium-titanium interface undergoing 2-3 hours heating at a temperature of about 450-550C? One of my colleagues mentioned offhand that he was told this can bring about a reduction in fatigue life of compressor blades undergoing HCF testing but hasn't provided me with any references, and my knowledge of materials is sketchy at best!
I've done a good few hours of online searches, and my access to proper articles or books is limited; I have had no luck in finding an answer.
Can anyone suggest any articles or books that have this information, or explain why such a reduction may occur?
Much appreciated,
Andy
Does anybody know of any potential embrittlement issues of a chromium-titanium interface undergoing 2-3 hours heating at a temperature of about 450-550C? One of my colleagues mentioned offhand that he was told this can bring about a reduction in fatigue life of compressor blades undergoing HCF testing but hasn't provided me with any references, and my knowledge of materials is sketchy at best!
I've done a good few hours of online searches, and my access to proper articles or books is limited; I have had no luck in finding an answer.
Can anyone suggest any articles or books that have this information, or explain why such a reduction may occur?
Much appreciated,
Andy





RE: Titanium-Chromium embrittlement
That is where I would start.
Look for references to the formation of Ti intermetallic compounds.
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Plymouth Tube
RE: Titanium-Chromium embrittlement
RE: Titanium-Chromium embrittlement
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RE: Titanium-Chromium embrittlement
TVP - it is essentially a thin (~0.3-0.4 micron) Cr-interlayer on a Ti-alloy prior to the gradual phase-in of different metals through a PVD process. We've never experienced any problems with Ti-substrates before tto be honest but I'd like to cover all bases.
metengr - that link proved to be very useful. I think I'll have to have a good look at the patent sie of things to make sure I'm not crossing over anybody else's proven processes.
Many thanks for taking the time out to answer my post.
Andy