Techniums (Technii?) were made in Kent, Washington, just south of the Boeing plant in Seattle, between 1986 and 1993 if memory serves. Raleigh needed Boeing's expertise in bonding dissimilar metals - which is what the Technium process is.
In your case, I believe the Olympian frame consists of aluminum main tubes bonded to cromoly lugs, the most common configuation.
I like these frames. I've always thought they rode better than their pay grade, almost like a better grade of steel. Not soft, but definitely not harsh either, a nice balance. And no, I've never seen a frame come apart, if you have fears of the bonding process.
When times were good, ~$150, fully refurb'd & ready to go. Today, no clue what these bring.