I think this example might be referred to as a "cast" steel knife as it was made from the clamp part, which is a steel casting...

As a footnote, when you take two crucible or "cast" steels and marry them by forge welding, you then do not have an "either/or" result. So to say it is "cast or weld" is not entirely accurate. Reason being, it may be "cast" and welded.

It would not be incorrect to accuse me of semanticist tendencies nor, would I take umbrage. I do so for clarity.
And, troll value....Lolz