To substitute means to put a person or thing in the place of another; it does not mean to take the place of another. When A is removed and B is put in its place, B is substituted for A, and A is replaced by B.We may write:
The Minister has substituted Jones for Smith as a member of the committee,
but we must not write:
Jones has substituted Smith as a member of the committee
or:
Smith has been substituted by Jones as a member of the committee.
In the last two sentences the verb needed is replaced.