We Claim:
1. A moving blade (10) of a turbo machine,
having a blade root (11),
having a blade leaf (12) comprising a flow leading edge (13), a flow trailing edge (14) and flow-guiding surfaces (15) extending between the flow leading edge (13) and the flow trailing edge (14), characterized in that
the blade root (11) and a radially inner section (17) of the blade leaf (12) are produced from a steel material,
an outer section (18) of the blade leaf (12) is produced from a lighter material,
wherein the radially outer section (18) of the blade leaf (12), which is produced from a light metal alloy material, is deposited on the radially inner section (17) of the blade blade leaf (12) by way of a generative manufacturing method.
2. The moving blade according to Claim 1, characterized in that the lighter material is a light metal alloy material or a ceramic material or a combination thereof.
3. The moving blade according to Claim 1 or 2, characterized in that between the radially inner section (17) of the blade leaf (12) and the radially outer section (18) of the blade leaf (12) a transition region (19) is formed, which is produced from a mixture of the steel material and of the light metal alloy material.
4. The moving blade according to any one of the Claims 1 to 3, characterized in that in the region of the

flow leading edge (13), the radially inner section (17) emanating from the blade root (11) extends up to a minimum of 10 % and a maximum of 98 %, preferably up to a maximum of 60 %, particularly preferably up to a maximum of 50 % of the radial height of the blade leaf (12).
5. The moving blade according to any one of the Claims
1 to 4, characterized in that in the region of the
flow trailing edge (14), the radially inner section
(14), emanating from the blade root (11), extends
up to a minimum of 10 % and maximum of 98 %, preferably up to a maximum of 60 %, particularly preferably up to a maximum of 50 % of the radial height of the blade leaf (12).
6. The moving blade according to any one of the Claims 1 to 5, characterized in that the radially inner section (17) of the blade leaf (12) and the radially outer section (18) of the blade leaf (12) have same size radial extensions in the region of the flow leading edge (13) and the flow trailing edge (14).
7. The moving blade according to any one of the Claims 1 to 5, characterized in that the radially inner section (17) of the blade leaf (12) in the region of the flow leading edge (13) has a smaller and thus the radially outer section (18) of the blade leaf (12) in the region of the flow leading edge (13) a greater radial extension than in the region
of the flow trailing edge (14).
8. The moving blade according to any one of the Claims
1 to 5, characterized in that the radially inner
section (17) of the blade leaf (12) in the region
of the flow leading edge (13) has a greater and
thus the radially outer section (18) of the blade

leaf (12) in the region of the flow leading edge (13) a smaller radial extension than in the region of the flow trailing edge (14).
9. The moving blade according to any one of the Claims
1 to 8, characterized in that in a transition region
(19) between the radially inner section (17) of the
blade leaf (12) and the radially outer section (18) of the blade leaf (12) a material recess (21) and/or a material thickening (20) are/is formed.
10. The moving blade according to Claim 9, characterized in that the material recess (21) and/is the material thickening (20) is formed at least in the region of the flow leading edge (13).
11. A method for producing a moving blade (10) of a turbo machine according to any one of the Claims 1 to 10, having the following steps
the blade root (11) and the radially inner section (17) of the blade leaf (12), which are produced from the steel material, are produced by milling or forging;
the radially outer section (18) of the blade leaf (12), which is produced from the light metal alloy material, is deposited on the radially inner section (17) of the blade leaf (12) through a generative manufacturing method.
12. The method according to Claim 11, characterized in
that as generative manufacturing method, laser
sintering or laser deposition welding is utilised.