Turbine blade or vane

1. A turbine blade or vane, comprising:

a main blade region;

a platform associated with the main blade region; and

a transition between the main blade region and the platform, the transition having a rounded outer contour profile;

wherein the main blade region and a region of the platform and the transition have a hollow interior; and

wherein an inner contour profile of the transition is matched to the rounded outer contour profile of the transition in such a manner that there is a substantially uniform blade wall thickness in the region of the transition; and

wherein an inner contour profile of the platform is recessed to form a concavity.

2. The turbine blade or vane as claimed in claim 1 , wherein the blade has a radial axis, and the transition is formed so as to radially surround the radial axis.

3. A turbine blade or vane, comprising:

a blade region;

at least one platform; and

a transition extending between the main blade region and the at least one platform;

wherein a region of the transition and the platform has a hollow interior;

wherein the transition has a curved outer contour profile; and

wherein the transition has an inner contour profile that matches the curved outer contour profile.

4. The turbine blade or vane according to claim 3 , wherein a wall thickness of the blade region is substantially constant.

5. A turbine blade or vane, comprising:

a main blade region;

a platform associated with the main blade region; and

a transition between the main blade region and the platform;

wherein the main blade region, the platform, and the transition define a hollow cavity;

wherein a width of the hollow cavity in the main blade region is smaller than a width of the hollow cavity in the region of at least one of the transition and the platform; and

wherein an inner contour profile of the platform is recessed to form a concavity.