| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbine wheel which has a configuration of remarkably suppressing a stress peak. SOLUTION: There is provided a radial flow turbine wheel 1 including a wheel main body 2 and having a cone-like configuration with a recessed head or a similar whole configuration having a small base part 3 and a large base part 4 and a side face 5 and a blade 6 which is generated from the side face 5 of the wheel main body 2, the wheel 2 including an axial direction extension part 7 of the small base part 3 of the wheel main body 2, the extension part extending beyond an end side surface 8 of the blade 6, at least a part of the side face 5 comprising a shroud 9 and an axial direction hub 10, wherein the side face 5 comprising the shroud 9 and the axial direction hub 10 regulates an axial direction ring-like recessed part 11 of a large base part 4 of the radial flow turbine wheel.
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