| 摘要 |
PROBLEM TO BE SOLVED: To provide a nickel alloy for producing a structural member solidified as single crystal by a casting method, which has advantageous characteristics such as high mechanical strength high thermal stability and low density, and suppressing to creep by optimizing a ratio of rhenium and tungsten, and also, has characteristics as those of a structural member. SOLUTION: The nickel alloy for producing a structural member solidified as single crystals contains rhenium, tungsten, and the other elements such as aluminum, chromium and cobalt. In the alloy, the rhenium content is controlled to >=2.3 wt.%, and the weight ratio of the tungsten content to the rhenium content is controlled to 1.1 to 1.6.
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