Cubic boron nitride sintered material and cutting tool including same

A cubic boron nitride sintered material comprising 72 vol % or more and less than 100 vol % of cubic boron nitride and a binder,

• wherein the binder includes a first chemical species and a second chemical species,
• the first chemical species is at least one type selected from the group consisting of a metal, alloy, intermetallic compound, compound, and solid solution, including at least one first metallic element selected from the group consisting of tungsten, cobalt, and aluminum,
• the second chemical species is a solid solution derived from at least one selected from the group consisting of nitride, carbide, and carbonitride, including at least one second metallic element selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, and chromium,
• in each of the second chemical species, 0.1 atom % to 10 atom % of aluminum is dissolved in a solid state, and
• the second chemical species is grains having an average grain size of 1 μm or less.