Earth-boring tools and methods of forming earth-boring tools

A fixed-cutter earth-boring tool, comprising:

• a first blade comprising a first blade body, the first blade body consisting essentially of a first material having a first elastic modulus at a temperature;
• and
• a second blade comprising a second blade body, the second blade body consisting essentially of a second material having a second elastic modulus at the temperature, the second elastic modulus different from the first elastic modulus;
• wherein at least one surface of the second blade body defines an open space and wherein the second blade body is configured such that a force operative on the second blade body causes a change in volume of the open space.

A method of forming an earth-boring tool, comprising:

• forming a bit body having a plurality of blades, a first blade comprising a first blade body and a second blade comprising a second blade body, the first blade body consisting essentially of a first material having a first elastic modulus at a temperature, the second blade body consisting essentially of a second material having a second elastic modulus at the temperature, the second elastic modulus different from the first elastic modulus;
• forming an open space within at least one of the first blade body or the second blade body;
• and
• providing at least one cutting element on at least one of the first blade body or the second blade body.