Coupling members for coupling a body of an earth-boring drill tool to a drill string, earth-boring drilling tools including a coupling member, and related methods

An earth-boring drilling tool, comprising:

• a body;
• and
• a coupling member attached to the body for coupling the body to a drill string, the coupling member comprising:
• a distal region comprising a first material composition;
• and
• a proximal region comprising a second, different material composition.

A method of attaching a body of an earth-boring drilling tool to a coupling member, the method comprising:

• forming a coupling member for coupling the body to a drill string comprising:
• forming a distal region of the coupling member to comprise a first material;
• and
• forming a proximal region of the coupling member to comprise a second material differing from the first material;
• and
• attaching the coupling member to the body.