Magnesium alloy and production method of the same

A magnesium alloy:

• comprising Ca in an amount of “a” atomic %, Al in an amount of “b” atomic % and a residue of Mg,
• comprising (Mg, Al)2Ca in an amount of “c” volume %,
• wherein “a”, “b” and “c” satisfy the following equations (1) to (4), and
• having said (Mg, Al)2Ca dispersed therein.
• 3≦a≦7 (1)
• 8≦b≦12 (2)
• 1.2≦b/a≦3.0 (3)
• 10≦c≦35 (4)

A production method of a magnesium alloy, comprising the steps of:

• forming a casting product in which Ca is contained in an amount of “a” atomic %, Al is contained in an amount of “b” atomic %, a residual part includes a composition of Mg, (Mg, Al)2Ca is contained in an amount of “c” volume %, wherein “a”, “b” and “c” satisfy the following equations (1) to (4), by casting method, and
• subjecting said casting product to plastic working.
• 3≦a≦7 (1)
• 4.5≦b≦12 (2)
• 1.2≦b/a≦3.0 (3)
• 10≦c≦35 (4)

A production method of a magnesium alloy, comprising the steps of:

• forming a casting product in which Ca is contained in an amount of “a” atomic %, Al is contained in an amount of “b” atomic %, a residual part includes a composition of Mg, (Mg, Al)2Ca is contained in an amount of “c” volume %, wherein “a”, “b” and “c” satisfy the following equations (1) to (4), by casting method, and
• subjecting said casting product to plastic working.
• 3≦a≦7 (1)
• 8≦b≦12 (2)
• 1.2≦b/a≦3.0 (3)
• 10≦c≦30 (4)

A production method of a magnesium alloy, comprising the steps of:

• forming a casting product in which Ca is contained in an amount of “a” atomic %, Al is contained in an amount of “b” atomic %, Zn is contained in an amount of “x” atomic %, a residual part includes a composition of Mg, wherein “a”, “b” and “x” satisfy the following equations (1) to (3) and (20), by casting method, and
• subjecting said casting product to plastic working.
• 3≦a≦7 (1)
• 4.5≦b≦12 (2)
• 1.2≦b/a≦3.0 (3)
• 0<x≦3 (20)