Plated steel sheet and method for manufacturing same

A plated steel sheet, comprising;

• a steel sheet and a plating layer disposed on a surface of the steel sheet, and having a tensile strength of 1150 MPa or more,
• wherein the steel sheet included in the plated steel sheet has a composition comprising:
• C:
• 0.150 to 0.250 mass %;
• Si:
• 0.80 to 2.20 mass %;
• Mn:
• 1.50 to 2.80 mass %;
• Cr:
• 0.15 to 1.50 mass %;
• Ti:
• 0.012 to 0.100 mass %;
• B:
• 0.0015 to 0.0100 mass %;
• P:
• 0.100 mass % or less (including 0 mass %);
• S:
• 0.050 mass % or less (including 0 mass %);
• Al:
• 0.005 to 1.000 mass %;
• N:
• 0.0100 mass % or less (including 0 mass %);
• and
• Fe, and
• wherein the steel sheet included in the plated steel sheet has a metal microstructure in which:
• a total of bainite and tempered martensite account for 95 area % or less;
• retained austenite accounts for 5 vol % or more;
• a total of polygonal ferrite and bainitic ferrite accounts for 5 area % or less;
• and a balance of the metal microstructure accounts for 5 area % or less.