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 satisfying following formulas (1) and (2):
• T
• ⁢
• S
• max
• -
• ⁢
• T
• ⁢
• S
• min
• <
• 20
• ⁢
• MPa
• ,
• (
• 1
• )
• T
• ⁢
• S
• min
• ≥
• 980
• ⁢
• MPa
• ,
• (
• 2
• )
• wherein TSmax is a maximum tensile strength measured at five different positions in a sheet width direction of the plated steel sheet, and TSmin is a minimum tensile strength measured at the five positions,
• wherein the steel sheet in the plated steel sheet has a composition comprising:
• C:
• 0.150 to 0.300 mass %;
• Si:
• 0.80 to 2.20 mass %;
• Mn:
• 1.60 to 2.80 mass %;
• Al:
• 0.300 to 0.800 mass %;
• Ti:
• 0.010 to 0.050 mass %;
• P:
• 0.050 mass % or less (including 0 mass %);
• S:
• 0.0100 mass % or less (including 0 mass %);
• N:
• 0.0100 mass % or less (including 0 mass %);
• and
• iron and inevitable impurities, and
• wherein the steel sheet in the plated steel sheet has a metal microstructure in which:
• a total of ferrite and upper bainite accounts for 30 to 70 area %, tempered martensite accounts for 10 to 45 area %, MA accounts for 5 to 35 area % and retained austenite accounts for 5 to 20 vol %, and
• wherein, when a sheet width is W, the five positions include two positions of W/10 to W/8 from both ends toward a center in the sheet width direction, two positions of W/4 from the both ends toward the center in the sheet width direction, and one position of the center in the sheet width direction.