High-strength galvanized steel sheet and method for manufacturing the same

A high-strength galvanized steel sheet comprising a base steel sheet and a galvanized layer on a surface of the base steel sheet, wherein

• the base steel sheet has a chemical composition containing, by mass %,
• C:
• 0.12% to 0.35%,
• Si:
• 0.5% to 3.0%,
• Mn:
• 1.5% to 4.0%,
• P:
• 0.100% or less (not including 0%),
• S:
• 0.02% or less (not including 0%),
• Al:
• 0.01% to 1.50%, with the balance being Fe and inevitable impurities, and wherein
• the base steel sheet has a microstructure
• in which an area fraction of martensite is 30% or less, an area fraction of pearlite is 1% or less, a total area fraction of tempered martensite and carbide-containing bainite is 30% or more and 99% or less, an area fraction of retained austenite is 1% to 20%, and a total area fraction of ferrite and non-carbide-containing bainite is 45% or less in the steel sheet microstructure in a region from a position located 300 μm from the steel sheet surface to a position located 400 μm from the steel sheet surface, and
• in which an area fraction of retained austenite grains having two or more crystal orientations is 40% or less in all the retained austenite grains in a region from a position located 300 μm from the steel sheet surface to a position located 400 μm from the steel sheet surface.