High-strength galvanized steel sheet
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United States of America Patent
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May 8, 2018
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app pub date -
Aug 19, 2015
filing date -
Oct 17, 2014
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Abstract
A high-strength galvanized steel sheet comprising a cold-rolled steel sheet, an intermetallic compound formed on the cold-rolled steel sheet, and a galvanizing layer formed on the intermetallic compound, the cold-rolled steel sheet having a specific composition and a microstructure having a martensite area ratio of 7% or more and less than 25% and a ferrite area ratio of 50% or more and which includes a base metal surface portion in which the amount of internal oxides per single side is 0.05 g/m2 or less.
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