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发明授权
CN108431286B 抑制微细裂纹的热压成型品及其制造方法 有权

抑制微细裂纹的热压成型品及其制造方法
摘要：
本发明公开一种热压成型品及其制造方法，所述热压成型品通过对锌系镀覆钢板进行热压成型而制造，所述锌系镀覆钢板包括基础钢板及形成在所述基础钢板表面的锌系镀层，所述锌系镀层包含合计0.05～2.0重量％的选自由Sb、Sn及Bi组成的组中的一种以上的元素、余量的Zn及不可避免的杂质，70重量％以上的选自由Sb、Sn及Bi组成的组中的一种以上的元素浓缩在从所述热压成型品的合金化锌系镀层的表面到3μm以内的区域中，所述合金化锌系镀层由所述锌系镀层被合金化而形成。
摘要（英）：

Disclosed are a hot press-formed article and a method for manufacturing the same. The article is manufactured by hot press forming a galvanized steel sheet comprising a base steel plate and a zinc-based coat layer formed on a surface of the base steel plate, wherein the zinc-based coat layer contains at least one element selected from the group consisting of Sb, Sn and Bi in a total amount of 0.05% to 2.0% by weight, and the balanced amount of Zn and inevitable impurities, at least 70% by weight of the at least one element selected from the group consisting of Sb, Sn and Bi being concentrated in a region 3µm or less distant from the surface of an alloyed zinc-based coat layer, formed by alloying the zinc-based coat layer, of the hot press-formed article.

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