Steel sheet for hot forming, hot-formed member, and method for manufacturing same
A steel sheet with an alloy plating layer containing silicon, zinc, and iron intermetallic compounds addresses hydrogen embrittlement and corrosion issues in hot-formed components, enhancing their strength and resistance.
WO2026127653A1 Publication Date: 2026-06-18POHANG IRON & STEEL CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- POHANG IRON & STEEL CO LTD
- Filing Date
- 2025-12-10
- Publication Date
- 2026-06-18
AI Technical Summary
⚠Technical Problem
Hot-formed steel components are prone to hydrogen embrittlement due to residual stress and increased diffusible hydrogen, limiting their application, and existing solutions like controlling alloy composition and using Ni pre-plating are costly and have limitations.
⚗Method used
A steel sheet for hot forming with an alloy plating layer comprising silicon, zinc, and iron, forming intermetallic compounds like Fe2Al5(Zn,Si) and FeAl3(Zn,Si), which suppresses hydrogen penetration and improves corrosion resistance.
🎯Benefits of technology
The steel sheet provides enhanced resistance to hydrogen embrittlement and corrosion, ensuring ultra-high strength and lightweight properties in hot-formed members.
✦ Generated by Eureka AI based on patent content.
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Abstract
The present invention relates to a steel sheet suitable for hot forming. More specifically, the present invention relates to a steel sheet for hot forming, a hot-formed member, and a method for manufacturing same.
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