理化检验-物理分册2026，Vol.62Issue(3)：35-40,6.DOI:10.11973/lhjy-wl250259
热冲压成形钢横梁开裂原因
Cause of cracking in hot-stamped steel cross beams
阎换丽 1李晓瑜 1程西西 1高丽1
作者信息
- 1. 中国汽车工程研究院股份有限公司,重庆 401122
- 折叠
摘要
Abstract
A batch of reinforcing cross beams for an automotive battery pack top cover,made from an 1 800 MPa hot-stamped material,exhibited widespread cracking during the stamping process.To investigate the root cause of this cracking,a comprehensive analysis was conducted using macroscopic observation,scanning electron microscopy,metallographic examination,mechanical property testing,and chemical composition analysis.The results revealed that condensation formed on the die surface,producing a significant amount of moisture.During hot stamping,hydrogen atoms diffused into the material,ultimately causing hydrogen embrittlement and resulting in cracking of the components after forming.关键词
热成形/氢致开裂/模具结露/氢脆/热冲压Key words
hot forming/hydrogen-induced cracking/die condensation/hydrogen embrittlement/hot stamping分类
交通工程引用本文复制引用
阎换丽,李晓瑜,程西西,高丽..热冲压成形钢横梁开裂原因[J].理化检验-物理分册,2026,62(3):35-40,6.
