| 摘要 |
An energy-absorbing structure (10) for a vehicle comprises an energy-absorbing member (1) that folds or crumples on crash impact, the energy-absorbing member (1) being of a functionally-graded material having a less ductile core (12) integral with a more ductile shell (14). The core is preferably of a medium carbon steel or an HSLA steel, with the shell having a lower content of carbon. The energy absorbing member may be made by partial decarburisation of a medium carbon or an HSLA steel member.
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