栗丽,张雯,张春林,王旭

• 1:北京汽车股份有限公司汽车研究院

摘要(Abstract)：

选取国内某车企车型B柱加强板作为研究对象,考察国产材料所制得的B柱加强板的零部件化学成分、力学性能、硬度、金相、脱碳层厚度、残余应力以及尺寸等是否满足要求;分析结果表明,在不影响原设计生产工艺的情况下,得到的热成形零部件的显微硬度可达460 HV10,屈服强度达1 100 MPa,抗拉强度达到1 500 MPa,且与进口材料所得零部件性能相近,均满足设计要求;尺寸性能以及残余应力分布基本满足要求,切换后对工程化基本没有影响,可实现国产化热成形材料代替进口材料。

关键词(KeyWords)： B柱加强板;热冲压成形;高强钢

Abstract:

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基金项目(Foundation):

作者(Author): 栗丽,张雯,张春林,王旭

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