Mechanical properties and microstructure of IF resistance spot welded joint of hot stamping 22MnB5 boron steel - 文章详情页

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摘要：

Intermediate　frequency　resistance　spot　welding　was　used　in　hot　stamping　high　strength　steel　(HSHSS)　22MnB5　of　2　mm　thick　specimens,　obtaining　a　sound　connection　by　using　reasonable　welding　parameters.　The　microstructure　and　mechanical　properties　of　the　joints　of　IF　resistance　spot　welding　for　hot　stamping　22MnB5　were　analyzed.　Shearing　tension　and　cross　tension　tests　of　spot　welding　joints　were　carried　out.　Discussion　of　the　welding　performances　was　presented,　and　hardness　distribution　and　fracture　mode　of　the　joint　cross-section　were　tested　and　evaluated.　The　regulations　of　the　different　resistance　spot　welding　specifications　influencing　on　the　mechanical　properties　were　founded.　The　results　show　that　IF　resistance　spot　welding　joints　have　good　mechanical　properties　by　using　reasonable　IF　resistance　spot　welding　process　and　the　mechanical　performance　completely　meet　the　actual　need　of　products.

关键词：

22MnB5; HSHSS; IF resistance spot welding; Mechanical property

作者机构：

[ 1 ] [Bai, S.-J.]Adv. Manufacturing Technol. for Automotive Structural Components Eng. Center of the Educ. Ministry, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Wang, C.]Adv. Manufacturing Technol. for Automotive Structural Components Eng. Center of the Educ. Ministry, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Chen, S.-J.]Adv. Manufacturing Technol. for Automotive Structural Components Eng. Center of the Educ. Ministry, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Yu, Y.]Adv. Manufacturing Technol. for Automotive Structural Components Eng. Center of the Educ. Ministry, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Lu, Z.-Y.]Adv. Manufacturing Technol. for Automotive Structural Components Eng. Center of the Educ. Ministry, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Bai, L.-L.]Adv. Manufacturing Technol. for Automotive Structural Components Eng. Center of the Educ. Ministry, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

[Bai, S.-J.]Adv. Manufacturing Technol. for Automotive Structural Components Eng. Center of the Educ. Ministry, Beijing University of Technology, Beijing 100124, China

电子邮件地址：

baishaojun@bjut.edu.cn

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