Experimental study on welding residual stresses in ultra-high strength sheet with tensile and shear load - 文章详情页

作者：

Yu, Huiping (Yu, Huiping.) | Yang, Liu (Yang, Liu.) | Han, Changlu (Han, Changlu.) | Li, Xiaoyang (Li, Xiaoyang.)

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摘要：

After　spot　welding　residual　stress　was　superimposed　by　working　load,　the　internal　stress　will　redistribute.　This　work　selected　B1500HS　ultra　high　strength　steel　sheet　and　prepared　welded　components.　The　residual　stress　near　the　surface　of　nugget　zone,　the　heat　affected　zone　and　base　metal　was　measured　by　X-ray　diffraction.　Later,　after　tension　and　shear　load　was　applied,　the　residual　stress　of　the　spot　welding　component　was　investigated　from　the　aspect　including　electrode　diameter,　welding　current.　The　results　show　that　the　current　changes　have　an　impact　on　the　specimen　in　terms　of　welding　residual　stresses.　The　electrode　diameter　increases　so　that　the　residual　stress　increases　inside　the　weld　nugget　zone.　After　applying　shear　load,　residual　stress　has　been　released　in　the　weld　nugget　and　heat-affected　zone.　The　zone　away　from　the　nuggest　released　less.　©,　2015,　Harbin　Research　Institute　of　Welding.　All　right　reserved.

关键词：

Advanced high strength Steel Heat affected zone High strength steel Residual stresses Shear flow Spot welding Steel heat treatment Welded steel structures Welding electrodes

作者机构：

[ 1 ] [Yu, Huiping]College of Mechanical and Electronic Engineering, Beijing University of Technology, Beijing; 100124, China
[ 2 ] [Yang, Liu]College of Mechanical and Electronic Engineering, Beijing University of Technology, Beijing; 100124, China
[ 3 ] [Han, Changlu]College of Mechanical and Electronic Engineering, Beijing University of Technology, Beijing; 100124, China
[ 4 ] [Li, Xiaoyang]College of Mechanical and Electronic Engineering, Beijing University of Technology, Beijing; 100124, China

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