摘要
对异种材料DP600镀锌双相钢板和1060工业纯铝进行了搅拌摩擦焊搭接试验(铝板在上,钢板在下).从接头横截面的金相形貌可以发现,在前进侧和返回侧,钢像两个钉子一样进入铝中.在微观上,钢和铝以河流状的形式充分地混合在一起.在焊核区和热力影响区,钢和铝之间形成了一层有一定宽度的由两种材料呈带状交错分布组成的过渡层.力学性能测试表明,过渡层的显微硬度较高,接头抗剪强度达到母材77%,形成了力学性能较好的焊缝.XRD物相分析发现在断面产生了金属间化合物Al13Fe4.
Lap joint friction stir welding of dissimilar materials between DP600 dual-phase zinc-coated steel and industrial pure aluminum 1060(the aluminum plate was on the top and the steel was under it)was researched in this paper.It can be found from microstructure morphology of the joint that the steel inserts the aluminum just like two nails in both the advancing side and return side.On the micro scale,the steel and aluminum fully mixed together like rivers.In the weld,nugget zone and heat affected zone,a layer of a certain width of the transition layer was formed by the two materials staggered together.Mechanical performance tests show that the hardness of transition layer is high,joint shear strength is about 77%of base metal,and the mechanical properties of the weld is good.Intermetallic compound Al13Fe4 is found on the fractured surface through XRD phase analysis.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2011年第12期97-100,118,共4页
Transactions of The China Welding Institution
关键词
搅拌摩擦焊
镀锌钢板
铝板
力学性能
金属间化合物
friction stir welding
aluminum plate
zinccoated steel
mechanical properties
intermetallic compound
