Static and fatigue performance of weld bonded dual phase steel sheets
Static and fatigue performance of weld bonded dual phase steel sheets
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DOI：
10.1179/136217110x12665778348461
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发表时间：
2010-04-01
影响因子：
3.3
通讯作者：
Shome, M.
中科院分区：
文献类型：
--
作者：
Sam, S.;Shome, M.
采用单组分环氧树脂结构胶，通过胶接、点焊和焊接工艺制备了1.0mm厚双相钢板的搭接接头。通过拉伸、剪切和疲劳试验对接头的力学性能进行了评价。在不同的焊接参数（电流、时间）下，对点焊和焊接接头的熔核尺寸进行了测量和比较。对于相同的焊接参数，焊结的熔核具有较高的熔核直径。焊接接头的拉伸剪切强度分别比点焊接头高40%和58%，比胶粘剂接头高15%和39%。考虑到10（6）次循环，焊接接头的疲劳极限远高于点焊接头，但小于胶接接头。总体而言，焊接接头的性能上级电阻点焊。
Lap joints of dual phase steel sheets of 1.0 mm were prepared by adhesive bonding, spot welding and weld bonding processes using a one component epoxy base structural adhesive. Mechanical properties of the joints were evaluated by tensile shear and fatigue tests. The size of the weld nugget for both spot weld and weld bond was measured for different welding parameters (current, time) and compared. For identical welding parameters, weld bonded nuggets exhibit higher nugget diameter. Tensile shear strength of weld bonded joints is 40 and 58% higher than spot welded joints and 15 and 39% higher than adhesive bonded joints and for DP590 and DP780 steels respectively. Considering 10(6) cycles, the endurance limit of weld bonded joint is much higher than spot welded joint but smaller than adhesive bonded joints. Overall the performance of weld bonded joints is superior to those of resistance spot welding.