Joining aluminium alloys with reduced ductility by mechanical clinching
Joining aluminium alloys with reduced ductility by mechanical clinching
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DOI：
10.1007/s00170-014-6556-2
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发表时间：
2015-03-01
影响因子：
3.4
通讯作者：
Paoletti, A.
中科院分区：
文献类型：
--
作者：
Lambiase, F.;Di Ilio, A.;Paoletti, A.
分析了机械连接塑性降低的铝合金板材的可焊性。为了降低塑性应变的局部化程度和大小，提出了一种改进的刀具组几何结构。为了提高材料的成形性，采用了板材预热。利用光学显微镜和扫描电子显微镜观察紧固连接中可能存在的裂纹并进行尺寸分析。进行了包括显微硬度试验和单搭接剪切试验在内的力学性能试验，以评价工艺条件对接头强度的影响。
The joinability of aluminium alloy sheets with reduced ductility produced by mechanical clinching is analyzed. A modified tool set geometry was developed to reduce the localization and magnitude of plastic strain. Sheets preheating was adopted to increase the material formability. Optical microscopy and scanning electron microscopy were utilized to observe possible presence of cracks in clinched connections and to perform dimensional analysis. Mechanical characterization tests comprising micro-hardness test and single lap shear tests were conducted to evaluate the influence of the processing conditions on joints strength.