Influence of heat treatment on the suitability for clinching of the aluminium casting alloy AISi9

M. Neuser; M. Boehnke; O. GrydinM. BobbertM. SchaperG. Meschut

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Influence of heat treatment on the suitability for clinching of the aluminium casting alloy AISi9

机译：Influence of heat treatment on the suitability for clinching of the aluminium casting alloy AISi9

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In many manufacturing areas, multi-material designs are implemented in which individual components are joined together to form complex structures with numerous joints. For example, in the automotive sector, cast components are used at the junctions of the body and joined with different types of sheet metal and extruded profiles. To be able to join structures consisting of different materials, alternative joining technologies have emerged in recent years. This includes clinching, which allows assembling of two or more thin sheet metal and casting parts by solely cold forming the material. Clinching the brittle and usually less ductile cast aluminium alloys remains a challenge because the brittle character of the cast aluminium alloys can cause cracks during the forming of the clinched joint. In this study, the influence of the heat treatment time of an aluminium casting alloy AISi9 on the joinability in the clinching process is investigated. Specific heat treatment of the naturally hard AISi9 leads to a modification of the eutectic microstructure, which can increase ductility. Based on this, it will be examined if specific clinching die geometries can be used, which achieve an optimized geometrical formation of the clinched joint. The load-bearing capacities of the clinched joints are determined and compared by shear tensile and head tensile tests. Furthermore, the joints are examined microscopically to investigate the influence of the heat treatment on the failure behaviour during the load-bearing tests as well as crack initiation within the joining process.

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《Proceedings of the Institution of Mechanical Engineers, Part L. Journal of Materials: Design and Application》 |2022年第6期|1246-1257|共12页
作者
M. Neuser; M. Boehnke; O. GrydinM. BobbertM. SchaperG. Meschut;
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作者单位

Department of Materials Science, Paderborn University, Paderborn,Germany;

Laboratory for Material and Joining Technology, Paderborn University,Paderborn, Germany;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类
关键词
materials research; materials testing; aluminium; sand casting; clinching; heat treatment; joinability;

Influence of heat treatment on the suitability for clinching of the aluminium casting alloy AISi9

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