Christian Steinfelder, Dennis Rempel, Alexander Brosius
{"title":"Influence of the material properties on the clinching process and the resulting load-bearing capacity of the joint","authors":"Christian Steinfelder, Dennis Rempel, Alexander Brosius","doi":"10.1016/j.jajp.2024.100263","DOIUrl":null,"url":null,"abstract":"<div><div>This study focuses on the phenomenological change in material strength caused by a specific heat treatment and the subsequent analysis of the influence on the clinching process and the resulting joint properties. For this purpose, three series of tests were performed. In the first series of tests, the influence of heat treatment up to 340 °C on the mechanical properties of an age-hardenable AlMgSi alloy was investigated. Holding time and temperature were varied and the material strength was evaluated by tensile and hardness tests. Two strength-increasing and two strength-reducing heat treatment parameters were identified. In the second series of tests, selected heat treatment parameters were applied to a larger number of specimens and the joint strength was investigated by shear and head tensile tests. In the shear tensile test, mainly the properties of the punch-side material have an influence on the resulting joint strength. A change in strength of the die-side material can be neglected. In contrast, the properties of both sheets are important in the head tensile test. The strength of the joint will only increase if the strength of both sheets is increased. In general, a strength increasing heat treatment resulted in higher joint strength. In the third series of tests, the factor of punch displacement was considered, which was demonstrated to directly influence the formation of the clinched joint geometry.</div></div>","PeriodicalId":34313,"journal":{"name":"Journal of Advanced Joining Processes","volume":"10 ","pages":"Article 100263"},"PeriodicalIF":3.8000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Advanced Joining Processes","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666330924000797","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
This study focuses on the phenomenological change in material strength caused by a specific heat treatment and the subsequent analysis of the influence on the clinching process and the resulting joint properties. For this purpose, three series of tests were performed. In the first series of tests, the influence of heat treatment up to 340 °C on the mechanical properties of an age-hardenable AlMgSi alloy was investigated. Holding time and temperature were varied and the material strength was evaluated by tensile and hardness tests. Two strength-increasing and two strength-reducing heat treatment parameters were identified. In the second series of tests, selected heat treatment parameters were applied to a larger number of specimens and the joint strength was investigated by shear and head tensile tests. In the shear tensile test, mainly the properties of the punch-side material have an influence on the resulting joint strength. A change in strength of the die-side material can be neglected. In contrast, the properties of both sheets are important in the head tensile test. The strength of the joint will only increase if the strength of both sheets is increased. In general, a strength increasing heat treatment resulted in higher joint strength. In the third series of tests, the factor of punch displacement was considered, which was demonstrated to directly influence the formation of the clinched joint geometry.
本研究的重点是特定热处理对材料强度造成的现象变化,以及随后对夹紧过程和由此产生的接头性能的影响分析。为此,我们进行了三个系列的测试。在第一个系列试验中,研究了最高温度为 340 °C 的热处理对时效硬化铝镁硅合金机械性能的影响。改变了保温时间和温度,并通过拉伸和硬度测试评估了材料强度。确定了两个提高强度和两个降低强度的热处理参数。在第二系列试验中,对更多试样采用了选定的热处理参数,并通过剪切和头部拉伸试验研究了接头强度。在剪切拉伸试验中,主要是冲头侧材料的特性对接头强度产生影响。模具侧材料强度的变化可以忽略不计。相反,在封头拉伸试验中,两张板材的特性都很重要。只有同时提高两片板材的强度,接头的强度才会提高。一般来说,增加强度的热处理可提高接头强度。在第三系列试验中,考虑了冲头位移的因素,结果表明冲头位移直接影响咬合接头几何形状的形成。