Mechanical characterization of as-cast AA7075/6060 and CuSn6/Cu99.5 compounds using an experimental and numerical push-out test

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The present paper describes an experimental method and innovative numerical approach in the mechanical testing of rotationally symmetric, as-cast bilayer compounds using a push-out test. Specimens consisting of AA7075/6060 and CuSn6/Cu99.5 were fabricated by static and semi-continuous compound casting, respectively. Optical and mechanical testing methods showed a cohesive bonding character and a negligibly small transition zone between the joining partners. The shear strength was investigated by using an experimental push-out test. The experiments were reviewed by means of a finite element analysis. Therefore, Johnson-Cock failure parameters were determined for each casting material. Subsequently, a multi-sectional numerical model was built up to simulate the mechanical behavior of an as-cast bimetal sample during push-out testing. Lastly, a numerical parameter study yielded a strong dependency between optimized loads at the interface and the ratio of die clearance and sample thickness as well as the interface position.

Original languageEnglish
JournalMaterials Science and Engineering
Volume751
Pages (from-to)214-225
Number of pages12
ISSN0921-5093
DOIs
Publication statusPublished - 28.03.2019

    Research areas

  • Engineering
  • Bimetal testing, Cohesion, Compound casting, Hybride finite element simulation, Johnson-Cook, Push-out test