Scaling of the fracture toughness of freestanding metallic thin films with the yield strength

Eva I. Preiß; Florentina Gannott; Mathias Göken; Benoit Merle

doi:10.1080/21663831.2018.1520749

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Scaling of the fracture toughness of freestanding metallic thin films with the yield strength

Original Report | 更新时间：2026-08-19

- Scaling of the fracture toughness of freestanding metallic thin films with the yield strength
- Materials Research Letters Vol. 6, Issue 10, Pages: 607-612(2018)
- 作者机构：
  
  1. Materials Science & Engineering Institute I Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
  2. Technology Development and Service Unit for Nanostructuring Max-Planck-Institute for the Science of Light
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2018.1520749
  CLC：
- Online First：18 September 2018，
  
  Published：2018
- 稿件说明：
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Eva I. Preiß, Florentina Gannott, Mathias Göken, et al. Scaling of the fracture toughness of freestanding metallic thin films with the yield strength[J]. Materials Research Letters, 2018, 6(10): 607-612.
DOI：

Eva I. Preiß, Florentina Gannott, Mathias Göken, et al. Scaling of the fracture toughness of freestanding metallic thin films with the yield strength[J]. Materials Research Letters, 2018, 6(10): 607-612. DOI： 10.1080/21663831.2018.1520749.

摘要

Abstract

BSTRACTThe influence of the yield strength on the fracture toughness of freestanding metallic films with a thickness of ∼150 nm was investigated by bulge testing. For this purpose

gold films prepared by thermal evaporation were tested at room temperature and at 100°C. Additionally

different Au-Ag solid-solution strengthened films were studied. The fracture toughness of the films is observed to increase with increasing yield stress. This is at first sight counterintuitive but can be explained by previously observed severe necking leading to a chisel-point type of fracture in freestanding metallic thin films.

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