Investigation of the fracture behavior of tungsten at the micro scale

摘要：

　　Tungsten promises great potential in very high temperature applications due to its very high melting point.Yet its brittleness,far above room temperature,limits its application.Investigations have already shown that fracture toughness of polycrystalline tungsten strongly depends on microstructural characteristics like grain size and shape,and texture.To gain a better insight into the basic mechanisms,fracture toughness experiments are carried out at the micro-scale.First experiments focus on the influence of the crystal orientation with respect to cracking.Here,we report on micro bending tests on free standing,notched,single crystal micro cantilevers.With respect to the 110<11  0> crack system,the beam axis was normal to the 110 crystal plane.

关键词： Tungsten fracture toughness crystal orientation micro bending experiments

作者: Nicola J. Schmitt Christoph Bohnert Christoph Eberl Ruth Schwaiger Sabine M. Weygand Oliver Kraft

作者单位: Institute for Applied Materials(IAM),Karlsruhe Institute of Technology(KIT),Hermann-von-Helmholtz-Pl Institute for Applied Materials(IAM),Karlsruhe Institute of Technology(KIT),Hermann-von-Helmholtz-Pl Institute for Applied Materials(IAM),Karlsruhe Institute of Technology(KIT),Hermann-von-Helmholtz-Pl Faculty of Mechanical Engineering and Mechatronics(MMT),Karlsruhe University of Applied Sciences,Mol Fraunhofer Institute for Mechanics of Materials(IWM),W(o)hlerstraβe 11,79108 Freiburg,Germany

会议类型: 国际会议

会议名称: 第13届国际断裂大会(ICF2013)

会议地点: 北京

会议语种:英文

页码: 1-8

在线出版日期: 2013-06-16（万方平台首次上网日期，不代表论文的发表时间）