Brazilian disc experiments on a cold spray material

18th APS-SCCM; 24th AIRAPT

Braithwaite, C.H.^1 ; Aydelotte, B.^2 ; Jardine, A.P.^1

SMF Fracture and Shock Physics Group, Cavendish Laboratory, Cambridge, United Kingdom^1

Georgia Institute of Technology, School of Materials Science and Engineering, 771 Ferst Drive, Atlanta

GA

30332-0245, United States^2

关键词: Cold spray;    Cold-sprayed;    Digital image correlation technique;    Force-extension;    Microstructural elements;    Reactive metals;    Strain-rate-dependent;    Tensile behaviour;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/500/12/122002/pdf
DOI  :  10.1088/1742-6596/500/12/122002

来源: IOP

【 摘 要 】

A series of experiments were performed to probe the tensile behaviour of a cold sprayed reactive metal composite material containing a mixture of nickel and aluminium. Data were acquired at two different strain rates and were collected using high speed photography, strain gauges, force-extension measurements and were analysed using digital image correlation techniques. Comparisons were made with modelling on representative microstructural elements in the CTH code, supporting the conclusion that the material failed in shear rather than tension, in a manner dictated by the microstructure. Fairly high sample to sample variation was observed as well as minimal evidence of strain rate dependent behaviour.