Dry Ice Blasting to Increase Fatigue Strength

Author:  J. Hoffmeister1, E. Schuch1, M. Siedler1 and T. Harter1 1 Esslingen University, Faculty of Mechanical and Systems Engineering, Kanalstr. 33, 73728 Esslingen, Germany
Source:  ICSP14 Milan
Doc ID:  2022068
Year of Publication:  2022
Abstract:  
Abstract Dry ice blasting is a blasting process that is usually used to clean components. The main advantage of this process is the residue-free evaporation of the abrasive, so that the blasting material is not decontaminated. Another characteristic of the process is the low intensity. However, [1, 2] have already shown that the surface condition of components can be changed by dry ice blasting. In this paper, therefore, dry ice will be used specifically to harden material specimens. Two materials are used: a soft aluminum alloy EN AW-5754 and a soft annealed tool steel 90MnCrV8. Subsequently, the surface condition in terms of roughness, residual stresses and strain hardening was investigated and the cyclic properties of the specimens were determined. Keywords: dry ice blasting, fatigue strength, residual stresses