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VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 16b
SUMMARY:The influence of shot-peening parameters on structural and mechanical characteristics of AISI 9310 VAR steel for aircraft parts
DESCRIPTION:Shot peening is a very efficient treatment in order to increase fatigue resistance and prolong the life of metal components, while reducing tensile stresses induced by machining and heat treatment processes. The objective of the experimental research presented in the paper is to optimize the technology of mechanical treatment through shot-peening of aircraft parts made of 9310 VAR steel, in order to improve the efficiency of the process and obtain products of increased quality. The influence of the following industrial treatment parameters on the microstructural and mechanical characteristics of the samples was studied: the size of the shot balls, the working pressure and the exposure time. Steel metal balls with different diameters were used: d1 = 0.3 mm (ASR 110, 45-52 HRC) and d2 = 0.6 mm (ASR 230, 45-52 HRC). Also, two values were used for the working pressure (compressed air pressure): p1 = 3 bar and p2 = 5 bar. The exposure time of the samples to the shot-peening treatment varied between 5 - 35 minutes, as follows: t1 = 5 min, t2 = 15 min, t3 = 25 min and t4 = 35 min. The samples resulting from the laboratory experimentation of the designed technology were subjected to an advanced structural and mechanical characterization through XRD analysis, optical microscopy, SEM electron microscopy, microhardness tests and static tensile tests. The tensile strength (σUTS), the yield strength (σ0.2) and the elongation at break (εf) were measured. The results are interpreted and will be used for the fine adjustment of the working parameters and finally for establishing the optimal technological variant of mechanical surface treatment by shot-peening.
CLASS:PUBLIC
DTSTART:20230614T143000
DTEND:20230614T145000
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