Identification of Local Microplasticity on Ti6Al4V After Impingement of Periodically Acting Water Clusters

0545238 - ÚFM 2023 RIV CH eng C - Conference Paper (international conference)
Poloprudský, Jakub - Chlupová, Alice - Kruml, Tomáš - Hloch, Sergej
Identification of Local Microplasticity on Ti6Al4V After Impingement of Periodically Acting Water Clusters.
ADVANCES IN MANUFACTURING ENGINEERING AND MATERIALS II, ICMEM 2020. Cham: Springer, 2021 - (Hloch, S.; Pude, F.; Chattopadhyaya, S.; Klichova, D.; Krolczyk, G.), s. 63-74. Lecture Notes in Mechanical Engineering. ISBN 978-3-030-71956-2. ISSN 2195-4356. E-ISSN 2195-4364.
[ICMEM 2020 - International Conference on Manufacturing Engineering and Materials. Nový Smokovec (SK), 21.06.2021-25.06.2021]
R&D Projects: GA ČR(CZ) GA19-00408S
Institutional support: RVO:68081723 ; RVO:68145535
Keywords : Pulsating water jet * Ti6Al4V alloy * Early erosion stage * Initial damage * Erosion * Water clusters * Microplasticity
OECD category: Mechanical engineering; Mechanical engineering (UGN-S)

Effect of the pulsating water jet on the plastic deformations of surface
of Ti6Al4V was examined. Existing research papers investigating the interaction
of Ti6Al4V with pulsating water and water impact are focused on culmination
erosion stage of the impacted area. In this article, the initial stages of erosion were
studied in term of the increasing but relatively low number of impingement on
the microplastic deformation. The number of impacts varied from 1050 to 63000
impacts. The PWJ was positioned at the standoff distance of 5.5 mm above material
surface. The aim of this research was to study the influence of early erosion
stage, consisting of plastic deformation and material removal in preferential sites,
on the material structure. The determination of early erosion stages can be used
for selecting the conditions of PWJ leading to the surface strengthening, analogical
to shot peening. Sites with significance to the surface strengthening were
observed and discussed. Interphase boundaries and other structural characteristic
play significant role in the earliest stages of erosion.
Permanent Link: http://hdl.handle.net/11104/0322628