TY - JOUR
T1 - Development and validation of coupled erosion-corrosion model for wear resistant steels in environments with varying pH
AU - Laukkanen, Anssi
AU - Lindgren, Mari
AU - Andersson, Tom
AU - Pinomaa, Tatu
AU - Lindroos, Matti
N1 - Funding Information:
Jiliang Xia (Outotec) is acknowledged for performing the CFD modelling. We wish to acknowledge the invaluable discussions with Digby Macdonald, UC Berkeley, regarding the PDM and its implementation. This study has been carried out as part of the Finnish joint industrial consortium research action coordinated by DIMECC Ltd within the BSA Breakthrough Materials program in the O'DIGS project. We gratefully acknowledge the financial support of Business Finland (formerly Tekes), the participating companies, and VTT Technical Research Centre of Finland Ltd.
Funding Information:
Jiliang Xia (Outotec) is acknowledged for performing the CFD modelling. We wish to acknowledge the invaluable discussions with Digby Macdonald, UC Berkeley, regarding the PDM and its implementation. This study has been carried out as part of the Finnish joint industrial consortium research action coordinated by DIMECC Ltd within the BSA Breakthrough Materials program in the O’DIGS project. We gratefully acknowledge the financial support of Business Finland (formerly Tekes), the participating companies, and VTT Technical Research Centre of Finland Ltd.
Publisher Copyright:
© 2020 Elsevier Ltd
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/11
Y1 - 2020/11
N2 - Erosion-corrosion, the combined loss of material due to combined effects of particle erosion and electrochemical corrosion, has due to its complexity largely evaded modeling efforts. Assessment of the synergy between erosion and corrosion leading in extreme conditions to far greater material losses than for the mechanisms individually has proven elusive. Various analytical and semi-empirical approaches have been proposed with varying degree of success, but it has been a typical outcome that the predictive capabilities or transferability of such modeling efforts have been less than desirable. In current work this aspect is addressed and improvement is seeked by introducing a concept merging computational fluid dynamics (CFD) and the point defect model (PDM) to a micromechanical finite element (FE) formulated wear model. The implemented approach is utilized to study erosion-corrosion in a stirring tank configuration where flow velocity, abrasive particle type, solution chemistry, temperature and pH are varied. In order to investigate model performance experimental work supplemented by a detailed characterization regime is performed to produce a dataset for model validation for a wear resistant steel with two different abrasives, quartz and chromite particles. The respective experiments indicative of industrially relevant erosion-corrosion conditions are modelled and the Results are directly compared to model predictions. The erosion-corrosion model is found to produce satisfactory results in relation to the validation tests and predict the main trends of the experimental dataset appropriately. The capabilities and approximations underlying the introduced erosion-corrosion model are evaluated, discussed and future development needs identified.
AB - Erosion-corrosion, the combined loss of material due to combined effects of particle erosion and electrochemical corrosion, has due to its complexity largely evaded modeling efforts. Assessment of the synergy between erosion and corrosion leading in extreme conditions to far greater material losses than for the mechanisms individually has proven elusive. Various analytical and semi-empirical approaches have been proposed with varying degree of success, but it has been a typical outcome that the predictive capabilities or transferability of such modeling efforts have been less than desirable. In current work this aspect is addressed and improvement is seeked by introducing a concept merging computational fluid dynamics (CFD) and the point defect model (PDM) to a micromechanical finite element (FE) formulated wear model. The implemented approach is utilized to study erosion-corrosion in a stirring tank configuration where flow velocity, abrasive particle type, solution chemistry, temperature and pH are varied. In order to investigate model performance experimental work supplemented by a detailed characterization regime is performed to produce a dataset for model validation for a wear resistant steel with two different abrasives, quartz and chromite particles. The respective experiments indicative of industrially relevant erosion-corrosion conditions are modelled and the Results are directly compared to model predictions. The erosion-corrosion model is found to produce satisfactory results in relation to the validation tests and predict the main trends of the experimental dataset appropriately. The capabilities and approximations underlying the introduced erosion-corrosion model are evaluated, discussed and future development needs identified.
KW - Erosion-corrosion
KW - Wear resistant steels
KW - Micromechanical modeling
KW - Wear
UR - http://www.scopus.com/inward/record.url?scp=85087430685&partnerID=8YFLogxK
U2 - 10.1016/j.triboint.2020.106534
DO - 10.1016/j.triboint.2020.106534
M3 - Article
VL - 151
JO - Tribology International
JF - Tribology International
SN - 0301-679X
M1 - 106534
ER -