Integrated Material Modelling for Abrasion Resistant Steels

  Multi-scale abrasion analysis from the biggest to the tiniest scale Copyright: IEHK Multi-scale abrasion analysis from the biggest to the tiniest scale. Each of them acquires information from the other level’s models and thus leads to optimal and robust microstructure.

Abrasion is a commonly occurring wear mechanism in agricultural and construction equipment. Such applications are prone to combined impact and abrasion in the presence of particles. This might result in dual occurrence or overlap in wear mechanisms.

Since the current development of abrasion analysis is based on the relative hardness between the abraded material and the abrasive particles, the effects of failure mechanisms as well as microstructure are overlooked.

This project aims to develop a methodological approach for a multi-scale description of abrasion resistance, therefore enabling a knowledge-based design rule for better abrasive resistant materials with computational modelling approaches.

The abrasion resistant steels are selected to develop these models in different scales. The macro-mechanical model is developed under an assumption that micro-cutting and micro-ploughing are dominant wear mechanisms. Therefore, the renowned Modified-Bai-Wierzbicki material model shall be applied for them. Additionally, the micro-mechanical model enhances our current representative-volume-element (RVE) model which is able to predict the behaviour of the multi-phase ferrite-pearlite steel flawlessly. Our ongoing development is concerning multi-level tessellation for martensitic microstructure. An extensive study on design of experiment and response surface modelling shall be done on this closed-loop multi-scale simulation model so that an optimal and robust microstructure design is achieved.

This project is supported by Research Fund for Coal and Steel (RFCS), European Commission.