PSI - Issue 82

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2026) 000–000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2026) 000–000

www.elsevier.com/locate/procedia www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 82 (2026) 91–97

© 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID organizers Abstract Cast irons are the material of choice in cylinder heads and cylinder blocks of heavy-duty diesel engines with their operating temperatures in the range of 400 °C to 500 °C. Exposure to high thermal and mechanical loads and long term operation at high temperatures make these products susceptible to creep-related failure mechanisms, resulting in performance degradation and premature failure. The focus of this paper is to demonstrate a methodology for development of micromechanical models for cast iron, incorporating a creep mechanism. Results are presented for a representative volume element. The effect of stress concentration on the material’s creep response is highlighted along with the plans for further improvements in the micromechanical models. The methodology and approach developed in this research is applicable to cast irons as well as other heterogeneous materials such as metal matrix composites. © 2026 The Authors. Copy from the contract: Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID organizers Keywords: Creep; Cast iron; Compacted graphite iron; CGI; High temperature; Numerical simulation; RVE; FEA 1. Introduction The term cast iron represents a family of iron-carbon alloys that has been used in a wide range of applications over hundreds of years (Stefanescu, 2019, 2017). Cast iron include 2.5-5 % carbon in form of graphite particles embedded in a ferrous matrix that could be pearlitic or ferritic. In addition to chemical composition, section size and heat Abstract Cast irons are the material of choice in cylinder heads and cylinder blocks of heavy-duty diesel engines with their operating temperatures in the range of 400 °C to 500 °C. Exposure to high thermal and mechanical loads and long term operation at high temperatures make these products susceptible to creep-related failure mechanisms, resulting in performance degradation and premature failure. The focus of this paper is to demonstrate a methodology for development of micromechanical models for cast iron, incorporating a creep mechanism. Results are presented for a representative volume element. The effect of stress concentration on the material’s creep response is highlighted along with the plans for further improvements in the micromechanical models. The methodology and approach developed in this research is applicable to cast irons as well as other heterogeneous materials such as metal matrix composites. © 2026 The Authors. Copy from the contract: Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID organizers Keywords: Creep; Cast iron; Compacted graphite iron; CGI; High temperature; Numerical simulation; RVE; FEA 1. Introduction The term cast iron represents a family of iron-carbon alloys that has been used in a wide range of applications over hundreds of years (Stefanescu, 2019, 2017). Cast iron include 2.5-5 % carbon in form of graphite particles embedded in a ferrous matrix that could be pearlitic or ferritic. In addition to chemical composition, section size and heat 8th International Conference on Structural Integrity and Durability (ICSID2025) High-temperature creep in compacted graphite iron: Numerical study of microstructural effect Abhijit Joshi a , Konstantinos P. Baxevanakis a , Vadim V. Silberschmidt a, * a Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK 8th International Conference on Structural Integrity and Durability (ICSID2025) High-temperature creep in compacted graphite iron: Numerical study of microstructural effect Abhijit Joshi a , Konstantinos P. Baxevanakis a , Vadim V. Silberschmidt a, * a Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK

* Corresponding author. E-mail address: V.Silberschmidt@lboro.ac.uk * Corresponding author. E-mail address: V.Silberschmidt@lboro.ac.uk

2452-3216 © 2026 The Authors. Copy from the contract: Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID organizers 2452-3216 © 2026 The Authors. Copy from the contract: Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID organizers

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of ICSID organizers 10.1016/j.prostr.2026.04.015