Effect of nanoparticles on creep behaviour of metals: A review

High-temperature resistant material is becoming increasingly significant in numerous industrial applications, including aerospace and automotive use, to increase fuel efficiency and decrease CO2 emissions. Metals with nanoparticles to form metal matrix nano composite (MMNCs) are promising to enhance metals for structural/industrial applications at high temperatures. This review provides a comprehensive insight into the nanoparticle effect on the creep behavior of metals and alloys. Firstly, it discusses the different creep mechanisms that are activated in response to the creep strain according to the deformation parameters (temperature, load, and microstructure). The most significant creep mechanisms vary according to the grain shape accommodation mechanism required to facilitate the grain boundary sliding into accommodation by diffusion and accommodation by intragranular dislocation activity. Secondly, it reviews the threshold stress contribution in metal matrix composites as well as the load transfer phenomenon, which enhances creep resistance of metals with nanoparticles. Thirdly, the nanoparticles' influences on the creep behavior of metals, especially Al, Mg, Ti, Zn, and solder alloys, are reviewed in detail. Finally, a summary of this review and the future aspects associated with the behavior of metals with nanoparticles at high temperatures are provided.& COPY; 2023 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Automated summary

High-temperature resistant materials are increasingly important in various industries, such as aerospace and automotive, for improving fuel efficiency and reducing CO2 emissions. Metal matrix nanocomposites (MMNCs) formed by adding nanoparticles to metals show promise in enhancing the structural and industrial applications of metals at high temperatures. This review provides a comprehensive understanding of how nanoparticles affect the creep behavior of metals and alloys, including the activation of different creep mechanisms and the contributions of threshold stress and load transfer. It also focuses on the specific influences of nanoparticles on the creep behavior of metals like aluminum, magnesium, titanium, zinc, and solder alloys, and concludes with future prospects in this field.