Simulation and Experimental Study on Stress Relaxation Response of Polycrystalline γ-TiAl Alloy under Nanoindentation Based on Molecular Dynamics.

Junye Li, Chunyu Wang, Jianhe Liu, Xiwei Dong, Jinghe Zhao, Ying Chen

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Article in Micromachines, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 citing paper in PubMed.

Nanoscale Characterization of Nanomaterial-Based Systems: Mechanisms, Experimental Methods, and Challenges in Probing Corrosion, Mechanical, and Tribological Properties.Nanomaterials (Basel, Switzerland) · 2025
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Authors and funding

6 authors.

Junye LiMinistry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China.ORCID 0000-0002-4881-8616

Chunyu WangMinistry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China.

Jianhe LiuMinistry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China.

Xiwei DongMinistry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China.

Jinghe ZhaoSchool of Mechanical Engineering, Changchun Guanghua University, Changchun 130033, China.

Ying ChenJilin Province Product Quality Supervision and Inspection Institute, Jilin 130023, China.

Funding

Changchun Guanghua University Project Aeronautical nozzle flow Field Coupling Machining Technology and process HX2024011the Science and technology development plan project of Jilin province No. 20220201036GX

6 · The paper itself

Abstract

This study employed nano-indentation technology, molecular dynamics simulation, and experimental investigation to examine the stress relaxation behaviour of a polycrystalline γ-TiAl alloy. The simulation enabled the generation of a load-time curve, the visualisation of internal defect evolution, and the mapping of stress distribution across each grain during the stress relaxation stage. The findings indicate that the load remains stable following an initial decline, thereby elucidating the underlying mechanism of load change during stress relaxation. Furthermore, a nano-indentation test was conducted on the alloy, providing insight into the load variation and stress relaxation behaviour under different loading conditions. By comparing the simulation and experimental results, this study aims to guide the theoretical research and practical application of γ-TiAl alloys.

Indexed as

experimental studymolecular dynamics simulationnano-indentationpolycrystalline γ-TiAl alloystress relaxation

Identifiers

PMID39203671

DOI10.3390/mi15081020

PMCPMC11356573

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