arXiv AI By Yazhuo Liu, Kunqing Ding, Xiaoguo Gong, Zifeng Wang, Yichen Yang, Yifeng Che, Wen Chen, Josh Kacher, Olivier Pierron, Shigenobu Ogata, Ting Zhu

Mechanistic discovery in grain boundary structure and deformation driven by agentic AI

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The paper introduces GBClaw, an agentic AI framework that integrates large language models with systematic simulations to study the structure and deformation of general grain boundaries (GBs) in nickel. By applying GBClaw to 14 asymmetric tilt GBs, the authors identified both primary and previously unobserved secondary GB misfit dislocations, revealing their significant impact on shear strength and sliding resistance. The study demonstrates how agentic AI, guided by domain expertise, can bridge high‑throughput screening and deep mechanistic insight at complex material interfaces.

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