Dear Colleagues,

It is critical to understand the fundamental mechanisms during the metal machining process. Machining parameters, tool geometries, and metal microstructure all have significant effects on the dynamics of velocity, deformation, stress, and temperature in shear zone. The physics-based analysis and predictive model on shear straining, thermal kinematics, and material constitutive relation can help to comprehend the coupling effects between thermal and mechanical loadings and the related materials behavior evolutions. Metal microstructure changes in machining include recrystallization, grain growth, crystallization evolution, and phase transformation. The machining process is significantly influenced by the material microstructure as the tool cutting through grain boundaries. In return, microstructure of metal keeps changing during the machining process. Therefore, the microstructure changes and machining process are affected iteratively. It is necessary to understand this mechanism to better predict the machining process.

For this Special Issue in Metals, we welcome reviews and articles regarding modeling and applications of microstructure change and mechanism during the metal machining process.

Dr. Yixuan Feng
Dr. Man Zhao
Guest Editors

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• microstructure evolution
• machining process
• fundamental mechanisms
• recrystallization
• phase transformation