Transactions of Materials and Heat Treatment

Title：Surface plastic deformation regularity and microstructural evolution in ball milling of Q235 billet

Authors： REN Tao-lin1 XIE Bin-tao2 XU Wen-chen1 SHAN De-bin1 LV Yan1(1.School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China 2.Press Section Technology Department First Automotive Works Car Co. Ltd. Changchun 130012 China)

Unit：

KeyWords： ball milling surface plastic deformation fine grains coarse grains compound microstructures

ClassificationCode：TG301

year,vol(issue):pagenumber：2010,35(1):59-62

Abstract：

A new technique was presented,which was able to localize the plastic deformation on the surface of the billet and refine the surface grains after recrystallization annealing through the ball milling.FEM was employed to simulate the process on the surface of Q235 billet and obtain the strain regularity,which proved that the ball milling could realize the surface plastic deformation.The metallography after the ball milling and the recrystallization annealing were also observed.The results indicate that the ball milling will realize the surface plastic deformation and the compound microstructures that are fine grains on the surface and the coarse grains in the center after the recrystallization annealing are obtained.

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Reference：

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