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논문 기본 정보

자료유형
학술저널
저자정보
Xiping Yang (Jiangsu University) Yonghong Fu (Jiangsu University) Xin Kuang (Jiangsu University)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.10
발행연도
2021.10
수록면
4,225 - 4,234 (10page)
DOI
10.1007/s12540-020-00938-9

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In this paper, Cr12 steel was taken as the research object, and laser micro melting model was established in comsol softwarebased on physical equations such as laser heat source, convection heat transfer, evaporation mobility, recoil pressure,Marangoni effect. The forming mechanism and evolution law of concave?convex microtexture morphology were studiedby numerical simulation. The research reveals the changing process of the velocity of the flow field inside the material duringthe surface deformation. In addition, it can be found from the temperature field changes under different power that thehigher the power is, the faster the surface temperature of Cr12 material increases in the process of thermal deformation. Andthe hardness of the microtexture was greatly improved after the material experienced sudden heat and cold in a very shorttime. By comparing the numerical simulation results and the experimental results, it can be found that with the increase ofpower, the height, depth and diameter of the concave?convex microtexture morphology all show an increasing trend, andthe surface geometry obtained through numerical simulation matches well with the experimental results. It indicates thatthe numerical simulation has high feasibility and can effectively reflect the forming process and morphology of concaveconvexmicrotexture.

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