Effect of rotation speed on temperature field and axial shortening of inertia friction welded GH4169 joints by numerical simulation

Effect of rotation speed on temperature field and axial shortening of inertia friction welded GH4169 joints by numerical simulation
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数值模拟转速对惯性摩擦焊接GH4169接头温度场和轴向缩短的影响

DOI:
10.1007/s12204-011-1143-2
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发表时间:
2011-06
影响因子:
--
通讯作者:
Li JL
Li JL
中科院分区:
--
文献类型:
--
作者:
Chen L;Li WY;Li JL

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基于ABAQUS软件建立了GH4169镍基高温合金惯性摩擦焊的二维有限元模型。采用网格重划分和映射求解技术解决了网格变形问题。研究了旋转速度对接头温度场和轴向缩短量的影响。结果表明,界面温度在1 s内迅速升高到900°C以上。然后,它缓慢地增加到一个准稳定值。当界面形成均匀的温度场,塑化材料从界面挤出形成明显的飞边时,轴向缩短量开始迅速增大。飞轮的转速控制着焊接过程,对焊接接头的温度变化和轴向缩短量有重要影响。
A 2D finite element model was established for inertia friction welding of GH4169 nickel-base superalloy based on the ABAQUS environment. The remeshing and map solution techniques were adopted to solve the problem of element distortion. The effect of rotation speed on the temperature field and axial shortening of joints was investigated. The results show that the interface temperature increases rapidly to higher than 900°C within 1 s. And then, it increases slowly to a quasi-stable value. The axial shortening begins to augment quickly when a uniform interface temperature field has formed and the plasticized material is extruded from the interface to form an obvious flash. The rotation speed of the flywheel controls the welding process and has a significant influence on the temperature evolution and axial shortening of joints.
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