异种钢焊接接头高温时效碳迁移的有限差分计算

The Finite Difference Calculation of Carbon Migration in Disimiar Metal Weldments

摘要: 异种钢焊接接头碳迁移规律的解析解已被很多学者所研究,由于其假定条件的理想化,使得解析解与实际结果相差较大。本文试图采用有限差分法寻求碳迁移的数值解,并利用扩散通量和扩散驱动力活度的知识处理了网络的内边界问题,讨论了有限差分方程的稳定性、收敛性以及对边界条件的稳定性。计算结果表明,用有限差分法进行异种钢接头界面碳迁移状态辨识与试验结果碳分布的趋势较为接近。
- 异种钢接头 /
- 碳迁移 /
- 有限差分法 /
- 计算
Abstract: The analytic solution of carbon migration in dissimilar metal weldments(DMWs) had been researched by many researchers,because of the idealization of assumed conditions,it caused bigger difference between the analytic and testing result.In this paper,numerical solution of carbon diffusion was solved and the finite difference method was used,inner boundary conditions of the meshes were treated using diffusional flux and carbon's activity,the stability and the convergence equation were dissussed.The system of identification indicated that the numerical results were accordant to the experimental results.
- DMWs /
- carbon migration /
- finite difference method /
- calculatin

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