Methods and application of residual stress analysis on thermally sprayed coatings and layer composites
Methods and application of residual stress analysis on thermally sprayed coatings and layer composites
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DOI：
10.1016/j.surfcoat.2006.04.040
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发表时间：
2006-10
影响因子：
5.4
通讯作者：
M. Wenzelburger;D. Lopez;R. Gadow
中科院分区：
文献类型：
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作者：
M. Wenzelburger;D. Lopez;R. Gadow
涂层和层复合制造通常涉及不同复合材料之间的高温梯度和密集的传热。这不仅适用于热喷涂，也适用于其他涂层技术。温度梯度与不同热物性材料的结合导致复合材料中形成热应力，这些热应力是由涂层凝固、相变或再结晶过程中的应力产生效应叠加而成的。残余应力的最终状态影响涂层的结构性能和功能性能，也影响构件在使用过程中的可靠性。因此，残余应力分析是优化涂层和层复合材料制造工艺的重要工具，以确保工艺的稳定性、涂层的附着力和相容性，并最终确保各种技术系统中部件的可靠性。描述和比较了最常用的残余应力测量技术，重点介绍了增量孔钻铣法。讨论了这些方法在工业机械零件上的应用的优缺点。根据具体的测量原理，给出了不同方法的典型应用领域。详细介绍了增量钻孔法，并给出了应用实例，说明了该方法在工业层复合材料制造中通过最适当的传热传质管理来优化热喷涂工艺的适用性。
Coating and layer composite manufacturing most commonly involves high temperature gradients and intensive heat transfer between the different composite materials. This can be noticed not only for thermal spraying, but also for other coating techniques. The combination of temperature gradients and materials with different thermophysical properties leads to the formation of thermal stresses in the composite, which are superimposed by stress generating effects during coating solidification, phase transformation or recrystallization. The final state of residual stresses affects the structural and functional properties of the coating as well as the component reliability during operation. Therefore, residual stress analysis is an important tool for the optimization of coatings and layer composite manufacturing processes in order to ensure stability of the processes, adhesion and compatibility of the coating, and finally, the reliability of the components in various technical systems. The most common residual stress measurement techniques are described and compared, with the focus on the incremental hole drilling and milling method. The advantages and disadvantages of the methods are discussed with respect to their application on industrial machine parts. The typical application fields for the different methods are given with respect to the specific measurement principles. The incremental hole drilling method is presented in more detail with application examples that illustrate the suitability of this method for the optimization of thermal spraying processes in industrial layer composite manufacturing by managing the heat and mass transfer in a most appropriate way.