Abstract In this paper, we analyze microstructures of alloy 625 coatings deposited by three different methods in the context of their elastic properties. Dominant microstructural features of coatings produced by air plasma spraying, wire arc spraying and cold spraying technologies are identified. Effective elastic properties are given in terms of the proper microstructural parameters. The major microstructural parameters affecting overall Young's moduli of air plasma and wire arc sprayed alloy 625 coatings are crack density and concentration of chromium oxide platelets formed during the deposition process; while the major parameter for cold sprayed coating is dislocation density at the grain boundaries. Predictions of the effective Young's modulus in the plane normal to the deposition direction, made on the basis of the microstructural analysis, were tested against experimental measurements. It is demonstrated that the developed framework can be directly linked to microstructural data obtained from the analysis of photomicrographs.

中文翻译：

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. 空气等离子喷涂、电弧喷涂和冷喷涂技术沉积的 625 合金涂层的比较微机械分析

摘要 在本文中，我们分析了通过三种不同方法沉积的 625 合金涂层的微观结构，结合其弹性性能。确定了由空气等离子喷涂、电弧喷涂和冷喷涂技术生产的涂层的主要微观结构特征。有效的弹性特性是根据适当的微观结构参数给出的。影响空气等离子和线弧喷涂 625 合金涂层整体杨氏模量的主要显微结构参数是沉积过程中形成的氧化铬片晶的裂纹密度和浓度；而冷喷涂涂层的主要参数是晶界位错密度。垂直于沉积方向的平面中有效杨氏模量的预测，在微观结构分析的基础上进行的，并根据实验测量进行了测试。结果表明，开发的框架可以直接与从显微照片分析中获得的微观结构数据相关联。