Investigation of Influence Factors on Residual Stress Determination within Coated Surfaces in Consideration of the Differential and Integral Method
Investigation of Influence Factors on Residual Stress Determination within Coated Surfaces in Consideration of the Differential and Integral Method
复制标题
考虑微分积分法的涂层表面残余应力测定的影响因素研究
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Venancio Martínez García
中科院分区：
文献类型：
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作者：
P. Weidmann;U. Weber;S. Schmauder;Venancio Martínez García
为了改善金属结构的表面性能，如耐磨性和耐热性或硬度，通常采用热喷涂陶瓷涂层。实现致密层的现代技术是高速氧燃料（HVOF）技术。沉积工艺和必要的预处理会在涂层和基材内产生高残余应力。虽然脆性涂层中的拉伸应力可能导致裂纹，但压缩应力状态甚至可以改善材料的行为。为了保证高的产品质量，有必要准确地知道金属陶瓷混合系统中产生的残余应力。一种非常常见的测量技术是增量钻孔（IHD）方法。为了确定IHD测量的残余应力，可以使用微分法（DM）或积分法（IM）。为了研究界面层、非线性应力、裂纹、各向异性、涂层厚度变化和计算公式的影响，建立了几种有限元模型，并对涂层系统进行了敏感校正。
To improve the surface behavior of metal structures, like wear-and heat resistance or hardness, often thermally sprayed ceramic coatings are applied. A modern technology to realize dense layers is the High Velocity Oxygen Fuel (HVOF) technique. The deposition process and necessary pretreatments can cause high residual stresses within the coating and the substrate. While tensile stresses in the brittle coating may cause cracks, compressive stress states can even improve the materials behavior. To guarantee high product quality, it is necessary to know exactly the occurring residual stresses in the metal-ceramic hybrid system. A very common measurement technique is the incremental hole drilling (IHD) method. To determine the residual stresses out of IHD measurements the differential method (DM) or integral method (IM) can be used. To investigate the influence of interfacial layers, nonlinear stresses, cracking, anisotropy, variation of coating thickness and calculation formalisms several FEM models have been build, while case sensitive calibration was used for the coated systems.