A residual stresses numerical simulation and the relevant thermal-mechanical mapping relationship of Fe-based coatings

A residual stresses numerical simulation and the relevant thermal-mechanical mapping relationship of Fe-based coatings
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铁基涂层残余应力数值模拟及相关热力映射关系

DOI:
10.1016/j.rinp.2019.102195
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发表时间:
2019-06
期刊:
影响因子:
5.3
通讯作者:
Xu Binshi
Xu Binshi
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Tian Haoliang;Wang Changliang;Guo Mengqiu;Tang Zhihui;Tong Hui;Wang Xinkun;Wei Shicheng;Xu Binshi

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残余应力模型综合考虑了涂层沉积过程中残余应力的三个主要来源:淬火应力、热应力和相变引起的应力。以沉积层温度、涂层厚度、沉积层数和相关工件尺寸作为输入,该模型可以轻松计算出涂层中的最终残余应力分布。此外,通过涂层的实验和理论分析揭示了涂层沉积过程中的热机械行为。结果表明,在65.2~122.5℃范围内制备的涂层具有较低的残余应力,保证了较高的使用可靠性。
Residual stresses model comprehensively considers the three main sources of residual stress during the coating deposition process: quenching stress, thermal stress and phase transformation-induced stress. With the deposited layer temperature, coating thickness, number of deposited layers and relevant workpiece dimensions as the input, the model can easily calculate the final residual stress distribution in the coating. Moreover, the thermal–mechanical behavior during the coating deposition process was revealed through experimental and theoretical analysis of coatings. The results showed that the coating fabricated within the range of 65.2–122.5 °C have relatively low residual stresses, ensuring relatively high service reliability.
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