Abstract

One of the features of direct laser metal deposition (DLMD) method is presence of high residual stress in produced parts. The information about residual stress distribution is critically important for the competent organization of production processes in additive manufacturing. To study residual stress distribution in large thin-walled parts produced by DLMD, two model samples were manufactured. Small thickness of the samples allowed using the calculation technique that does not require measurement of the lattice parameter of stress-free sample. It is shown that stress distribution in thin-walled plate built on a rigid substrate considerably differs from distribution in plate built on a flexible substrate.

中文翻译：

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用DLMD方法研究刚性衬底上金属板残余应力的中子衍射研究。

摘要

直接激光金属沉积（DLMD）方法的特征之一是在生产的零件中存在高残留应力。有关残余应力分布的信息对于增材制造中生产过程的主管组织至关重要。为了研究DLMD生产的大型薄壁零件中的残余应力分布，制造了两个模型样本。使用不需要测量无应力样品的晶格参数的计算技术，可以使样品厚度小。结果表明，在刚性基板上构建的薄壁板中的应力分布与在柔性基板上构建的板中的应力分布明显不同。