快速估计激光粉末床熔合过程中熔合孔隙度不足的标度分析

IF 3.1 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science and Technology of Welding and Joining Pub Date : 2023-01-09 DOI:10.1080/13621718.2022.2164830

P. Zagade, B. Gautham, A. De, T. DebRoy

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引用次数: 3

摘要

在激光粉末床聚变（LPBF）中，由于相邻轨道和连续层的熔融不足而导致的熔融孔隙率不足是一个持续存在的问题。在尺寸分析之后，提出了一种新的函数关系，用于快速估计作为重要工艺变量和合金性能函数的未熔合孔隙率。发现孔隙率分数的估计值与五种常用合金在各种工艺条件下的LPBF的相应独立实验测量结果相当一致。所提出的函数关系被进一步用于构建一组过程图，该过程图可以帮助选择重要的LPBF条件，以避免车间缺乏熔合孔隙率，而无需进行任何计算。

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Scaling analysis for rapid estimation of lack of fusion porosity in laser powder bed fusion

Lack-of-fusion porosity due to insufficient melting of the adjacent tracks and successive layers is a persistent problem in laser powder bed fusion (LPBF). A novel functional relation is proposed here following dimensional analysis for rapid estimation of the lack-of-fusion porosity fraction as a function of important process variables and alloy properties. The estimated values of the porosity fractions are found to be in fair agreement with the corresponding independent experimentally measured results for LPBF of five commonly used alloys for a wide range of process conditions. The proposed functional relation is used further to construct a set of process maps that can aid in the selection of important LPBF conditions to avoid lack-of-fusion porosity on the shop floor without doing any calculations.

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来源期刊

Science and Technology of Welding and Joining 工程技术-材料科学：综合

CiteScore

6.10

自引率

12.10%

发文量

审稿时长

1.7 months

期刊介绍： Science and Technology of Welding and Joining is an international peer-reviewed journal covering both the basic science and applied technology of welding and joining. Its comprehensive scope encompasses all welding and joining techniques (brazing, soldering, mechanical joining, etc.) and aspects such as characterisation of heat sources, mathematical modelling of transport phenomena, weld pool solidification, phase transformations in weldments, microstructure-property relationships, welding processes, weld sensing, control and automation, neural network applications, and joining of advanced materials, including plastics and composites.