气隙条件下Ti6Al4V合金薄板点调制plbw的形貌、力学性能和熔池动态

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

Science and Technology of Welding and Joining Pub Date : 2023-06-25 DOI:10.1080/13621718.2023.2227810

Jicheng Chen, Bin-Bin Kong, Qi Wang, Zhemin Qi, Yanhong Wei

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引用次数: 0

摘要

薄金属片的拼接常出现气隙装配误差。本文提出了一种结合脉冲激光功率和调制光斑尺寸的改进激光焊接方案，并将其应用于具有预定气隙范围的1.5 mm厚Ti6Al4V薄板上。随着气隙的增大，拉伸性能呈非线性下降，但焊接珠的连续性和均匀性较高。在焊接过程中，由于熔体积累和周期性的锁孔穿透，形成过间隙金属桥，并且随着气隙的增大，以双边金属桥为主的间隙桥接能力会减弱。该评价可为焊缝外观和性能的工艺优化提供依据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Morphology, mechanical property, and molten pool dynamics in spot modulated-PLBW of Ti6Al4V alloy sheets with air gap condition

The tailor joining of thin metal sheets frequently suffers from the assembly error of air gap. Herein, an improved laser welding scheme, integrating the pulsed laser power and the modulated beam spot size is developed and applied on 1.5 mm-thick Ti6Al4V sheets with a predetermined air gap range. Weld beads of high continuity and homogeneity are obtained while the tensile property has a nonlinear decrease when increasing the air gap. During the welding, the over-gap metal bridge is obtained due to melt accumulation and periodical keyhole penetration, and the gap bridging capacity, mainly featuring bilateral metal bridges can be weakened as the air gap increases. This evaluation would provide a basis for processing optimization regarding seam appearance and property.

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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.