船用新型TA3钛板手持激光填丝焊接头组织与力学性能研究

丁正祥; 王彦龙; 曹旭武; 闫德俊; 陈红亮; 裴晓霖

doi:10.7512/j.issn.1001-2303.2024.12.04

船舶先进焊接制造技术 | 浏览量 : 0 下载量: 18 CSCD: 0

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船用新型TA3钛板手持激光填丝焊接头组织与力学性能研究
Study on the Microstructure and Mechanical Properties of New TA3 Titanium Plate Handheld Laser Wire Filling Welding Joint for Ships
2024年54卷第12期页码：21-27
纸质出版日期： 2024-12-25 ，
DOI： 10.7512/j.issn.1001-2303.2024.12.04
稿件说明：

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丁正祥，王彦龙，曹旭武，等.船用新型TA3钛板手持激光填丝焊接头组织与力学性能研究［J］.电焊机，2024，54（12）：21-27.

DING Zhengxiang, WANG Yanlong, CAO Xuwu, et al.Study on the Microstructure and Mechanical Properties of New TA3 Titanium Plate Handheld Laser Wire Filling Welding Joint for Ships[J].Electric Welding Machine, 2024, 54(12): 21-27.
丁正祥，王彦龙，曹旭武，等.船用新型TA3钛板手持激光填丝焊接头组织与力学性能研究［J］.电焊机，2024，54（12）：21-27. DOI： 10.7512/j.issn.1001-2303.2024.12.04.

DING Zhengxiang, WANG Yanlong, CAO Xuwu, et al.Study on the Microstructure and Mechanical Properties of New TA3 Titanium Plate Handheld Laser Wire Filling Welding Joint for Ships[J].Electric Welding Machine, 2024, 54(12): 21-27. DOI： 10.7512/j.issn.1001-2303.2024.12.04.

摘要

为了解决船用新型TA3钛质结构激光角焊缝接头的焊脚尺寸小、气孔控制难与未熔合等难题，提出了TA3钛质结构角焊缝接头的手持激光摆动焊接模式，系统优化了摆动特征、激光功率、焊接速度、离焦量等关键工艺参数，并对角焊缝接头的焊缝表面光泽、显微组织与力学性能进行了分析。结果表明：焊缝表面与热影响区呈现银白色，着色渗透检测无表面缺陷；宏观断面形貌显示成形良好，焊缝完全焊透，未发现焊接缺陷，可实现焊脚尺寸3 mm以上；接头各区域的金相组织晶粒度良好，且不存在显微裂纹、气孔与夹杂等缺陷；手持激光填丝角接缝焊件的T型弯曲性能和十字接头的抗拉剪切强度与TIG/MIG焊的相当，其疲劳性能略优，力学性能良好。通过研究手持激光填丝焊在TA3钛板角接缝的焊接工艺性，为船用新型TA3钛质结构的高效生产与质量保障提供了新型解决方案。

Abstract

In order to solve the problems of small weld foot size

difficulty in controlling porosity

and lack of fusion in the new type of TA3 titanium structure laser fillet weld joint for ships

a handheld laser swing welding mode for TA3 titanium structure fillet weld joint was proposed. The key process parameters such as swing characteristics

laser power

welding speed

and defocus amount were systematically optimized

and the surface gloss

microstructure

and mechanical properties of the fillet weld joint were analyzed. The results show that the surface of the weld and the heat affected zone appear silver white

and there are no surface defects in the dye penetration test; The macroscopic cross-sectional morphology shows good formation

complete penetration of the weld seam

and no welding defects were found

which can achieve a weld foot size of 3mm or more. The metallographic structure and grain size of each area of the joint are good

and there are no defects such as microcracks

porosity and inclusions. The T-shaped bending performance and tensile shear strength of the cross joint of the handheld laser filled wire corner seam welding component are comparable to those of TIG/MIG welding

with slightly better fatigue performance and good mechanical properties. By studying the welding process of handheld laser wire filling welding on the corner seam of TA3 titanium plate

a new solution is provided for the efficient production and quality assurance of new marine TA3 titanium structures.

关键词

船用新型TA3钛板手持激光填丝焊接头组织力学性能

Keywords

marine new TA3 titanium platehandheld laser wire filling weldingjoint organizationmechanical property

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