文献类型：期刊文献

中文题名：不同离焦量对真空激光焊接TA2工业钛板的影响

英文题名：Influence of Different Amount of Defocus on Vacuum Laser Welding TA2 Industrial Titanium Plate

作者：巴一[1];师文庆[1];韩善果[2];黄进钰[1];黄江[1];谢玉萍[1];何宽芳[3]

机构：[1]广东海洋大学电子与信息工程学院,广东湛江524088;[2]广东省科学院中乌焊接研究所,广东广州510650;[3]佛山科学技术学院机电工程与自动化学院,广东佛山528225

年份：2021

卷号：41

期号：3

起止页码：481

中文期刊名：应用激光

外文期刊名：Applied Laser

收录：CSTPCD、、CSCD2021_2022、Scopus、北大核心、CSCD、北大核心2020

基金：国家自然科学基金项目(62073089);广东省普通高校重点领域专项(2020ZDZX2061);广东省科学院项目(2019GDASYL-0501011;2018GDASCX-0803);广州经济技术开发区科技项目(2019GH19)。

语种：中文

中文关键词：真空激光焊接;TA2工业钛;正离焦量;焊缝熔宽;金相组织;力学性能

外文关键词：vacuum laser welding;TA2 titanium industry;plus defocusing amount;weld width;metallographic structure;mechanical property

中文摘要：为了研究真空激光焊接TA2工业钛板时正离焦量对焊缝成形质量、显微组织和力学性能的影响,采用真空舱和大功率碟片激光器,在4.0×10-1 Pa的真空度下进行不同离焦量的焊接。结果表明:正离焦量可有效完成板材的焊接。在真空环境中,随着离焦量的增加,焊缝表面的成形质量提升,焊缝熔宽增加。离焦量的增加会导致光斑能量分散,因此当离焦量达到+4 mm时,焊缝熔宽达到最大值,随后开始呈下降趋势。在不同的正离焦量下,焊缝与热影响区晶粒的尺寸、形式均不同,随着离焦量的增加,晶粒尺寸逐渐降低。0 mm离焦时,焊缝显微硬度提升1~2倍,在+4 mm和+8 mm的离焦量下,焊缝显微硬度无明显变化。使用8 mm的离焦量焊接时,焊缝的拉伸力和抗拉强度达到最大值,分别为57759 N和292 N/mm。通过对正离焦量下真空焊接TA2工业钛板的研究,得出结论:使用+4~+8 mm的离焦量真空焊接TA2工业钛板,可得到综合性能较好的焊缝。这对其在船舶制造领域的应用具有重要的意义。

外文摘要：In order to study the effect of the amount of direct defocus on the weld quality、microstructure and mechanical property of TA2 industrial titanium plate welded by vacuum laser. A vacuum chamber and a high-power disc laser are used to weld with different defocus at a vacuum degree of 4.0×10-1 Pa. The results show that: the amount of positive defocus can effectively complete the welding of plate. In the vacuum environment, with the increase of defocus, the forming quality of the weld surface is improved and the weld width is increased. However, the increase of defocus will lead to the dispersion of spot energy. Therefore, when the defocus reaches +4 mm, the weld width reaches the maximum and then begins to decline. The grain size and form of the weld and heat-affected zone are different under different defocusing amount, and the grain size decreases with the increase of defocusing amount. Through the research on the effect of positive defocus on vacuum welding of TA2 industrial titanium plate. When the defocus is 0 mm, the microhardness of the weld is increased 1-2 times. When the defocus is +4 mm and +8 mm, the microhardness of the weld has no obvious change. The tensile force and tensile strength of the weld reached the maximum value of 57 759 N and 292 N/mm, respectively, when the defocus amount of +8 mm was used. The conclusion is drawn: using vacuum welding of TA2 industrial titanium plate with +4 mm to +8 mm defocus can get better comprehensive performance of weld seam. This is of great significance to its application in the field of shipbuilding.