Microstructure and mechanical properties of 1 mm thin plate TC4 titanium alloy joint by ring laser welding

Author:

Liang Jianhui,Liu ZhanqiORCID,Li Xiang,Wang Haijiang,Yin Guili

Abstract

Abstract Ring laser welding was used to weld 1 mm thin plates TC4 titanium alloy, and the effects of different ring laser powers on the microstructure and mechanical properties of the weld were studied. The results indicate that the microstructure in the weld zone under different powers all contain basket structures, although the morphology of the martensite within the baskets differs. The microstructure in the weld zone is mainly composed of acicular α′ martensite, secondary α phase, and residual β phase. The microstructure in the heat-affected zone of the weld is mainly composed of acicular α′ martensite, initial α phase, secondary α phase, and residual β phase. The hardness of the weld is higher than that of the base metal, showing an overall trend of first increasing, then decreasing, and then increasing again before decreasing. The tensile specimens under different powers all fractured in the heat-affected zone of the weld, and the type of fracture is quasi-cleavage. At a laser power of 900 W, the weld has good formation, with minimal spatter on the surface, and good weld penetration. The microstructure of the weld is mainly composed of acicular α′ martensite, initial α phase, secondary α phase, and residual β phase. The hardness of the weld is 387.76 HV. The tensile strength and elongation are 1098.3 MPa and 12%, respectively.

Funder

Basic Scientific Research Project of Liaoning Provincial Department of Education

Doctoral Start-up Foundation of Liaoning Province

Publisher

IOP Publishing

Reference26 articles.

1. Research progress in laser welding technology of TC4 titanium alloy;Wei;Electric Welding Machine,2023

2. Research status and prospect of laser welding of titanium alloy;Liu;Materials Reports,2023

3. Narrow-gap laser welding with beam wobbling and filler wire and microstructural performance of joints of thick TC4 titanium alloy plates;Long;Opt. Laser Technol.,2022

4. Beam oscillation, porosity formation and fatigue properties of electron beam welded Ti-6Al-4V alloy;Kar;J. Mater. Process. Technol.,2019

5. Current research and development status of dissimilar materials laser welding of titanium and its alloys;Quazi;Opt. Laser Technol.,2020

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3