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采用原位X射线成像法研究超声辅助焊接技术在水下湿法焊接中的优势。

Investigating the Advantages of Ultrasonic-assisted Welding Technique Applied in Underwater Wet Welding by in-situ X-ray Imaging Method.

作者信息

Chen Hao, Guo Ning, Xu Kexin, Liu Cheng, Wang Guodong

机构信息

State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China.

Shandong Provincial Key Laboratory of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China.

出版信息

Materials (Basel). 2020 Mar 21;13(6):1442. doi: 10.3390/ma13061442.

DOI:10.3390/ma13061442
PMID:32245272
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7142934/
Abstract

In this study, the effects of ultrasonic on melt pool dynamic, microstructure, and properties of underwater wet flux-cored arc welding (FCAW) joints were investigated. Ultrasonic vibration enhanced melt flow and weld pool oscillation. Grain fragmentation caused by cavitation changed microstructure morphology and decreased microstructure size. The proportion of polygonal ferrite (PF) reduced or even disappeared. The width of grain boundary ferrite (GBF) decreased from 34 to 10 μm, and the hardness increased from 204 to 276 HV. The tensile strength of the joint increased from 545 to 610 MPa, and the impact toughness increased from 65 to 71 J/mm due to the microstructure refinement at the optimum ultrasonic power.

摘要

在本研究中，研究了超声波对水下湿法药芯焊丝电弧焊（FCAW）接头熔池动力学、微观结构和性能的影响。超声振动增强了熔体流动和熔池振荡。由空化引起的晶粒破碎改变了微观结构形态并减小了微观结构尺寸。多边形铁素体（PF）的比例降低甚至消失。晶界铁素体（GBF）的宽度从34μm减小到10μm，硬度从204HV增加到276HV。由于在最佳超声功率下微观结构细化，接头的抗拉强度从545MPa增加到610MPa，冲击韧性从65J/mm增加到71J/mm。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/2671a7965387/materials-13-01442-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/578bacce8833/materials-13-01442-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/61f79bdec77d/materials-13-01442-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/9d1c24180d68/materials-13-01442-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/e6a0ad053c4d/materials-13-01442-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/baac6c69110a/materials-13-01442-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/2671a7965387/materials-13-01442-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/783ad608f946/materials-13-01442-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/f311e4660f14/materials-13-01442-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/c59885c9add5/materials-13-01442-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/57ac502ba430/materials-13-01442-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/5cad446f6ede/materials-13-01442-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/ceca4eccc37b/materials-13-01442-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/857a5fac9e4a/materials-13-01442-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/578bacce8833/materials-13-01442-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/61f79bdec77d/materials-13-01442-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/9d1c24180d68/materials-13-01442-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/e6a0ad053c4d/materials-13-01442-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/f5199c41ff6c/materials-13-01442-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/baac6c69110a/materials-13-01442-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/75d3/7142934/2671a7965387/materials-13-01442-g014.jpg

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