Investigation of the Mesoscale Damage Evolution Process of AA5754O Aluminum Alloy CMT Welded Joints

Kang, Wenyuan; Chen, Qiuren; Huang, Li; Zhang, Jingyi; Hou, Zehong; Wang, Xianhui; Han, Weijian; Wang, Erlie

doi:10.3390/met13030555

Open AccessFeature PaperArticle

Investigation of the Mesoscale Damage Evolution Process of AA5754O Aluminum Alloy CMT Welded Joints

by

Wenyuan Kang

^1,2,

Qiuren Chen

^2,3,*,

Li Huang

^2,3,

Jingyi Zhang

²,

Zehong Hou

²,

Xianhui Wang

^1,*,

Weijian Han

² and

Erlie Wang

¹

School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

²

Material Big Data Platform, Advanced Materials Research Institute, Yangtze Delta, Suzhou 215100, China

³

Key Laboratory for Light-Weight Materials, Nanjing Tech University, Nanjing 210009, China

^*

Authors to whom correspondence should be addressed.

Metals 2023, 13(3), 555; https://doi.org/10.3390/met13030555

Submission received: 13 December 2022 / Revised: 27 January 2023 / Accepted: 27 January 2023 / Published: 9 March 2023

(This article belongs to the Special Issue Microstructure Evolution in Welded Joints)

Download

Browse Figures

Review Reports Versions Notes

Abstract

The microstructure and tensile failure evolution of AA5754O aluminum alloy CMT joints were investigated in this study. First, the microstructure and properties of aluminum alloy were observed using a hardness test and metallographic test. The microstructure and tensile failure evolution of AA5754O aluminum alloy CMT joints were studied using in situ CT tests. The defects in the heat-affected zone were mainly composed of pores with large sphericity. The softening failure was mainly due to the decrease in the effective bearing area due to the increase in the number of defects. There were a large number of shrinkage pores with sphericity less than 0.6 in the fusion zone defects. The softening failure was mainly due to the continuous growth and combination of shrinkage pores, which led to a decrease in the effective bearing area. Meanwhile, the variation process of the mean radii of the meso-defects in the heat-affected zone and fusion zone were analyzed. The material constants α_RT and α_RTm were 1.87 and 6.20 in the heat-affected zone and 7.21 and 5.31 in the fusion zone, respectively, which were found using the Rich and Tracey model and the improved Rich and Tracey model.

Keywords: cold metal transfer welding; in situ tensile experiment; microstructure; damage evolution

Share and Cite

MDPI and ACS Style

Kang, W.; Chen, Q.; Huang, L.; Zhang, J.; Hou, Z.; Wang, X.; Han, W.; Wang, E. Investigation of the Mesoscale Damage Evolution Process of AA5754O Aluminum Alloy CMT Welded Joints. Metals 2023, 13, 555. https://doi.org/10.3390/met13030555

AMA Style

Kang W, Chen Q, Huang L, Zhang J, Hou Z, Wang X, Han W, Wang E. Investigation of the Mesoscale Damage Evolution Process of AA5754O Aluminum Alloy CMT Welded Joints. Metals. 2023; 13(3):555. https://doi.org/10.3390/met13030555

Chicago/Turabian Style

Kang, Wenyuan, Qiuren Chen, Li Huang, Jingyi Zhang, Zehong Hou, Xianhui Wang, Weijian Han, and Erlie Wang. 2023. "Investigation of the Mesoscale Damage Evolution Process of AA5754O Aluminum Alloy CMT Welded Joints" Metals 13, no. 3: 555. https://doi.org/10.3390/met13030555

APA Style

Kang, W., Chen, Q., Huang, L., Zhang, J., Hou, Z., Wang, X., Han, W., & Wang, E. (2023). Investigation of the Mesoscale Damage Evolution Process of AA5754O Aluminum Alloy CMT Welded Joints. Metals, 13(3), 555. https://doi.org/10.3390/met13030555

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Menu

Investigation of the Mesoscale Damage Evolution Process of AA5754O Aluminum Alloy CMT Welded Joints

Abstract

Share and Cite

Article Metrics

Article Access Statistics

Further Information

Guidelines

MDPI Initiatives

Follow MDPI