Effect of solution treatment on porosity, tensile properties and fatigue resistance of Al–Cu alloy fabricated by wire arc additive manufacturing

Jiale Miao; Jiqiang Chen; Xing Ting; Wei Hu; Jieke Ren; Tao Li; Lingpeng Zeng; Renguo Guan; Olanrewaju A. Ojo

Journal of Materials Research and Technology (Jan 2024)

Effect of solution treatment on porosity, tensile properties and fatigue resistance of Al–Cu alloy fabricated by wire arc additive manufacturing

Jiale Miao,
Jiqiang Chen,
Xing Ting,
Wei Hu,
Jieke Ren,
Tao Li,
Lingpeng Zeng,
Renguo Guan,
Olanrewaju A. Ojo

Affiliations

Jiale Miao: School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
Jiqiang Chen: School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China; Ningbo Boway Alloy Material Co., Ltd, Ningbo, 315135, China; Corresponding author. School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, China.
Xing Ting: School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
Wei Hu: School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
Jieke Ren: State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, Zijin Mining Group Co., Ltd, Xiamen, 361000, China
Tao Li: School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
Lingpeng Zeng: School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
Renguo Guan: School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China; Engineering Research Center of Continuous Extrusion, Ministry of Education, Dalian Jiaotong University, Dalian, 116028, China; Corresponding author. School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China.
Olanrewaju A. Ojo: School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China; Department of Mechanical Engineering, University of Manitoba, Winnipeg, R3T5V6, Canada; Corresponding author. School of Material Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China.

Journal volume & issue: Vol. 28
pp. 1864 – 1874

Abstract

Read online

This work studied the effect of solution heat treatment on the microstructure and properties of the Al–Cu alloy fabricated by wire arc additive manufacturing (WAAM), and focused on the influence of porosity and second phase evolution on the tensile properties and fatigue resistance of the alloy. The results show that with solution heat treatment at 530 °C for 1h, Al–Cu alloy fabricated by WAAM with low porosity (2.4 %) and high peak hardness (148.2 HV) can be obtained. Higher solution temperatures significantly increased the porosity, and extending the solution time caused the problems of increased porosity, micropore growth, microcracks as well as cavity. Influence of porosity on fatigue resistance is more significant than that on tensile properties. The results of tensile tests suggest that the effect of porosity on the strength of T6-treated alloy is limited and much smaller than that of the precipitation strengthening induced by precipitates, while the results of the fatigue crack propagation tests imply that porosity plays the dominant role in the fatigue crack propagation behaviors of the T6-treated alloy.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

About the journal

Abstract

Keywords