A comparative study of additively manufactured thin wall and block structure with Al-6.3% Cu alloy using cold metal transfer process

By B. Cong, Z. Qi, B. Qi, Hongye Sun, Gang Zhao, Jialuo Ding. 2017

178 citations recorded by the source corpus.

In order to build a better understanding of the relationship between depositing mode and porosity, microstructure, and properties in wire + arc additive manufacturing (WAAM) 2319-Al components, several Al-6.3%Cu deposits were produced by WAAM technique with cold metal transfer (CMT) variants, pulsed CMT (CMT-P) and advanced CMT (CMT-ADV). Thin walls and blocks were selected as the depositing paths to make WAAM samples. Porosity, microstructure and micro hardness of these WAAM samples were investigated. Compared with CMT-P and thin wall mode, CMT-ADV and block process can effectively reduce the pores in WAAM aluminum alloy. The microstructure varied with different depositing paths and CMT variants. The micro hardness value of thin wall samples was around 75 HV from the bottom to the middle, and gradually decreased toward the top. Meanwhile, the micro hardness value ranged around 72–77 HV, and varied periodically in block samples. The variation in micro hardness is consistent with standard microstructure characteristics.

Subfields: Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/5cecee6c30d9382d6f9b740c3bcade6eb8880052

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In Mechanical Engineering

1. Karan S. Derekar
2. Ahmet Taşdemir
3. Serkan Nohut
4. Z. Qi
5. Gang Zhao
6. Hongye Sun
7. B. Qi
8. B. Cong

Citations in the corpus

• A review of wire arc additive manufacturing and advances in wire arc additive manufacturing of aluminium (2018, background): “[65] reported the presence of lesser number of pores (refer Table 5) in a block structure compared to wall structure when deposited using CMT-P and CMT-ADV processes.”
• An overview of wire arc additive manufacturing (WAAM) in shipbuilding industry (2020, result): “Apart from thin walls, a similar study with blocks also showed that the arc mode CMTPADV results in lower porosity in WAAM of 2319-Al components produced by Al–6.3%Cu deposits (Cong et al. 2017).”
• Microstructure and mechanical properties of wire + arc additively manufactured 2024 aluminum alloy components: As-deposited and post heat-treated (2019, background): “[8] further found the depositing path and CMT arc mode can influence the porosity, microstructure and mechanical properties of WAAM 2219 aluminum alloys.”