Enhanced mechanical properties and deformation mechanisms in DED Inconel 625 via printing path switching

In this work, the effects of printing path switching (0° and 90°) at high linear energy density on the grain structure transition and mechanical properties of directed energy deposition-arc (DED-Arc) Inconel 625 alloys were explored. Microstructural analysis on the DED-Arc 625 with near-equiaxed grains under tensile loading revealed that the deformation initially occurs through planar dislocation glide, followed by the formation of dislocation walls and ‘locking-clamping' structures, which contribute to strain hardening. The interlayer interfaces did not induce adverse effects on mechanical performance. Additionally, the near-equiaxed grain structure maintained superior mechanical properties at elevated temperatures up to 700 °C.

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Publication Details

Journal
Materials Research Letters
Published
2025-03-11
DOI
https://doi.org/10.1080/21663831.2025.2476174
Citations
4
Primary Topic
Additive Manufacturing Materials and Processes
Type
article
Field-Weighted Citation Impact
2.85

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article

Enhanced mechanical properties and deformation mechanisms in DED Inconel 625 via printing path switching

Yaonan Cheng, João P. Oliveira, Jiajia Shen, Y. Zhang et al.
4 citations
Materials Research Letters
Additive Manufacturing Materials and Processes
2.85
article

Enhanced mechanical properties and deformation mechanisms in DED Inconel 625 via printing path switching

Yaonan Cheng, João P. Oliveira, Jiajia Shen, Y. Zhang, Kehuan Wang, J.Y. Li, Dong Wang, Yonghao Zhao, Siyu Yuan
article en
4 citations

Abstract

In this work, the effects of printing path switching (0° and 90°) at high linear energy density on the grain structure transition and mechanical properties of directed energy deposition-arc (DED-Arc) Inconel 625 alloys were explored. Microstructural analysis on the DED-Arc 625 with near-equiaxed grains under tensile loading revealed that the deformation initially occurs through planar dislocation glide, followed by the formation of dislocation walls and ‘locking-clamping' structures, which contribute to strain hardening. The interlayer interfaces did not induce adverse effects on mechanical performance. Additionally, the near-equiaxed grain structure maintained superior mechanical properties at elevated temperatures up to 700 °C.

Materials Research LettersVol. 13(5)
Hohai University (CN), Nanjing University of Science and Technology (CN), Enigma Diagnostics (United Kingdom) (GB), Universidade Nova de Lisboa (PT)
National Natural Science Foundation of China, China Scholarship Council, Natural Science Foundation of Jiangsu Province, Six Talent Peaks Project in Jiangsu Province, Fundação para a Ciência e a Tecnologia, Fundamental Research Funds for the Central Universities
Affordable and clean energy
Openalex Percentile: Top 11%
Additive Manufacturing Materials and Processes
2.85
DOIOpen Access PDFOpenAlex
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