Analysis of Tilted Columnar Dendrites at Grain Boundaries During Wire and Laser Additive Manufacturing: a Phase-Field Study

• Autorzy: Zong Nanfu , Sun Weizhao , Liang Xinghong , Jing Tao

Identyfikatory

DOI

10.24425/amm.2023.142424

• Języki publikacji: EN

Abstrakty

EN

Tilted columnar dendritic morphologies are usually existed in wire and laser additive manufactured parts of GH3039 alloy. Overgrowth behaviors induced by the tilted dendritic arrays with a large tilted angle, and the effect of the angle between the growth direction and the direction vertical locally to the solid substrate on primary spacing, solute concentration and morphological evolution have been investigated at both the converging and the diverging grain boundaries through the phase-field simulation. The formation of cracking depends on solidification behaviors including columnar dendrites growth and micro-segregation in the interdendritic region. Furthermore, the effect of the tilted columnar dendrites on the susceptibility of crack is investigated during wire and laser additive manufacturing.

Słowa kluczowe

EN

wire and laser additive manufacturing; tilted columnar dendrites; overgrowth behavior; phase field simulation; grain boundary

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2023
• Tom: Vol. 68, iss. 2
• Strony: 469--475
• Opis fizyczny: Bibliogr. 19 poz., fot., rys., tab., wzory

Twórcy

autor

Zong Nanfu

• Tsinghua University, Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, School of Materials Science and Engineering, Beijing 100084, China

• https://orcid.org/0000-0002-2352-1592

autor

Sun Weizhao

• Tsinghua University, Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, School of Materials Science and Engineering, Beijing 100084, China

• https://orcid.org/0000-0002-5711-0679

autor

Liang Xinghong

• Tsinghua University, Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, School of Materials Science and Engineering, Beijing 100084, China

• https://orcid.org/0000-0002-8125-7478

autor

Jing Tao

• Tsinghua University, Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, School of Materials Science and Engineering, Beijing 100084, China

• https://orcid.org/0000-0002-9634-7521

Bibliografia

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Uwagi

The present work is financially supported by The National Key Research and Development Program of China No. 2017YFB1103700.