Effect of Heat Input on Microstructure and Microhardness in WAAM

Authors

  • Manahil Tongov Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, Bulgarian Academy of Sciences
  • Vladimir Petkov Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, Bulgarian Academy of Sciences
  • Plamen Tashev Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, Bulgarian Academy of Sciences

DOI:

https://doi.org/10.7546/CRABS.2024.09.09

Keywords:

wire and arc additive manufacturing, microstructure, microhardness

Abstract

Experiments were carried out for WAAM of samples using electric arc and additive material in the form of solid wire grade G3Si1. The layers were built-up with one transition each. Metallographic macro- and microsections were made from the obtained samples. The macro- sections are used to determine the locations of microhardness measurements. The microsections were used to measure the microhardness and to illustrate the microstructure. The analysis of the obtained results shows that the heat input and the interlayer temperature are of crucial importance for the obtained mechanical characteristics of the built-up samples. The microstructure of the obtained layers varies along the height of the built-up samples thus witnessing for the thermal treatment occurring in each layer except the last one as a result of applying the subsequent layers.

Author Biographies

Manahil Tongov, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, Bulgarian Academy of Sciences

Mailing Address:
Institute of Metal Science, Equipment and Technologies
with Hydro- and Aerodynamics Centre “Acad. A. Balevski”,
Bulgarian Academy of Sciences,
67 Shipchenski prohod Blvd, 1574 Sofia, Bulgaria

E-mail: tongov.tu@gmail.com

Vladimir Petkov, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, Bulgarian Academy of Sciences

Mailing Address:
Institute of Metal Science, Equipment and Technologies
with Hydro- and Aerodynamics Centre “Acad. A. Balevski”,
Bulgarian Academy of Sciences
67 Shipchenski prohod Blvd, 1574 Sofia, Bulgaria

E-mail: vladimir2pe@yahoo.com

Plamen Tashev, Institute of Metal Science, Equipment and Technologies with Hydro- and Aerodynamics Centre “Acad. A. Balevski”, Bulgarian Academy of Sciences

Mailing Address:
Institute of Metal Science, Equipment and Technologies
with Hydro- and Aerodynamics Centre “Acad. A. Balevski”,
Bulgarian Academy of Sciences
67 Shipchenski prohod Blvd, 1574 Sofia, Bulgaria

E-mail: ptashev@ims.bas.bg

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Published

30-09-2024

How to Cite

[1]
M. Tongov, V. Petkov, and P. Tashev, “Effect of Heat Input on Microstructure and Microhardness in WAAM”, C. R. Acad. Bulg. Sci., vol. 77, no. 9, pp. 1340–1346, Sep. 2024.

Issue

Section

Engineering Sciences