Effect of Heat Treatment on Microstructure and Impact Toughness of Ti-6Al-4V Manufactured by Selective Laser Melting Process

• Autorzy: Lee K.-A. , Kim Y.-K. , Yu J.-H. , Park S.-H. , Kim M.-C.

Identyfikatory

DOI

10.1515/amm-2017-0205

• Języki publikacji: EN

Abstrakty

EN

This study manufactured Ti-6Al-4V alloy using one of the powder bed fusion 3D-printing processes, selective laser melting, and investigated the effect of heat treatment (650°C/3hrs) on microstructure and impact toughness of the material. Initial microstructural observation identified prior-β grain along the building direction before and after heat treatment. In addition, the material formed a fully martensite structure before heat treatment, and after heat treatment, α and β phase were formed simultaneously. Charpy impact tests were conducted. The average impact energy measured as 6.0 J before heat treatment, and after heat treatment, the average impact energy increased by approximately 20% to 7.3 J. Fracture surface observation after the impact test showed that both alloys had brittle characteristics on macro levels, but showed ductile fracture characteristics and dimples at micro levels.

Słowa kluczowe

EN

selective laser melting; Ti-6Al-4V; microstructure; impact toughness; heat treatment

• 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: 2017
• Tom: Vol. 62, iss. 2B
• Strony: 1341--1346
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Lee K.-A.

• Inha University, 100 Inha-Ro, Incheon, 22212, Korea

autor

Kim Y.-K.

• Inha University, 100 Inha-Ro, Incheon, 22212, Korea

autor

Yu J.-H.

• Korea Institute of Materials Science, Changwon-Si, Korea (Republic of)

autor

Park S.-H.

• Research Institute of Industrial Science & Technology, Pohang-Si, Korea (Republic of)

autor

Kim M.-C.

• Korea Atomic Energy Research Institute, Daejeon-Si, Korea (Republic of)

Bibliografia

• [1] H. Choi, J.M. Byun, W. Lee, S.R. Bang, Y.D. Kim, J. Korean Powder Metall. Inst. 23, 149 (2016).
• [2] C. Qiu, N.J.E. Adkins, M.M. Attallah, Mater. Sci. Eng. A 578, 230 (2013).
• [3] I. Gurrappa, Mater. Charact. 51, 131 (2003).
• [4] F.H. Froes, H. Friedrich, J. Kiese, D. Bergoint, JOM 56, 40 (2004).
• [5] L. Thijs, F. Verhaeghe, T. Craeghs, J.V. Humbeeck, J.P. Kruth, Acta Mater. 58, 3303 (2010).
• [6] H.K. Rafi, T.L. Starr, B.E. Stucker, Int. J. Adv. Manuf. Technol. 69, 1299 (2013).
• [7] B. Baufeld, O.V.D. Biest, R. Gault, Mater. Design 31, S106 (2010).
• [8] M. Simonelli, Y.Y. Tse, C. Tuck, Metall. Mater. Trans. A 45A, 2863 (2014).
• [9] C. Buirette, J. Huez, N. Gey, A. Vassel, E. Andrieu, Mater. Sci. Eng. A 618, 546 (2014).
• [10] D.G. Hernandez, MS Thesis, TECNICO LISBOA 2014.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)