TEM investigation on microstructures of age-hardened 2014 Al alloy forged by cold biaxial alternate forging

• Autorzy: Shin Young-Chul , Ha Seong-Ho

Identyfikatory

DOI

10.24425/amm.2024.149772

• Języki publikacji: EN

Abstrakty

EN

In this study, microstructures of age-hardened 2014 Al alloy forged by cold biaxial alternate forging was investigated by transmission electron microscope. And also, the forming limits of age-hardened 2014 Al alloy were examined using both conventional compression test and biaxial alternate forging. As a result of compression test, it showed a perfect plastic behavior with no visible change in stress after 27% in strain and eventually, the curve fluctuated as a shear crack occurs after 51% strain. However, it was possible to impose very large strains on the 2014-T6 Al alloy workpieces through the biaxial alternate forging of up to 4 passes. The effective strain was possibly accumulated to 356% and 204% as the maximum and average values, respectively. The results of transmission electron microscope indicated that the high density dislocations were distributed after 3 passes. After 4 passes, the distribution of more increased dislocations was observed and band-shaped dislocation clustering appeared.

Słowa kluczowe

EN

biaxial alternate forging; severe plastic deformation; 2014 Al alloy; precipitation; transmission electron microscope

• 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: 2024
• Tom: Vol. 69, iss. 2
• Strony: 485--488
• Opis fizyczny: Bibliogr. 7 poz., fot., rys., tab.

Twórcy

autor

Shin Young-Chul

• Korea Institute of Industrial Technology (KITECH), Incheon 21999, Republic of Korea

• https://orcid.org/0000-0002-9527-9168

autor

Ha Seong-Ho

• Korea Institute of Industrial Technology (KITECH), Incheon 21999, Republic of Korea

• https://orcid.org/0000-0002-4718-8421

Bibliografia

• [1] Y.C. Shin, S.H. Ha, B.H. Kim, Y.O. Yoon, S.H. Lim, H.J. Choi, S.K. Kim, S.K. Hyun, J. Mater. Process. Technol. 286, 116822 (2020).
• [2] J.R. Davis, ASM International, Aluminum and Aluminum Alloys, Materials Park 1993.
• [3] M. Wang, L. Huang, W. Liu, Mater. Sci. Eng. A 674, 40 (2016).
• [4] I. Mazurina, T. Sakai, H. Miura, Mater. Sci. Eng. A 486, 662 (2008).
• [5] H. He, Y. Yi, S. Huang, Y. Zhang, Mater. Sci. Eng. A 712, 414 (2018).
• [6] G. Prakash, N.K. Singh, N.K. Gupta, Structures 26, 193 (2020).
• [7] S. Chen, F. Li, K. Chen, L. Huang, G. Peng, Mater. Charact. 167, 110510 (2020).

Uwagi

This study has been conducted with the support of the Ministry of Trade, Industry and Energy as “Materials/Parts Technology Development Program (20011420)”.