Flow forming and recrystallization behaviour of CuZn30 alloy
MUTLU Mehmet, KARAKAŞ Aptullah, KUŞDEMIR Hakan, KOLTAN Umut Kağan, YALÇINKAYA Tuncay
download PDFAbstract. CuZn30, which is also called cartridge brass, is an alloy used commonly in the production of large-calibre round cartridge cases. They are usually produced via cupping of a disc and consecutive deep drawing steps to decrease the wall thickness, with an annealing process in between each step to restore formability. In this study the manufacturing of cartridge brass (CuZn30) tubes is conducted through the flow forming process. In order to evaluate the flow forming behaviour, the preforms are manufactured by machining the CuZn30 billets, then the flow forming processes is applied. Thereafter, different temperature ranges (350, 450, and 550ºC for 1 h) are applied to flow formed samples in order to determine the proper recrystallization annealing temperature. The obtained microstructures and the mechanical properties are studied and revealed that the flow forming process is successfully realized, and the microstructure of the material is mapped with respect to the subsequent heat treatment temperature for recrystallization. Spherical and new grains are precisely generated after recrystallization annealing at 450 and 550ºC, but only partial recrystallization is obtained at 350ºC.
Keywords
Flow Forming of CuZn30, Recrystallization of CuZn30
Published online 4/19/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: MUTLU Mehmet, KARAKAŞ Aptullah, KUŞDEMIR Hakan, KOLTAN Umut Kağan, YALÇINKAYA Tuncay, Flow forming and recrystallization behaviour of CuZn30 alloy, Materials Research Proceedings, Vol. 28, pp 1021-1028, 2023
DOI: https://doi.org/10.21741/9781644902479-112
The article was published as article 112 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
References
[1] A. Doig, Military Metallurgy, 1998, pp. 23 – 29. https://doi.org/10.1201/9781003059400
[2] A. Karakaş, T. Ozan Fenercioğlu, T. Yalçinkaya, The influence of flow forming on the precipitation characteristics of Al2024 alloys, Mater. Lett. 299 (2021) 130066. https://doi.org/10.1016/j.matlet.2021.130066
[3] O. Bylya, T. Khismatullin, P. Blackwell, R. Vasin, The effect of elasto-plastic properties of materials on their formability by flow forming, J. Mater. Process. Technol. 252 (2018) 34-44. https://doi.org/10.1016/j.jmatprotec.2017.09.007
[4] E. El-Danaf, M. Soliman, A. Al-Mutlaq, Correlation of Grain Size, Stacking Fault Energy, and Texture in Cu-Al Alloys Deformed under Simulated Rolling Conditions, Adv. Mater. Sci. Eng. 2015 (2015) 1-12. https://doi.org/10.1155/2015/953130
[5] ASTM, B19-Standard Specification for Cartridge Brass Sheet, Strip, Plate, Bar, and Disks, Annual Book or ASTM Standards, American Society for Testing and Materials, Vol. 02.01
[6] ASTM, E3-11- Standard Guide for Preparation of Metallographic Specimens, Annual Book or ASTM Standards, American Society for Testing and Materials, Vol. 3.01
[7] ASTM, E384-17- Standard Test Method for Microindentation Hardness of Materials, Annual Book or ASTM Standards, American Society for Testing and Materials, Vol. 3.01
[8] ASTM, E8-13. Standard Test Methods of Tension Testing of Metallic Materials, Annual Book or ASTM Standards, American Society for Testing and Materials, Vol. 3.01
[9] G. Xiao, N. Tao, K. Lu, Microstructures and mechanical properties of a Cu–Zn alloy subjected to cryogenic dynamic plastic deformation, Mater. Sci. Eng. A 513-514 (2009) 13-21. https://doi.org/10.1016/j.msea.2009.01.022
[10] S. Cronje, R.E. Kroon, W.D. Roos, J.H. Neethling, Twinning in copper deformed at high strain rates, Bull. Mater. Sci. 36 (2013) 157–162. https://doi.org/10.1007/s12034-013-0445-4
