Metallurgical Abstracts on Light Metals and Alloys vol.56

Phenomena of tool adhesion at elevated temperature in V-groove friction test of AA7075

Tatsuya Funazuka*, Kuniaki Dohda**, Mizuki Kinoshita*** and Shiro Suzuki***
* Academic Assembly Faculty of Engineering, University of Toyama
** Department of Mechanical Engineering, Northwestern University
*** Graduate School of Science and Engineering for Research, University of Toyama

[Published in Material Forming: ESAFORM 2023, 28 (2023), pp.419-428]

https://doi.org/10.21741/9781644902479-46
E-mail: funazuka[at]eng.u-toyama.ac.jp
Key Words: Hot extrusion, 7075 Aluminum alloy, Tribology in Manufacturing

7000 series aluminum alloys are high-strength alloys used in various lightweight products in the transportation equipment and aerospace industries. AA7075 extrusions are expected to find further applications in multiple fields, including aircraft parts, automotive parts, and sporting goods. However, the high deformation resistance and surface cracking defects caused by tool galling and adhesion have resulted in extremely low productivity. In this study, the V-groove compression test was proposed as a method to determine the coefficient of friction in hot metal forming. Using AA7075 as the experimental material, what did the V-groove compression test at various temperatures to compare the results with calibration curves created from the numerical analysis and observe the growth of adhesion.