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

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


download PDF

Abstract. 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.

Hot Extrusion, 7075 Aluminum Alloy, Tribology in Manufacturing

Published online 4/19/2023, 10 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: FUNAZUKA Tatsuya, DOHDA Kuniaki, KINOSHITA Mizuki, SUZUKI Shiro, Phenomena of tool adhesion at elevated temperature in V-groove friction test of AA7075, Materials Research Proceedings, Vol. 28, pp 419-428, 2023


The article was published as article 46 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.

[1] W.Z. Misiolek, Metalworking: Bulk-forming, In: ASM Handbook, 10th edn. S.L. Semiatin, Ed. Almere (the Netherlands), ASM International, 2005, pp. 522-527.
[2] P.K. Saha, Aluminum Extrusion Technology, Almere (the Netherlands), ASM International, 2000.
[3] S. Ngernbamrung, T. Funazuka, N. Takatsuji, S. Murakami, K. Dohda, Tearing mechanism of high-strength 7000 series aluminum alloy in hot extrusion, J. Jpn. Inst. Light. Met. 68 (2018) 660-666.
[4] T. Funazuka, K. Dohda, N. Takatsuji, C. Hu, N. Sukunthakan, Effect of die coating on surface crack depth of hot extruded 7075 aluminum alloy, Friction (2022) 1-13.
[5] J. Jerina, M. Kalin, Initiation and evolution of the aluminium-alloy transfer on hot-work tool steel at temperatures from 20C to 500C, Wear 319 (2014) 234-244.
[6] J. Jerina, M. Kalin, Aluminium-alloy transfer to a CrN coating and a hot-work tool steel at room and elevated temperatures, Wear 340 (2015) 82-89.
[7] M. Kalin, J. Jerina, The effect of temperature and sliding distance on coated (CrN, TiAlN) and uncoated nitrided hot-work tool steels against an aluminum alloy, Wear 330 (2015) 371-379.
[8] E. Vidal-Sallé, M. Dubar, J.C. Boyer, L. Dubar, Fem numerical simulation of the warm and hot upsetting sliding test, Int. J. Mater. Form. 3 (2010) 315-318.
[9] A. Dubois, M. Dubar, L. Dubar, Warm and hot upsetting sliding test: Tribology of metal processes at high temperature, Procedia Eng. 81 (2014) 1964-1969.
[10] A. Dubois, M. Dubar, C. Debras, K. Hermange, C. Nivot, C. Courtois, New environmentally friendly coatings for hot forging tools, Surf. Coat. Technol. 344 (2018) 342-352.
[11] Q. Zhang, E. Felder, S. Bruschi, Evaluation of friction condition in cold forging by using T-shape compression test, J. Mater. Process. Technol. 209 (2009) 5720-5729.
[12] F. Fereshteh-Saniee, H. Badnava, S.M. Pezeshki-Najafabadi, Application of T-shape friction test for AZ31 and AZ80 magnesium alloys at elevated temperatures, Mater. Des. 32 (2011) 3221-3230.
[13]  T. Funazuka, N. Takatsuji, T. Tsuchiya, S. Oda, Pick-up defect mechanism in hot extrusion of Al-Mg-Si series alloy, J. Jpn. Inst. Light. Met. 70 (2020) 415-421.
[14] H. Watanabe, On the Al-Side Phase Diagram of the Quarternary System Al-Zn-Mg-Cu, J. Jpn. Inst. Light. Met. 23 (1959) 596-600.