Changes in mechanical properties of as-cast magnesium alloy AZ91 after equal channel angular pressing

Roman Štěpánek, Libor Pantělejev

Abstract


This paper deals with differences in mechanical characteristics of AZ91 magnesium alloy in the as-cast state and after the subsequent equal channel angular pressing (ECAP) and with measurement of local microhardness. According to the obtained results, the tensile properties increased by a factor of two due to the ECAP procedure.  The proof stress, σ0.2, increased to 160 MPa and the ultimate tensile strength, σUTS, to 321 MPa. The local microhardness of ECAPed alloy varied between 70 and 91 HV 0.025 due to microstructural bimodality.

 


Keywords


AZ91; ECAP; mechanical properties

Full Text:

PDF

References


B.L. Mordike, T. Ebert: Mater. Sci. Eng. A302 (2001) 37–45.

A. Azushima, R. Kopp, A. Korhonen, D.Y. Yang, F. Micari, G.D. Lahoti, P. Groche, J. Yanagimoto, N. Tsuji, A. Rosochowski, A. Yanagina: CIRP Annals – Manufacturing Technology 57(2) (2008) 716–735.

A. Yamashita, Z. Horita, T.G. Langdon: Mater. Sci. Eng. A300 (2001) 142–147.

R.B. Figueiredo, T.G. Langdon: J. Mater. Sci. 45(17) (2010) 4827–4836.

Z. Zúberová, L. Kunz, T.T. Lamark, Y. Estrin, M. Janeček: Metall. Mater. Trans. A38(9) (2007) 1934–1940.

S.M. Masoudpanah, R. Mahmudi: Mater. Des. 31(7) (2010) 3512–3517.

S. Fintová, L. Kunz: J. Mech. Behav. Biomed. Mater. 42 (2015) 219–228.

S.H. Kang, Y.S. Lee, J.H. Lee: J. Mater. Process. Technol. 201(1-3) (2008) 436–440.

S. Fintová, L. Pantělejev, L. Kunz: Mater. Sci. Forum 782 (2014) 384–389.

R. Štěpánek, L. Pantělejev, O. Man: In METAL 2015, Brno, 3rd-5th Jun 2015 [online]. 2015 [cit. 28th October 2015] Available from: http://www.metal2015.com/files/proceedings/21/papers/3935.pdf.

M. Janeček, M. Popov, M.G. Krieger, R.J. Hellmig, Y. Estrin: Mater. Sci. Eng. A462 (2007) 116–120.

Z. Zhao, Q. Chen, H. Chao, C. Hu, S. Huang: Mater. Des. 32(2) (2011) 575–583.

B. Chen, D.L. Lin, L. Jin, X.Q. Zeng, C. Lu: Mater. Sci. Eng. A483–484 (2008) 113–116.


Refbacks

  • There are currently no refbacks.




Copyright (c) 2015 Roman Štěpánek, Libor Pantělejev

License URL: http://creativecommons.org/licenses/by-nc-nd/3.0/

................................

Articles published in the journal of Materials Engineering / Materialove inzinierstvo are indexed in Directory of Open Access Journals, Index Copernicus International, Google Scholar, Open J-GateBielefeld Academic Search Engine, Academic journal database, The Open Access Digital Library, ABC Chemistry - free chemical information, New jour, Academic Keys, Ulrich's Serials Solutions (a Proquest Business), EBSCO Academic Search, SHERPA/RoMEOGenamics JournalSeek, New York University Libraries, TrueserialsProQuest Database: ProQuest Engineering Journals, Cornell University Library,Scientific indexing services. You can find us on Facebook, Google Groups and Linked IN.