High-Strength Al-Based Bulk Alloy Produced by Spark Plasma Sintering of Gas Atomized Powders
Main Article Content
Abstract
In this work, consolidation of gas atomized Al84Gd6Ni7Co3 glassy powders into highly dense bulk specimens was carried out by spark plasma sintering. The highest relative density and hardness value can be obtained for sample sintered at 613 K are about 99.7 % and 495 HV, respectively. Room temperature compression tests of the consolidated bulk material reveal remarkable mechanical properties, namely, high compression strength of 1020 MPa with maximum elongation of 3.2 %, but without plastic deformation. The failure morphology of the sintered sample surface presented a transparticle fracture mechanism, indicating the efficiency of the sintering processing.
Keywords
bulk amorphous alloys, spark plasma sintering, Al-based alloys
Article Details
References
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[3] A. Inoue, Y. Horie, T. Masumoto; New Amorphous Al-Ni-Fe and Al-Ni-Co Alloys; Materials Transactions, JIM 34(1) (1993) 85–88.
[4] L.-C. Zhuo, S.-J. Pang, H. Wang, T. Zhang; Ductile Bulk Aluminum-Based Alloy with Good Glass-Forming Ability and High Strength; Chinese Physics Letters 26(6) (2009) 066402.
[5] T.T. Sasaki, K. Hono, J. Vierke, M. Wollgarten, J. Banhart; Bulk nanocrystalline Al85Ni10La5 alloy fabricated by spark plasma sintering of atomized amorphous powders; Materials Science and Engineering: A 490(1) (2008) 343–350.
[6] J. Basu, S. Ranganathan; Crystallisation in Al–ETM–LTM–La metallic glasses; Intermetallics 12(10) (2004) 1045–1050.
[7] Z. Wang, R.T. Qu, S. Scudino, B.A. Sun, K.G. Prashanth, D.V. Louzguine-Luzgin, M.W. Chen, Z.F. Zhang, J. Eckert; Hybrid nanostructured aluminum alloy with super-high strength; Npg Asia Materials 7 (2015) e229.
[8] C. Suryanarayana, A. Inoue; Bulk Metallic Glasses; 2nd Edition ed., CRC Press, 2011.
[9] Á. Révész, L.K. Varga, S. Suriñach, M.D. Baró; Thermal stability, crystallization kinetics, and grain growth in an amorphous Al85Ce5Ni8Co2 alloy; Journal of Materials Research 17(8) (2011) 2140–2146.
[10] J.C. Kim, H.J. Ryu, J.S. Kim, B.K. Kim, Y.J. Kim, H.J. Kim; Synthesis and densification of Cu added Fe-based BMG composite powders by gas atomization and electrical explosion of wire; Journal of Alloys and Compounds 483(1) (2009) 28–31.
[11] T. Gheiratmand, H.R. Madaah Hosseini, P. Davami, C. Sarafidis; Fabrication of FINEMET bulk alloy from amorphous powders by spark plasma sintering; Powder Technology 289 (2016) 163–168.
[12] S.P. Harimkar, T. Borkar, A. Singh; Spark plasma sintering of amorphous-crystalline laminated composites; Materials Science and Engineering: A 528(3) (2011) 1901–1905.
[13] Z. Wang, K.G. Prashanth, S. Scudino, J. He, W.W. Zhang, Y.Y. Li, M. Stoica, G. Vaughan, D.J. Sordelet, J. Eckert; Effect of ball milling on structure and thermal stability of Al84Gd6Ni7Co3 glassy powders; Intermetallics 46 (2014) 97–102.
[14] J. Eckert, M. Calin, P. Yu, L.C. Zhang, S. Scudino, C. Duhamel; Al-Based Alloys Containing Amorphous and Nanostructured Phases; Reviews on Advanced Materials Science 18 (2018) 169–172.
[15] Y.-H. Kim, A. Inoue, T. Masumoto; Increase in Mechanical Strength of Al-Y-Ni Amorphous Alloys by Dispersion of Nanoscale fcc-Al Particles; Materials Transactions, JIM 32(4) (1991) 331–338.
[16] H.N. Viet, T.N. Oanh, J.-S. Kim, M.A. Jorge; Crystallization Kinetics and Consolidation of Al82La10Fe4Ni4 Glassy Alloy Powder by Spark Plasma Sintering; Metals 8(10) (2018) 812.