A new multi-component alloy with a nanostructured morphology and superior mechanical behavior

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:771

Article

Fan, J. T.^1,2  Zhang, M. D.¹  Zhang, L. J.¹  Fu, L. M.²  Yu, P. F.¹  Liaw, P. K.³  Li, G.^1,3 

[1] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

[3] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

关键词: Multi-component alloy;    Coherent nanoparticles;    Mechanical properties;    Dynamic slip band refinement;   

DOI  :  10.1016/j.msea.2019.138616

来源: Elsevier

【 摘 要 】

Here, we develop a Al13Fe36Co24Ni24C3 nanostructured alloy prepared via the arc-melting method. The newly-developed NS alloy consists of face-centered-cubic (FCC) and ordered-FCC (L-12) dual-phase NS region and a small amount (similar to 2.5 vol%) of the ordered body-centered-cubic phase (B2). Significantly, the alloy exhibits outstanding harmony of the compressive yield strength (similar to 1.5 GPa) and strain (similar to 63%). The deformation substructure is mainly characterized by pronounced planar slip in the NS region. And the dynamic slip band refinement in the NS region coordinate with screw dislocations slip in the B2 grain enable the material shows excellent mechanical properties.

【 授权许可】

Free