High-entropy alloy particle reinforced Al-based amorphous alloy composite with ultrahigh strength prepared by spark plasma sintering. (5th November 2016)

• Record Type: Journal Article
• Authors: Tan, Zhen; Wang, Lu; Xue, Yunfei; Zhang, Peng; Cao, Tangqing; Cheng, Xingwang
• Is Part Of: Materials & design. Volume 109(2016)
• Page Start: 219
• Page End: 226
• Publication Date: 2016-11-05
• Subjects: Metal matrix composites -- Powder metallurgy -- Crystal structure -- Diffusion -- Mechanical properties; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2016.07.086
• Languages: English
• ISSNs: 0264-1275

Abstract

Abstract: An Al0.6 CoCrFeNi high-entropy alloy (HEA) particle reinforced Al65 Cu16.5 Ti18.5 amorphous alloy composite was prepared by spark plasma sintering (SPS). There is an interdiffusion (ID) layer between the HEA particle and the matrix. The yield strength of the composite is as high as 3120 ± 80 MPa, which was attributed to the combined action of the stable propagation of cracks, the significant increase of fracture surface energy, and the relative low content of sintering defects in the matrix. Graphical abstract: Highlights: The high-entropy alloy particles reinforced amorphous alloy composite was prepared. The composite exhibits outstanding yield strength3120 ± 80 MPa. There is an interdiffusion layer between the HEA particle and the matrix. The propagation of microcracks could keep stable within the interdiffusion layer.