Details

Autor(en) / Beteiligte

• Zhang, Aijun
• Han, Jiesheng
• Meng, Junhu
• Su, Bo
• Li, Pengde

Titel

Rapid preparation of AlCoCrFeNi high entropy alloy by spark plasma sintering from elemental powder mixture

Ist Teil von

• Materials letters, 2016-10, Vol.181, p.82-85

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A rapid method using spark plasma sintering (SPS) to prepare the AlCoCrFeNi high entropy alloy (HEA) from elemental powder mixture is firstly presented. The SPSed AlCoCrFeNi HEA consists of a face-centered cubic (FCC) phase and a duplex body-centered cubic (BCC) structure (composed of spinodally modulated disordered and ordered BCC phases). The microhardness, yield strength, compressive strength, ultimate plasticity strain and fracture toughness of the HEA are 518 HV, 1262MPa, 3228MPa, 29.1% and 25.2MPam1/2, respectively. The good mechanical properties are mainly contributed to the effective combination of the BCC and the FCC phases. This method has great potential for preparing HEAs in future. [Display omitted] •A rapid method using SPS to prepare HEAs is reported.•HEAs can be directly prepared from elemental powder mixture by SPS.•The SPSed AlCoCrFeNi HEA has good mechanical properties.