Title of article
Processing, microstructure and properties of Al0.6CoNiFeTi0.4 high entropy alloy with nanoscale twins
Author/Authors
Chen، نويسنده , , Weiping and Fu، نويسنده , , Zhiqiang and Fang، نويسنده , , Sicong and Wang، نويسنده , , Yanping and Xiao، نويسنده , , Huaqiang and Zhu، نويسنده , , Dezhi، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
6
From page
439
To page
444
Abstract
Al0.6CoNiFeTi0.4 high entropy alloy was synthesized by mechanical alloying (MA) and spark plasma sintering (SPS). Only a FCC structure phase during MA was observed, while an ordered BCC phase and a FCC phase after SPS. The ordered BCC phase was much finer than the FCC phase after SPS. Moreover, twinning occurred only in the FCC phase during the SPS process. Al0.6CoNiFeTi0.4 high entropy alloy with a density of 98.2% and nanoscale twins exhibits excellent mechanical properties at room temperature. The yield stress, compressive strength and Vickers hardness of the alloy are 2732 MPa, 3172 MPa, 10.1% and 712±12 HV, respectively. The fracture mechanism of this alloy is observed as intergranular fracture.
Keywords
spark plasma sintering , Nanoscale twins , High entropy alloys , mechanical alloying
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2013
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2172598
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