期刊
INTERMETALLICS
卷 70, 期 -, 页码 24-28出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2015.11.002
关键词
High-entropy alloys; Toughness; Mechanical testing
资金
- National High Technology Research and Development Program of China [2009AA03Z113]
- National Science Foundation of China [51471025, 51210105006]
- 111 Project [B07003]
AlxCoCrFeNi high-entropy alloys (HEAs) with different aluminum contents (i.e., x values in molar ratio, where x = 0.1, 0.3) were initially prepared using vacuum magnetic levitation melting and, then, plate samples were prepared by hot forging method. The two five-element HEAs, Al0.1CoCrFeNi and A1(0.3)CoCrFeNi, both had a simple face-centered cubic (FCC) structure. The measurements of Charpy impact energy with V-type notch and tensile tests were carried out at different temperatures. It was observed that the tensile strength and elongation increased with decreasing temperatures and reached 1042 MPa and 81.6% at 77 K, respectively, for the Al0.1CoCrFeNi alloy. The Charpy impact energy reached a maximum value of 420 J at room temperature for the Al0.1CoCrFeNi alloy. (C) 2015 Elsevier Ltd. All rights reserved.
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