Multi-component solid solution alloys having high mixing entropy

• US 9,150,945 B2
• Filed: 10/27/2011
• Issued: 10/06/2015
• Est. Priority Date: 10/27/2011
• Status: Active Grant

• Current Assignee: UT-Battelle LLC
• Original Assignee: UT-Battelle LLC
• Inventors: Bei, Hongbin
• Primary Examiner(s): Ip, Sikyin
• Application Number:
  US13/283,078
• Publication Number:
  US 20130108502A1
• Time in Patent Office: 1,440 Days
• Field of Search: 420/580, 420/591, 148/442
• US Class Current: 1/1
• CPC Class Codes: C22C 1/02 by melting C22C1/1036 takes precedence
• CPC Class Codes: C22C 19/05 with chromium
• CPC Class Codes: C22C 19/07 based on cobalt
• CPC Class Codes: C22C 27/02 Alloys based on vanadium, niobium, or tantalum
• CPC Class Codes: C22C 27/06 Alloys based on chromium
• CPC Class Codes: C22C 30/00 Alloys containing less than 50% by weight of each constituent
• CPC Class Codes: C22C 30/02 containing copper
• CPC Class Codes: C22C 9/06 with nickel or cobalt as the next major constituent

Abstract

A multi-component high-entropy alloy includes a composition selected from the following group: VNbTaTiMoWRe, VNbTaTiMoW, VNbTaTiMoRe, VNbTaTiWRe, VNbTaMoWRe, VNbTiMoWRe, VTaTiMoWRe, NbTaTiMoWRe, VNbTaTiMo, VNbTaTiW, VNbTaMoW, VNbTiMoW, VTaTiMoW, NbTaTiMoW, VNbTaTiRe, VNbTaMoRe, VNbTiMoRe, VTaTiMoRe, NbTaTiMoRe, VNbTaWRe, VNbTiWRe, VTaTiWRe, NbTaTiWRe, VNbMoWRe, VTaMoWRe, NbTaMoWRe, VTiMoWRe, NbTiMoWRe, TaTiMoWRe, wherein relative amounts of each element vary by no more than ±15 atomic %.

Claims

1. A multi-component single phase high-entropy alloy consisting of a solid solution composition selected from the group consisting of:

VNbTaTiMoWRe, VNbTaTiMoRe, VNbTaTiWRe, VNbTaMoWRe, VNbTiMoWRe, VTaTiMoWRe, NbTaTiMoWRe, VNbTaTiRe, VNbTaMoRe, VNbTiMoRe, VTaTiMoRe, NbTaTiMoRe, VNbTaWRe, VNbTiWRe, VTaTiWRe, NbTaTiWRe, VNbMoWRe, VTaMoWRe, NbTaMoWRe, VTiMoWRe, NbTiMoWRe, TaTiMoWRe, wherein relative amounts of each element vary by no more than 5 atomic %, the alloy having a mixing entropy greater than 1.6R.

2. A multi-component single phase high-entropy alloy consisting of a solid solution composition selected from the group consisting of:

VNbTaTiMoW, VNbTaTiMo, VNbTaTiW, VNbTaMoW, VNbTiMoW, VTaTiMoW, NbTaTiMoW, wherein relative amounts of each element vary by no more than 5 atomic %, the alloy having a mixing entropy greater than 1.6R.