	US 11,840,746 B2
	High temperature lightweight Al—Fe—Si based alloys
Sujeily Soto Medina, Gainesville, FL (US); Michele V. Manuel, Gainesville, FL (US); Richard Hennig, Gainesville, FL (US); Lilong Zhu, Gainesville, FL (US); and Biswas Rijal, Gainesville, FL (US)
Assigned to UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC., Gainesville, FL (US)
Filed by University of Florida Research Foundation, Inc., Gainesville, FL (US)
Filed on Jul. 20, 2020, as Appl. No. 16/933,581.
Claims priority of provisional application 62/929,274, filed on Nov. 1, 2019.
Claims priority of provisional application 62/876,202, filed on Jul. 19, 2019.
Prior Publication US 2021/0017630 A1, Jan. 21, 2021
Int. Cl. C22C 21/00 (2006.01); C22F 1/04 (2006.01)

CPC C22C 21/00 (2013.01) [C22F 1/04 (2013.01)]

15 Claims

1. A composition comprising Al—Fe—Si—X quaternary intermetallic compound, wherein

Al is in the amount of from about 60.0 atomic percent to about 70.0 atomic percent,

Fe is in the amount of from about 13.0 atomic percent to about 30.0 atomic percent, and

Si is in the amount of from about 5.0 atomic percent to about 20.0 atomic percent,

wherein X is selected from Ni, Co, Cu, or Zn,

wherein when X is Ni, the amount of Ni is greater than 2.0 atomic percent,

wherein when X is Co, the amount of Co is from about 0.1 atomic percent to about 8.0 atomic percent,

wherein when X is Zn, the amount of Zn is from about 0.1 atomic percent to about 10.0 atomic percent, and

wherein when wherein X is Cu, the amount of Cu is from about 0.1 atomic percent to about 2.0 atomic percent.