Hui Wang Lin

US Patent:

6524405, Feb 25, 2003

Filed:

Mar 31, 2000

Appl. No.:

09/540403

Inventors:

Hui Lin - Malvern PA 19355

International Classification:

C22C 2800

US Classification:

148325, 148326, 148328, 148333, 148419, 148423, 148442, 420 62, 420 79, 420100, 420583, 420428

Abstract:

The present invention is directed to an iron, aluminum, chromium, carbon alloy and a method of producing the same, wherein the alloy has good room temperature ductility, excellent high temperature oxidation resistance and ductility. The alloy includes about 10 to 70 at. % iron, about 10 to 45 at. % aluminum, about 1 to 70 at. % chromium and about 0. 9 to 15 at. % carbon. The invention is also directed to a material comprising a body-centered-cubic solid solution of this alloy, and a method for strengthening this material by the precipitation of body-centered-cubic particles within the solid solution, wherein the particles have substantially the same lattice parameters as the underlying solid solution. The ease of processing and excellent mechanical properties exhibited by the alloy, especially at high temperatures, allows it to be used in high temperature structural applications, such as a turbocharger component.

US Patent:

6841011, Jan 11, 2005

Filed:

Sep 26, 2002

Appl. No.:

10/254654

Inventors:

Hui Lin - Malvern PA, US

International Classification:

C22C 2800
C22C 3806
C22C 3818
C21D 900

US Classification:

148325, 148333, 148423, 148419, 148442, 148548

Abstract:

The present invention is directed to an iron, aluminum, chromium, carbon alloy and a method of producing the same, wherein the alloy has g good room temperature ductility, excellent high temperature oxidation resistance and ductility. The alloy includes about 10 to 70 at. % iron, about 10 to 45 at. % aluminum, about 1 to 70 at. % chromium and about 0. 9 to 15 at. % carbon. The invention is also directed to a material comprising a body-centered-cubic solid solution of this alloy, and a method for strengthening this material by the precipitation of body-centered-cubic particles within the solid solution, wherein the particles have substantially the same lattice parameters as the underlying solid solution. The ease of processing and excellent mechanical properties exhibited by the alloy, especially at high temperatures, allows it to be used in high temperature structural applications, such as a turbocharger component.