Granted Patent B2

US 10,677,109 · App. 15/679,651 · Granted Jun 9, 2020

Inventors: Cong Yue Qiao (Menominee, MI); David Doll (Houston, TX); Todd Trudeau (Menominee, MI); Douglas Dooley (Menominee, MI)

Assignee: I. E. JONES COMPANY

F01L3/02C21D1/18C21D1/25C21D6/002C21D6/004C21D6/005C21D6/007C21D6/008C21D6/02C21D9/0068C22C38/001C22C38/02C22C38/04C22C38/22C22C38/24C22C38/26C22C38/42C22C38/44C22C38/46C22C38/48C22C38/52C22C38/54F01L2101/00F01L2103/00F01L2800/18F16K25/005

Abstract

Claims (101)

1. An iron-based alloy comprising, in weight percent:

carbon from about 1 to about 2 percent;

manganese from about 0.1 to about 1 percent;

silicon from about 0.1 to about 2.5 percent;

chromium from 15 to about 19 percent;

nickel up to about 8 percent;

vanadium from about 0.8 to about 5 percent;

molybdenum from 15 to about 19 percent;

tungsten up to about 0.5 percent;

niobium from about 1 to about 4 percent;

cobalt up to about 5.5 percent;

boron from about 0.05 to about 0.5 percent;

nitrogen up to about 0.5 percent;

copper up to about 1.5 percent;

sulfur up to about 0.3 percent;

phosphorus up to about 0.3 percent;

up to about 5 percent total of tantalum, titanium, hafnium and zirconium;

iron from about 50 to about 70 percent; and

incidental impurities wherein the alloy contains a ratio of Cr/Mo of at least 1.

2. The alloy according to claim 1 , wherein the alloy comprises:

carbon from about 1.1 to about 1.8 percent;

manganese from about 0.2 to about 0.8 percent;

silicon from about 0.5 to about 1.5 percent;

chromium from 15 to about 18.5 percent;

nickel from about 1 to about 3 percent;

vanadium from about 1 to about 4.5 percent;

molybdenum from 15 to about 18.5 percent;

tungsten up to about 0.5 percent;

niobium from about 1.25 to about 3.5 percent;

cobalt up to about 3 percent;

boron from about 0.05 to about 0.3 percent;

nitrogen from about 0.005 to about 0.5 percent;

copper up to about 0.5 percent;

sulfur up to about 0.3 percent;

phosphorus up to about 0.3 percent;

up to about 5 percent total of tantalum, titanium, hafnium and zirconium;

iron from about 50 to about 70 percent; and

incidental impurities.

3. The alloy according to claim 1 , comprising:

carbon from about 1.4 to about 1.6 percent;

manganese from about 0.2 to about 0.8 percent;

silicon from about 0.5 to about 1.5 percent;

chromium from 15 to about 19 percent;

nickel from about 1 to about 3 percent;

vanadium from about 1 to about 4.5 percent;

molybdenum from 15 to about 19 percent;

tungsten up to about 0.5 percent;

niobium from about 1.5 to about 2.5 percent;

cobalt up to about 3 percent;

boron from about 0.05 to about 0.3 percent;

nitrogen about 0.005 to about 0.3 percent;

copper up to about 0.5 percent;

sulfur up to about 0.3 percent;

phosphorus up to about 0.3 percent;

up to about 0.3 percent total of tantalum, titanium, hafnium and zirconium;

iron from about 50 to about 70 percent; and

incidental impurities.

4. The alloy according to claim 1 , wherein the alloy contains about 53 to about 66 weight percent iron, up to 0.15 percent tungsten and up to 0.25 percent cobalt.

5. The alloy according to claim 1 , wherein the alloy has a hardness of at least 55 Rockwell C.

6. The alloy according to claim 1 , wherein the alloy has a microhardness (HV10) of at least 350 at a temperature of about 1000° F.

7. The alloy according to claim 1 , wherein the alloy consists essentially of, in weight percent:

carbon from about 1.4 to about 1.6 percent;

manganese from about 0.2 to about 0.4 percent;

silicon from about 0.5 to about 1 percent;

chromium from 15 to about 19 percent;

nickel from about 1 to about 2.3 percent;

vanadium from about 1 to about 4.5 percent;

molybdenum from 15 to about 19 percent;

tungsten up to about 0.15 percent;

niobium from about 1.5 to about 2.5 percent;

cobalt up to about 0.2 percent;

boron from about 0.05 to about 0.3 percent;

nitrogen from about 0.005 to about 0.3 percent;

copper up to about 0.5 percent;

sulfur up to about 0.3 percent;

phosphorus up to about 0.3 percent;

up to about 0.5 percent total of tantalum, titanium, hafnium and zirconium;

iron from about 50 to about 70 percent; and

incidental impurities wherein a ratio of chromium to molybdenum is 1 to about 1.5.

8. A cast part comprising the alloy according to claim 1 , wherein the cast part has a fully ferritic microstructure.

9. An iron-based alloy comprising, in weight percent:

carbon from about 1 to about 2 percent;

manganese from about 0.1 to about 1 percent;

silicon from about 0.1 to about 2.5 percent;

chromium from 15 to about 19 percent;

nickel up to about 8 percent;

vanadium from about 0.8 to about 5 percent;

molybdenum from 15 to about 19 percent;

tungsten up to about 0.5 percent;

niobium from about 1 to about 4 percent;

cobalt up to about 5.5 percent;

boron up to about 0.5 percent;

nitrogen up to about 0.5 percent;

copper up to about 1.5 percent;

sulfur up to about 0.3 percent;

phosphorus up to about 0.3 percent;

up to about 5 percent total of tantalum, titanium, hafnium and zirconium;

iron from about 50 to about 70 percent; and

incidental impurities wherein the alloy contains a ratio of Cr/Mo of 1 to about 1.5, and wherein the alloy has an as-cast fully ferritic matrix microstructure.

10. The alloy according to claim 9 , wherein the Cr/Mo ratio is 1 to about 1.1.

11. A valve seat insert for an internal combustion engine comprising the alloy according to claim 9 .

Assignments (1)

Continuity (1)

Cited By (19)

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