Abstract

A cast iron alloy is provided with a composition in weight percent (wt.%) of carbon between 2.6 to 3.4 wt.%, silicon between 2.4 to 3.2 wt. %, manganese between 0.3 to 0.6 wt. %, molybdenum between 0.4 to 1.2 wt. %, nickel between 0.6 to 1.75 wt.%, magnesium between 0.01 to 0.075 wt.%, aluminum between 1.8 to 3.5 wt.%, sulfur between 0.003 to 0.025 wt.%, zirconium between 0.001 to 0.02 wt. %, cerium between 0.001 to 0.03 wt. %, lanthanum between 0.0005 to 0.02 wt. %, and a balance of iron and unavoidable trace elements. A part formed from the cast iron alloy is also provided and the part has an Ac 1 temperature equal to or greater than 895° C. and a thermo-mechanical fatigue lifetime of at least 10,000 cycles when cycled between 400° C. to 800° C. with a total cyclic strain equal to 0.001 m/m.

Department(s)

Materials Science and Engineering

Comments

Docket Number: 21MST023-UTL

Filing Date: 09/21/2021

Issue Date: 06/06/2023, FY23

References Cited

U.S. Patent Documents:

2010/0178193 A1* 7/2010 Zeipper…............C22C 37/10 420/28

2013/0045127 A1* 2/2013 Sugiyama…............C22C 33/08 164/47

2016/0053351 A1* 2/2016 Fujimoto...............C22C 37/10 420/28

Foreign Patent Documents:

EP 0076701 4/1983

EP 1386976 2/2004

EP 1865082 12/2007

EP 2924138 9/2015

KR 20130130490 A * 12/2013

Prior Publication Data:

US 2023/0085990 A1 March 23, 2023

Patent Application Number

17/448,262

Patent Number

US 11,667,995 B2

Document Type

Patent

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2026 Ford Global Technologies, LLC.; The Curators of the University of Missouri, All rights reserved

Additional Rights Information

Assignees: Ford Global Technologies, LLC., Dearborn, MI (US); The Curators of the University of Missouri, Columbia, MO (US)

Publication Date

6 June, 2023

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