Title

Age Strengthening of Gray Cast Iron

Abstract

Statistically significant; room temperature, age strengthening has been observed in 23 of 25 separate studies conducted in ten different foundries. The increase in strength ranged from 3.3% to a high of 13.5%. The strength increase is time and temperature dependent and thus can be accelerated by holding test bars at temperatures in the range of 85°C to 285°C prior to testing. Initial tests indicate that the aging process can be reversed by resolutionizing and water quenching from 704°C. Nitrogen present in excess of stoichiometry with strong nitride formers seems to be a factor.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Age Strengthening; Artificial Aging; Gray Cast Iron

Library of Congress Subject Headings

Nitrogen

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2003 Maney Publishing, All rights reserved.

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