Effects of Heat-Treatment on the Microstructure and Wear Resistance of a High-Chromium Cast Iron for Rolls
Joint Authors
Guo, Zhi-hong
Xiao, Fu-ren
Lu, Su-ling
Li, Han-yun
Liao, Bo
Source
Advances in Materials Science and Engineering
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-10-16
Country of Publication
Egypt
No. of Pages
7
Abstract EN
The variations of microstructure and mechanical properties of a high-chromium cast iron for rolls were studied from as-cast to the final heat treatments.
Results show that the as-cast microstructure of the HCCI consists of M7C3 carbide, M23C6 carbide, martensite matrix, and retained austenite.
The large dendritic M7C3 carbide surrounds the matrix, and the M23C6 carbide is mainly distributed in the matrix.
Part of M23C6 carbide transforms to M7C3 carbide and is dissolved in austenite during austenization at 1020°C.
Thus, the amount of M23C6 carbide decreases, whereas that of M7C3 carbide increases after quenching; the highest hardness is also obtained.
After tempering, the martensite transforms to a tempered martensite, and some carbide precipitates in the martensite matrix.
The hardness also changes from HRC62.1, which corresponds to quenching, to HRC55.2 and HRC56.3, which correspond to once and twice tempering, respectively.
However, tempering could improve the impact toughness and wear resistance of the HCCI.
American Psychological Association (APA)
Guo, Zhi-hong& Xiao, Fu-ren& Lu, Su-ling& Li, Han-yun& Liao, Bo. 2016. Effects of Heat-Treatment on the Microstructure and Wear Resistance of a High-Chromium Cast Iron for Rolls. Advances in Materials Science and Engineering،Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1096505
Modern Language Association (MLA)
Guo, Zhi-hong…[et al.]. Effects of Heat-Treatment on the Microstructure and Wear Resistance of a High-Chromium Cast Iron for Rolls. Advances in Materials Science and Engineering No. 2016 (2016), pp.1-7.
https://search.emarefa.net/detail/BIM-1096505
American Medical Association (AMA)
Guo, Zhi-hong& Xiao, Fu-ren& Lu, Su-ling& Li, Han-yun& Liao, Bo. Effects of Heat-Treatment on the Microstructure and Wear Resistance of a High-Chromium Cast Iron for Rolls. Advances in Materials Science and Engineering. 2016. Vol. 2016, no. 2016, pp.1-7.
https://search.emarefa.net/detail/BIM-1096505
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1096505