Research Article | OPEN ACCESS
Effect of Low Temperature Heat Treatment on Different Original Graphite Microstructures of Nodular Cast Iron
Yan Zhao
Department of Mechanical and Electronical Engineering, Dezhou University, Dezhou 253023, China
Research Institute of Engineering Materials, Dezhou University, Dezhou 253023, China
Research Journal of Applied Sciences, Engineering and Technology 2013 14:2621-2624
Received: January 05, 2013 | Accepted: February 08, 2013 | Published: August 10, 2013
Abstract
To understand the effect of low temperature heat treatment on microstructure of nodular graphite, nodular cast irons with the same chemical composition but different microstructure were made by the heredity of raw materials. The effects of low temperature heat treatment on the different microstructures of graphite were studied. The results show that after the low temperature treatment, the modularization rate and level are improved observably for as-cast graphite with lower degree of graphitization and worse effect of nodularization and the mean sphere diameter of the graphite increases; the spot graphite arises for as-cast graphite with higher degree of graphitization and better effect of nodularization, the mean sphere diameter of the graphite decreases, the spot and nodular graphite distribute alternately, the spheroidization grade and nodularization rate do not change obviously.
Keywords:
Low temperature heat treatment, microstructure of graphite, nodular graphite cast iron,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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