Boron solubility in Fe-Cr-B cast irons

Guo, CQ and Kelly, PM (2003) Boron solubility in Fe-Cr-B cast irons. Materials Science And Engineering A-structural Materials Properties Microstructure And Processing, 352 1-2: 40-45.


Author Guo, CQ
Kelly, PM
Title Boron solubility in Fe-Cr-B cast irons
Journal name Materials Science And Engineering A-structural Materials Properties Microstructure And Processing   Check publisher's open access policy
ISSN 0921-5093
Publication date 2003
Sub-type Article (original research)
DOI 10.1016/S0921-5093(02)00449-5
Volume 352
Issue 1-2
Start page 40
End page 45
Total pages 6
Editor Elsevier Science
Place of publication Lausanne, switzerland
Publisher Elsevier Science SA
Collection year 2003
Language eng
Subject C1
291403 Alloy Materials
671001 Structural metal products
Abstract Boron solubility in the as-cast and solution treated martensite of Fe-Cr-B cast irons, containing approximately 1.35 wt.% of boron, 12 wt.% of chromium, as well as other alloying elements, has been investigated using conventional microanalysis. The significant microstructural variations after tempering at 750 degreesC for 0.5-4 h, compared with the original as-cast and solution treated microstructures, indicated that the matrix consisted of boron and carbon supersaturated solid solutions. The boron solubility detected by electron microprobe was between 0.185-0.515 wt.% for the as-cast martensite and 0.015-0.0589 wt.% for the solution treated martensite, much higher than the accepted value of 0.005 wt.% in pure iron. These remarkable increases are thought to be associated with some metallic alloying element addition, such as chromium, vanadium and molybdenum, which have atomic diameters larger than iron, and expand the iron lattice to sufficiently allow boron atoms to occupy the interstitial sites in iron lattice. (C) 2002 Elsevier Science B.V. All rights reserved.
Keyword Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Boron Solubility
Fe-cr-b
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
2004 Higher Education Research Data Collection
 
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