Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/70664
標題: Hardness, toughness and cracking systems of primary (Cr,Fe)(23)C-6 and (Cr,Fe)(7)C-3 carbides in high-carbon Cr-based alloys by indentation
作者: Lin, C.M.
Chang, C.M.
Chen, J.H.
Wu, W.T.
關鍵字: Cr-based alloys;Carbides;Indentation technique;Palmqvist cracks;Mechanical properties;fracture-toughness;vickers indentation;hardfacing alloys;ceramics;silicon;glass;microstructure;brittleness;model;wear
Project: Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
期刊/報告no:: Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, Volume 527, Issue 18-19, Page(s) 5038-5043.
摘要: 
The current investigation evaluates the hardness, indentation toughness (K-C) and cracking systems of primary carbides in high-carbon Cr-based alloys using the indentation technique and compares the results calculated from different model equations. The primary carbides in high-carbon Cr-based alloys are (Cr,Fe)(23)C-6 and (Cr,Fe)(7)C-3 carbides. The results reveal that K-C evaluation of primary carbides by the Vickers indentation method strongly depends on the selection of K-C equations, crack systems and crack length. The cracking systems of primary carbides shown by the polishing procedure are Palmqvist cracks. Niihara's equation with the Palmqvist crack is most appropriate to evaluate the K-C of primary carbides, after experimentally assessing its applicability. The K-C values of primary (Cr,Fe)(23)C-6 and (Cr,Fe)(7)C-3 carbides are 3.8 +/- 0.2 and 2.4 +/- 0.1 MPa m(1/2). (C) 2010 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/70664
ISSN: 0921-5093
DOI: 10.1016/j.msea.2010.04.073
Appears in Collections:期刊論文

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