Nb-Si-B계에서 Nb+T2 공존 영역의 미세조직 특성

Title
Nb-Si-B계에서 Nb+T2 공존 영역의 미세조직 특성
Other Titles
Microstructure of the Nb-Si-B Alloys in the Nb+T-2 Region
Authors
김영도
Keywords
intermetallics; solidification; microstructure; hardness test; T2 phase
Issue Date
2015-07
Publisher
KOREAN INST METALS MATERIALS
Citation
대한금속재료학회지, v. 53, no. 1, Page. 43-50
Abstract
Intermetallic-based materials are interesting for high temperature structural applications because of their good mechanical properties and enhanced oxidation resistance. In this study microstructural examination of the Nb-Si-B alloys at Nb-rich compositions was performed. The Nb-rich corner of the Nb-Si-B system is very attractive because the constituent phases are Nb (a ductile and tough phase with a high melting temperature) and T-2 (a very hard intermetallic compound with favorable oxidation resistance), which make a good combination for high temperature structural materials. At compositions lower than 82 at%Nb the microstructure shows the T-2 primary phase and eutectic (T-2+Nb), while the Nb primary phase and eutectic were formed at higher compositions. Hardness tests (Rockwell A-scale and micro Vickers) were carried out to estimate the optimal composition for good mechanical properties.
URI
http://kiss.kstudy.com/journal/thesis_name.asp?tname=kiss2002&key=3283806http://hdl.handle.net/20.500.11754/26188
ISSN
1738-8228
DOI
http://dx.doi.org/10.3365/KJMM.2014.53.1.43
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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