Published March 1, 2016 | Version v1
Journal article Metadata-only

Microstructure and fracture toughness in boron added NbSi2(C40)/MoSi2(C11b) duplex crystals

Creators

  • 1. Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan)
  • 2. Department of Adaptive Machine Systems, Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan)
  • 3. Center for Elements Strategy Initiative for Structural Materials (ESISM), Kyoto University, Sakyo-ku, Kyoto 606-8501 (Japan)
  • 4. Department of Materials Science and Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501 (Japan)

Description

The effect of B-addition on the microstructure and fracture toughness of (Mo0.85Nb0.15)Si2 crystals with an oriented lamellar microstructure was investigated. B-addition led to an increase in the volume fraction of the C11b phase, which possesses different orientation relationship from that of the fine lamellae, and a reduction in their precipitation rate. The fracture toughness of the B-added crystal with the varied microstructure exhibited a value more than 4.0 MPa m1/2, that was significantly higher than that of the ternary crystal.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.scriptamat.2015.11.004

Additional details

Identifiers

DOI
10.1016/j.scriptamat.2015.11.004;
PII
S1359-6462(15)30044-0;

Publishing Information

Journal Title
Scripta Materialia
Journal Volume
113
Journal Page Range
p. 236-240
ISSN
1359-6462
CODEN
SCMAF7

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
48012706
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
BORON ADDITIONS; CRYSTALS; FRACTURE PROPERTIES; FRACTURES; LAMELLAE; MICROSTRUCTURE; MOLYBDENUM SILICIDES; NIOBIUM SILICIDES; ORIENTATION; PRECIPITATION
Descriptors DEC
ALLOYS; BORON ALLOYS; FAILURES; MECHANICAL PROPERTIES; MOLYBDENUM COMPOUNDS; NIOBIUM COMPOUNDS; REFRACTORY METAL COMPOUNDS; SEPARATION PROCESSES; SILICIDES; SILICON COMPOUNDS; TRANSITION ELEMENT COMPOUNDS

Optional Information

Copyright
Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.