Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 767, Issue -, Pages 1064-1071Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.07.156
Keywords
W; Re; SiC; Hardness; Strength; Toughness
Categories
Funding
- National Natural Science Foundation of China [51521001, 51572208]
- 111 Project [B13035]
- Joint Fund [6141A02022223]
- Nature Science Foundation of the Hubei Province [2016CFA006]
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In this study, Re alloying and self-generated hard phase enhancement were used to improve the strength and toughness of W. The arc-melting W-based composite with 10 wt% Re and 1 wt% SiC addition is composed of toughening W-Re matrix and ceramic particles (W2C and W5Si3). This composite having high strain capacity (37.1%) at room temperature (more than 5 times of W), exhibits the excellent hardness (5.04 GPa), yield strength (0.92 GPa) and fracture strength (1.78 GPa) due to the synergetic mechanism, grain refinement, and good interfaces bonding state. The synergetic mechanism of Re and SiC addition on strength and toughness was proposed. (C) 2018 Elsevier B.V. All rights reserved.
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