Effect of secondary phases on the strength and elongation of a novel Mo-TiC-ZrC-C alloy

Previous experimental studies in the Mo-TiC-ZrC-C (TZM) alloy have shown the existence of secondary phases around the composition TiC, ZrC, TiO2, ZrO2 and ZrTiO4. No research about the interface of secondary phases and Mo matrix was indicated. We characterized the different secondary phases influenc...

Full description

Saved in:
Bibliographic Details
Published in:International journal of refractory metals & hard materials 2020-11, Vol.92, p.105336, Article 105336
Main Authors: Hu, Bo-liang, Wang, Kuai-she, Hu, Ping, Su, Yu-tong, Li, Shi-Lei, Xing, Hai-rui, Han, Jia-yu, Ge, Song-wei, Hua, Xing-jiang, Fu, Jing-bo, Chang, Tian
Format: Article
Language:English
Subjects:
Bonding strength
Electron density
Elongation
Interface
Mechanical properties
Mo-TiC-ZrC-C alloy
Phases
Secondary phases
Strength
Strengthening
Titanium dioxide
Zirconium carbide
Zirconium dioxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Previous experimental studies in the Mo-TiC-ZrC-C (TZM) alloy have shown the existence of secondary phases around the composition TiC, ZrC, TiO2, ZrO2 and ZrTiO4. No research about the interface of secondary phases and Mo matrix was indicated. We characterized the different secondary phases influence on the structure and mechanical properties by the mismatch and electron density. And discovered that ZrTiO4 has largest lattice misfit and electron density, contributing to better strengthening and toughening of TZM alloy. The ZrTiO4 interface bonding strength is superior to the other secondary phases. This new understanding opens opportunities for designing high strengthening-toughening Mo alloy. [Display omitted] •The effect of addition of TiC and ZrC on the strength and elongation of Mo-TiC-ZrC-C is studied•The composition 0.08%TiC-0.11%ZriC-0.06%C showed high strength of tensile strength 1292.65 Mpa and elongation 6.9%.•ZrTiO4 has largest lattice misfit and electron density, contributing to better strengthening and toughening of TZM alloy.
ISSN:0263-4368
2213-3917
DOI:10.1016/j.ijrmhm.2020.105336