Comparative studies on densification behavior, microstructure, mechanical properties and oxidation resistance of Mo-12Si-10B and Mo3Si-free Mo-26Nb-12Si-10B alloys

Tao Yang; Xiping Guo

doi:10.1016/j.ijrmhm.2019.104993

Comparative studies on densification behavior, microstructure, mechanical properties and oxidation resistance of Mo-12Si-10B and Mo₃Si-free Mo-26Nb-12Si-10B alloys

Tao Yang, Xiping Guo

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

Two bulk Mo-Si-B based alloys (Mo-12Si-10B and Mo-26Nb-12Si-10B (at.%), abbreviated as 0Nb and 26Nb alloy respectively) were fabricated by mechanical alloying and then hot pressing. Comparative studies were carried out on the densification behavior, microstructure, room-temperature fracture toughness, elevated temperature compression and oxidation resistance of these two alloys. The results showed that alloy 0Nb was composed of (Mo), Mo₃Si and Mo₅SiB₂, while alloy 26Nb was free of Mo₃Si and had higher (Mo) content and a little γNb₅Si₃. Compared to the alloy 0Nb, alloy 26Nb presented better compactibility, higher room-temperature fracture toughness (8.84 ± 0.17 vs. 6.77 ± 0.20 MPa·m^1/2) and elevated temperature compression strength (851.7 ± 11.7 vs. 644.2 ± 10.2 MPa) but worse oxidation resistance.

Original language	English
Article number	104993
Journal	International Journal of Refractory Metals and Hard Materials
Volume	84
DOIs	https://doi.org/10.1016/j.ijrmhm.2019.104993
State	Published - Nov 2019

Keywords

Densification behavior
Mechanical property
Mo-Nb-Si-B alloy
Oxidation resistance

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title = "Comparative studies on densification behavior, microstructure, mechanical properties and oxidation resistance of Mo-12Si-10B and Mo3Si-free Mo-26Nb-12Si-10B alloys",

abstract = "Two bulk Mo-Si-B based alloys (Mo-12Si-10B and Mo-26Nb-12Si-10B (at.%), abbreviated as 0Nb and 26Nb alloy respectively) were fabricated by mechanical alloying and then hot pressing. Comparative studies were carried out on the densification behavior, microstructure, room-temperature fracture toughness, elevated temperature compression and oxidation resistance of these two alloys. The results showed that alloy 0Nb was composed of (Mo), Mo3Si and Mo5SiB2, while alloy 26Nb was free of Mo3Si and had higher (Mo) content and a little γNb5Si3. Compared to the alloy 0Nb, alloy 26Nb presented better compactibility, higher room-temperature fracture toughness (8.84 ± 0.17 vs. 6.77 ± 0.20 MPa·m1/2) and elevated temperature compression strength (851.7 ± 11.7 vs. 644.2 ± 10.2 MPa) but worse oxidation resistance.",

keywords = "Densification behavior, Mechanical property, Mo-Nb-Si-B alloy, Oxidation resistance",

author = "Tao Yang and Xiping Guo",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

month = nov,

doi = "10.1016/j.ijrmhm.2019.104993",

language = "英语",

volume = "84",

journal = "International Journal of Refractory Metals and Hard Materials",

issn = "0263-4368",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Comparative studies on densification behavior, microstructure, mechanical properties and oxidation resistance of Mo-12Si-10B and Mo3Si-free Mo-26Nb-12Si-10B alloys

AU - Yang, Tao

AU - Guo, Xiping

PY - 2019/11

Y1 - 2019/11

N2 - Two bulk Mo-Si-B based alloys (Mo-12Si-10B and Mo-26Nb-12Si-10B (at.%), abbreviated as 0Nb and 26Nb alloy respectively) were fabricated by mechanical alloying and then hot pressing. Comparative studies were carried out on the densification behavior, microstructure, room-temperature fracture toughness, elevated temperature compression and oxidation resistance of these two alloys. The results showed that alloy 0Nb was composed of (Mo), Mo3Si and Mo5SiB2, while alloy 26Nb was free of Mo3Si and had higher (Mo) content and a little γNb5Si3. Compared to the alloy 0Nb, alloy 26Nb presented better compactibility, higher room-temperature fracture toughness (8.84 ± 0.17 vs. 6.77 ± 0.20 MPa·m1/2) and elevated temperature compression strength (851.7 ± 11.7 vs. 644.2 ± 10.2 MPa) but worse oxidation resistance.

AB - Two bulk Mo-Si-B based alloys (Mo-12Si-10B and Mo-26Nb-12Si-10B (at.%), abbreviated as 0Nb and 26Nb alloy respectively) were fabricated by mechanical alloying and then hot pressing. Comparative studies were carried out on the densification behavior, microstructure, room-temperature fracture toughness, elevated temperature compression and oxidation resistance of these two alloys. The results showed that alloy 0Nb was composed of (Mo), Mo3Si and Mo5SiB2, while alloy 26Nb was free of Mo3Si and had higher (Mo) content and a little γNb5Si3. Compared to the alloy 0Nb, alloy 26Nb presented better compactibility, higher room-temperature fracture toughness (8.84 ± 0.17 vs. 6.77 ± 0.20 MPa·m1/2) and elevated temperature compression strength (851.7 ± 11.7 vs. 644.2 ± 10.2 MPa) but worse oxidation resistance.

KW - Densification behavior

KW - Mechanical property

KW - Mo-Nb-Si-B alloy

KW - Oxidation resistance

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U2 - 10.1016/j.ijrmhm.2019.104993

DO - 10.1016/j.ijrmhm.2019.104993

M3 - 文章

AN - SCOPUS:85067876602

SN - 0263-4368

VL - 84

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

M1 - 104993

ER -

Comparative studies on densification behavior, microstructure, mechanical properties and oxidation resistance of Mo-12Si-10B and Mo₃Si-free Mo-26Nb-12Si-10B alloys

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Keywords

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