Ductility of Mo-12Si-8.5B alloys doped with lanthanum oxide by the liquid-liquid doping method

Wenhu Li; Guojun Zhang; Shixiong Wang; Bin Li; Jun Sun

doi:10.1016/j.jallcom.2015.04.047

Ductility of Mo-12Si-8.5B alloys doped with lanthanum oxide by the liquid-liquid doping method

Wenhu Li
, Guojun Zhang
, Shixiong Wang
, Bin Li
, Jun Sun

School of Materials Science and Engineering

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

33 Scopus citations

Abstract

Mo-12Si-8.5B (Mo-Si-B) alloys doped with different mass fractions (0.3 wt%, 0.6 wt%, and 0.9 wt%) of lanthanum oxide (La₂O₃) were prepared by liquid-liquid (L-L) doping, mechanical alloying and hot pressing sintering techniques. The observation of the microstructures of the Mo-Si-B alloys reveals that the grain sizes of the alloys were refined with the increase in La₂O₃ doping. The fracture toughness values of the alloys of over 10 MPa m^1/2 reveal that the addition of La₂O₃ via the L-L doping method can obviously improve the alloy fracture toughness compared to the alloys doped with La₂O₃ via the solid-solid (S-S) doping method. In addition, compression tests indicate that the compression strength of the alloys was improved compared to Mo-12Si-8.5B alloys.

Original language	English
Pages (from-to)	34-39
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	642
DOIs	https://doi.org/10.1016/j.jallcom.2015.04.047
State	Published - 5 Sep 2015

Keywords

Fine-grain strengthening
Lanthanum oxide
Liquid-liquid doping
Mo-Si-B alloy

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10.1016/j.jallcom.2015.04.047

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@article{d14b4438ec9b45a7aedff1a7fbdcd690,

title = "Ductility of Mo-12Si-8.5B alloys doped with lanthanum oxide by the liquid-liquid doping method",

abstract = "Mo-12Si-8.5B (Mo-Si-B) alloys doped with different mass fractions (0.3 wt\%, 0.6 wt\%, and 0.9 wt\%) of lanthanum oxide (La2O3) were prepared by liquid-liquid (L-L) doping, mechanical alloying and hot pressing sintering techniques. The observation of the microstructures of the Mo-Si-B alloys reveals that the grain sizes of the alloys were refined with the increase in La2O3 doping. The fracture toughness values of the alloys of over 10 MPa m1/2 reveal that the addition of La2O3 via the L-L doping method can obviously improve the alloy fracture toughness compared to the alloys doped with La2O3 via the solid-solid (S-S) doping method. In addition, compression tests indicate that the compression strength of the alloys was improved compared to Mo-12Si-8.5B alloys.",

keywords = "Fine-grain strengthening, Lanthanum oxide, Liquid-liquid doping, Mo-Si-B alloy",

author = "Wenhu Li and Guojun Zhang and Shixiong Wang and Bin Li and Jun Sun",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = sep,

day = "5",

doi = "10.1016/j.jallcom.2015.04.047",

language = "英语",

volume = "642",

pages = "34--39",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Ductility of Mo-12Si-8.5B alloys doped with lanthanum oxide by the liquid-liquid doping method

AU - Li, Wenhu

AU - Zhang, Guojun

AU - Wang, Shixiong

AU - Li, Bin

AU - Sun, Jun

PY - 2015/9/5

Y1 - 2015/9/5

N2 - Mo-12Si-8.5B (Mo-Si-B) alloys doped with different mass fractions (0.3 wt%, 0.6 wt%, and 0.9 wt%) of lanthanum oxide (La2O3) were prepared by liquid-liquid (L-L) doping, mechanical alloying and hot pressing sintering techniques. The observation of the microstructures of the Mo-Si-B alloys reveals that the grain sizes of the alloys were refined with the increase in La2O3 doping. The fracture toughness values of the alloys of over 10 MPa m1/2 reveal that the addition of La2O3 via the L-L doping method can obviously improve the alloy fracture toughness compared to the alloys doped with La2O3 via the solid-solid (S-S) doping method. In addition, compression tests indicate that the compression strength of the alloys was improved compared to Mo-12Si-8.5B alloys.

AB - Mo-12Si-8.5B (Mo-Si-B) alloys doped with different mass fractions (0.3 wt%, 0.6 wt%, and 0.9 wt%) of lanthanum oxide (La2O3) were prepared by liquid-liquid (L-L) doping, mechanical alloying and hot pressing sintering techniques. The observation of the microstructures of the Mo-Si-B alloys reveals that the grain sizes of the alloys were refined with the increase in La2O3 doping. The fracture toughness values of the alloys of over 10 MPa m1/2 reveal that the addition of La2O3 via the L-L doping method can obviously improve the alloy fracture toughness compared to the alloys doped with La2O3 via the solid-solid (S-S) doping method. In addition, compression tests indicate that the compression strength of the alloys was improved compared to Mo-12Si-8.5B alloys.

KW - Fine-grain strengthening

KW - Lanthanum oxide

KW - Liquid-liquid doping

KW - Mo-Si-B alloy

UR - https://www.scopus.com/pages/publications/84929465734

U2 - 10.1016/j.jallcom.2015.04.047

DO - 10.1016/j.jallcom.2015.04.047

M3 - 文章

AN - SCOPUS:84929465734

SN - 0925-8388

VL - 642

SP - 34

EP - 39

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -

Ductility of Mo-12Si-8.5B alloys doped with lanthanum oxide by the liquid-liquid doping method

Abstract

Keywords

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