Redox reaction in a Mg/Nb2O5 nanocomposite processed by high-pressure torsion

被引：2

作者：

Caires, Anderson J. ^{[1
]}

Castro, Moara M. ^{[1
]}

Montoro, Luciano A. ^{[2
]}

Isaac, Augusta ^{[1
]}

Figueiredo, Roberto B. ^{[1
]}

机构：

[1] Univ Fed Minas Gerais, Dept Met & Mat Engn, BR-31270901 Belo Horizonte, MG, Brazil

[2] Univ Fed Minas Gerais, Dept Chem, BR-31270901 Belo Horizonte, MG, Brazil

来源：

MATERIALS LETTERS | 2021年 / 303卷

关键词：

Metal matrix nanocomposite; High-pressure torsion; Magnesium; Ultrafine-grained materials; SUPERSATURATED SOLID-SOLUTIONS; TEMPERATURE DUCTILITY; MAGNESIUM; CU; CONSOLIDATION; COMPOSITE;

D O I：

10.1016/j.matlet.2021.130418

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Severe plastic deformation by high-pressure torsion can induce solid-state reactions, including redox reactions, which can affect the mechanical properties of metal matrix composites and hybrids. The present paper shows evidence of a redox reaction between magnesium and nanostructured niobium pentoxide. These chemical reactions release metallic niobium and magnesium oxide. Accordingly, aglomerations of nanocrystalline magnesium oxide is found in the magnesium matrix and a supersaturated solid solution is formed with niobium. Hardness and indentation creep tests show a minor increase in strength and decrease in strain rate sensitivity in the processed material, compared to data for pure magnesium in the literature.

引用

页数：4

共 23 条

[1] New insights on the formation of supersaturated solid solutions in the Cu-Cr system deformed by high-pressure torsion
Bachmaier, A.
Rathmayr, G. B.
Bartosik, M.
Apel, D.
Zhang, Z.
Pippan, R.
[J]. ACTA MATERIALIA, 2014, 69 : 301 - 313
[2] The formation of supersaturated solid solutions in Fe-Cu alloys deformed by high-pressure torsion
Bachmaier, A.
Kerber, M.
Setman, D.
Pippan, R.
[J]. ACTA MATERIALIA, 2012, 60 (03) : 860 - 871
[3] Consolidation of magnesium and magnesium-quasicrystal composites through high-pressure torsion
Castro, M. M.
Wolf, W.
Isaac, A.
Kawasaki, M.
Figueiredo, R. B.
[J]. LETTERS ON MATERIALS, 2019, 9 (04): : 546 - 550
[4] Mechanical mixing of Mg and Zn using high-pressure torsion
Castro, Moara M.
Montoro, Luciano A.
Isaac, Augusta
Kawasaki, Megumi
Figueiredo, Roberto B.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 869
[5] Magnesium-Based Bioactive Composites Processed at Room Temperature
Castro, Moara M.
Lopes, Debora R.
Soares, Renata B.
dos Santos, Diogo M. M.
Nunes, Eduardo H. M.
Lins, Vanessa E. C.
Pereira, Pedro Henrique R.
Isaac, Augusta
Langdon, Terence G.
Figueiredo, Roberto B.
[J]. MATERIALS, 2019, 12 (16)
[6] A magnesium-aluminium composite produced by high-pressure torsion
Castro, Moara M.
Sabbaghianrad, Shima
Pereira, Pedro Henrique R.
Mazzer, Eric M.
Isaac, Augusta
Langdon, Terence G.
Figueiredo, Roberto B.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 804 : 421 - 426
[7] Development of a magnesium-alumina composite through cold consolidation of machining chips by high-pressure torsion
Castro, Moara M.
Pereira, Pedro Henrique R.
Isaac, Augusta
Figueiredo, Roberto B.
Langdon, Terence G.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 780 : 422 - 427
[8] Processing Magnesium and Its Alloys by High-Pressure Torsion: An Overview
Figueiredo, Roberto B.
Langdon, Terence G.
[J]. ADVANCED ENGINEERING MATERIALS, 2019, 21 (01)
[9] Evidence for exceptional low temperature ductility in polycrystalline magnesium processed by severe plastic deformation
Figueiredo, Roberto B.
Sabbaghianrad, Shima
Giwa, Adenike
Greer, Julia R.
Langdon, Terence G.
[J]. ACTA MATERIALIA, 2017, 122 : 322 - 331
[10] The influence of grain size and strain rate on the mechanical behavior of pure magnesium
Figueiredo, Roberto B.
Poggiali, Flavia S. J.
Silva, Claudio L. P.
Cetlin, Paulo R.
Langdon, Terence G.
[J]. JOURNAL OF MATERIALS SCIENCE, 2016, 51 (06) : 3013 - 3024

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