Defects in High Entropy Alloy HfNbTaTiZr Prepared by High Pressure Torsion

被引：21

作者：

Lukac, F. ^{[1
,2
]}

Dudr, M. ^{[1
]}

Cizek, J. ^{[2
]}

Harcuba, P. ^{[2
]}

Vlasak, T. ^{[2
]}

Janecek, M. ^{[2
]}

Kuriplach, J. ^{[2
]}

Moon, J. ^{[3
]}

Kim, H. S. ^{[3
]}

Zyka, J. ^{[4
]}

Malek, J. ^{[4
]}

机构：

[1] CAS, Inst Plasma Phys, Slovankou 3, Prague 18200, Czech Republic

[2] Charles Univ Prague, Fac Math & Phys, V Holesovickach 2, CR-18000 Prague 8, Czech Republic

[3] POSTECH, Dept Mat Sci & Engn, Pohang 790784, South Korea

[4] UJP PRAHA As, Kaminkou 1345, Prague 15600, Czech Republic

来源：

ACTA PHYSICA POLONICA A | 2018年 / 134卷 / 03期

基金：

新加坡国家研究基金会;

关键词：

D O I：

10.12693/APhysPolA.134.891

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High entropy alloy HfNbTaTiZr was successfully processed by severe plastic deformation using high pressure torsion (HPT) and ultrafine grained microstructure was achieved. The microstructure of HPT-deformed HfNbTaTiZr alloy was characterized by X-ray diffraction and compared with conventionally cast ingots. The lattice defects introduced by HPT processing were characterized by positron annihilation spectroscopy. The X-ray diffraction profiles of HTP-deformed samples were extremely broadened due to small sizes of coherently diffracting domains and a high microstrain introduced by severe plastic deformation.

引用

页码：891 / 894

页数：4

共 13 条

[1] The asset of ultra-fast digitizers for positron-lifetime spectroscopy
Becvár, F
Cízek, J
Procházka, I
Janotová, J
[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2005, 539 (1-2) : 372 - 385
[2] Effects of high shearing stress combined with high hydrostatic pressure
Bridgman, PW
[J]. PHYSICAL REVIEW, 1935, 48 (10): : 825 - 847
[3] Evolution of defects in copper deformed by high-pressure torsion
Cizek, J.
Janecek, M.
Srba, O.
Kuzel, R.
Barnovska, Z.
Prochazka, I.
Dobatkin, S.
[J]. ACTA MATERIALIA, 2011, 59 (06) : 2322 - 2329
[4] Coelho A. A., 2016, TOPAS
[5] Microstructural investigation of plastically deformed Ti20Zr20Hf20Nb20Ta20 high entropy alloy by X-ray diffraction and transmission electron microscopy
Dirras, G.
Gubicza, J.
Heczel, A.
Lilensten, L.
Couzinie, J. -P.
Perriere, L.
Guillot, I.
Hocini, A.
[J]. MATERIALS CHARACTERIZATION, 2015, 108 : 1 - 7
[6] CORRECTION OF INTENSITIES FOR PREFERRED ORIENTATION IN POWDER DIFFRACTOMETRY - APPLICATION OF THE MARCH MODEL
DOLLASE, WA
[J]. JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1986, 19 (pt 4) : 267 - 272
[7] Ultra fine grained Ti prepared by severe plastic deformation
Lukac, F.
Cizek, J.
Knapp, J.
Prochazka, I.
Zhanal, P.
Islamgaliev, R. K.
[J]. INTERNATIONAL WORKSHOP ON POSITRON STUDIES OF DEFECTS 2014, 2016, 674
[8] Microstructure and properties of a refractory high-entropy alloy after cold working
Senkov, O. N.
Semiatin, S. L.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 649 : 1110 - 1123
[9] Microstructure and room temperature properties of a high-entropy TaNbHfZrTi alloy
Senkov, O. N.
Scott, J. M.
Senkova, S. V.
Miracle, D. B.
Woodward, C. F.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (20) : 6043 - 6048
[10] AN ALTERNATIVE INTERPRETATION OF POSITRON-ANNIHILATION IN DISLOCATIONS
SMEDSKJAER, LC
MANNINEN, M
FLUSS, MJ
[J]. JOURNAL OF PHYSICS F-METAL PHYSICS, 1980, 10 (10): : 2237 - 2249

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