Evaluation of nanoscale inhomogeneity in as-quenched state of Cu-Hf-Ti alloys

被引：6

作者：

Saida, J ^{[1
]}

Osuna, T

Inoue, A

Onuma, M

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

来源：

JOURNAL OF MATERIALS RESEARCH | 2003年 / 18卷 / 09期

关键词：

D O I：

10.1557/JMR.2003.0281

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure of the melt-spun CU60Hf30Ti10 and Cu50Hf40Ti10 alloys was investigated. The high-resolution transmission electron microscopy (HRTEM) image in the Cu60Hf30Ti10 alloy reveals the existence of nanoscale inhomogeneity, which appears to originate from nanocrystalline particles. The compositional segregation with a diameter of approximately 5 nm was detected, and its size agrees with the scale of nanocrystalline particle. Small-angle x-ray scattering measurement of the melt-spun Cu60Hf30Ti10 alloy also indicates the development of nanoscale inhomogeneity with the same size as that of nanocrystalline particles. It is found that the Cu element is enriched in and Hf element is rejected from the nanocrystalline particles. Since the melt-spun CU50Hf40Ti10 alloy, which has a similar alloy composition to that of the glassy region of melt-spun Cu60Hf30Ti10 alloy, has a homogeneous glassy structure without fringe contrast in the HRTEM image, it is suggested that the excess of Cu causes the nanoscale inhomogeneity with crystalline structure in the rapidly quenched Cu-Hf-Ti alloys.

引用

页码：2013 / 2016

页数：4

共 50 条

[1] Evaluation of nanoscale inhomogeneity in as-quenched state of Cu–Hf–Ti alloys
J. Saida
T. Osuna
A. Inoue
M. Onuma
Journal of Materials Research, 2003, 18 : 2013 - 2016
[2] Amorphous alloys in the Cu-Hf-Ti system
Choi-Yim, Haein
Conner, R. D.
JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 459 (1-2) : 160 - 162
[3] Investigation of the solidified structure of Cu-Hf-Ti alloys
Ronto, V.
Nagy, E.
Sveda, M.
Tranta, F.
Hegman, N.
SOLIDIFICATION AND GRAVITY V, 2010, 649 : 81 - +
[4] Microstructure and phase analysis by TEM in Cu-Hf-Ti alloys
Ronto, V.
Solyom, J.
Kovacs, A.
Pekker, P.
Dodony, I.
MATERIALS SCIENCE, TESTING AND INFORMATICS VI, 2013, 729 : 266 - +
[5] Structural and thermal properties of Cu-Hf-Ti bulk amorphous alloys
Ronto, V.
Nagy, E.
Sveda, M.
Roosz, A.
Tranta, F.
13TH INTERNATIONAL CONFERENCE ON RAPIDLY QUENCHED AND METASTABLE MATERIALS, 2009, 144
[6] PROPERTIES OF AS-QUENCHED AND HYDROGENATED CU-FE-TI ALLOYS
DUNLAP, RA
STROINK, G
STADNIK, ZM
DINI, K
MATERIALS SCIENCE AND ENGINEERING, 1988, 99 : 543 - 546
[7] Formation and mechanical properties of Cu-Hf-Ti bulk glassy alloys
Inoue, A
Zhang, W
Zhang, T
Kurosaka, K
JOURNAL OF MATERIALS RESEARCH, 2001, 16 (10) : 2836 - 2844
[8] High glass formability for Cu-Hf-Ti alloys with small additions of Y and Si
Figueroa, I. A.
Davies, H. A.
Todd, I.
PHILOSOPHICAL MAGAZINE, 2009, 89 (27) : 2355 - 2368
[9] Formation of Cu-Hf-Ti bulk metallic glasses
Figueroa, I.A.
Davies, H.A.
Todd, I.
Journal of Alloys and Compounds, 2007, 434-435 (SPEC. ISS.): : 164 - 166
[10] Mixing Enthalpies of Liquid Cu-Hf-Ti Alloys Studied by High-Temperature Calorimetry
Agraval, P. G.
Turchanin, M. A.
Vodopyanova, A. A.
Dreval, L. A.
POWDER METALLURGY AND METAL CERAMICS, 2018, 57 (5-6) : 344 - 348

← 1 2 3 4 5 →