Thermomagnetic analysis of FeCoCrxNi alloys: Magnetic entropy of high-entropy alloys

被引：95

作者：

Lucas, M. S. ^{[1
,2
]}

Belyea, D. ^{[3
]}

Bauer, C. ^{[3
]}

Bryant, N. ^{[1
,4
]}

Michel, E. ^{[1
,4
]}

Turgut, Z. ^{[1
,5
]}

Leontsev, S. O. ^{[1
,6
]}

Horwath, J. ^{[1
]}

Semiatin, S. L. ^{[1
]}

McHenry, M. E. ^{[7
]}

Miller, C. W. ^{[3
]}

机构：

[1] USAF, Res Lab, Wright Patterson AFB, OH 45433 USA

[2] UTC Inc, Dayton, OH 45432 USA

[3] Univ S Florida, Dept Phys, Tampa, FL 33620 USA

[4] Wright State Univ, Dayton, OH 45435 USA

[5] UES Inc, Wright Patterson AFB, OH 45433 USA

[6] Univ Dayton, Res Inst, Dayton, OH 45469 USA

[7] Carnegie Mellon Univ, Dept Mat Sci & Engn, Pittsburgh, PA 15213 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 17期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.4798340

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The equimolar alloy FeCoCrNi, a high-entropy alloy, forms in the face-centered-cubic crystal structure and has a ferromagnetic Curie temperature of 130 K. In this study, we explore the effects of Cr concentration, cold-rolling, and subsequent heat treatments on the magnetic properties of FeCoCrxNi alloys. Cr reductions result in an increase of the Curie temperature, and may be used to tune the T-C over a very large temperature range. The magnetic entropy change for a change in applied field of 2T is Delta S-m = -0.35 J/(kg K) for cold-rolled FeCoCrNi. Cold-rolling results in a broadening of Delta S-m, where subsequent heat treatment at 1073 K sharpens the magnetic entropy curve. In all of the alloys, we find that upon heating (after cold-rolling) there is a re-entrant magnetic moment near 730 K. This feature is much less pronounced in the as-cast samples (without cold-rolling) and in the Cr-rich samples, and is no longer observed after annealing at 1073 K. Possible origins of this behavior are discussed. (C) 2013 American Institute of Physics.

引用

页数：3

共 11 条

[1]

[Anonymous], 1965, PHYS PRINCIPLES MAGN

[2] Microstructure, thermophysical and electrical properties in AlxCoCrFeNi (0≤ x≤2) high-entropy alloys [J].

Chou, Hsuan-Ping ;

Chang, Yee-Shyi ;

Chen, Swe-Kai ;

Yeh, Jien-Wei .

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2009, 163 (03) :184-189

[3] Absence of long-range chemical ordering in equimolar FeCoCrNi [J].

Lucas, M. S. ;

Wilks, G. B. ;

Mauger, L. ;

Munoz, J. A. ;

Senkov, O. N. ;

Michel, E. ;

Horwath, J. ;

Semiatin, S. L. ;

Stone, M. B. ;

Abernathy, D. L. ;

Karapetrova, E. .

APPLIED PHYSICS LETTERS, 2012, 100 (25)

[4] Magnetic and vibrational properties of high-entropy alloys [J].

Lucas, M. S. ;

Mauger, L. ;

Munoz, J. A. ;

Xiao, Yuming ;

Sheets, A. O. ;

Semiatin, S. L. ;

Horwath, J. ;

Turgut, Z. .

JOURNAL OF APPLIED PHYSICS, 2011, 109 (07)

[5] Magnetocaloric effect and magnetic refrigeration [J].

Pecharsky, VK ;

Gschneidner, KA .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :44-56

[6] Overview of Amorphous and Nanocrystalline Magnetocaloric Materials Operating Near Room Temperature [J].

Ucar, Huseyin ;

Ipus, John J. ;

Franco, V. ;

McHenry, M. E. ;

Laughlin, D. E. .

JOM, 2012, 64 (07) :782-788

[7] Solid Solution or Intermetallics in a High-Entropy Alloy [J].

Wang, Yan Ping ;

Li, Bang Sheng ;

Fu, Heng Zhi .

ADVANCED ENGINEERING MATERIALS, 2009, 11 (08) :641-644

[8] Nanostructured high-entropy alloys with multiple principal elements: Novel alloy design concepts and outcomes [J].

Yeh, JW ;

Chen, SK ;

Lin, SJ ;

Gan, JY ;

Chin, TS ;

Shun, TT ;

Tsau, CH ;

Chang, SY .

ADVANCED ENGINEERING MATERIALS, 2004, 6 (05) :299-303

[9] 550 DEGREES C CHANGE OF FECO SUPERLATTICE ALLOY [J].

YOKOYAMA, T ;

TAKEZAWA, T ;

HIGASHIDA, Y .

TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS, 1971, 12 (01) :30-+

[10]

Yokoyama T., 1957, J JAPAN I METALS, V21, P321

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