Alloying behavior and thermal stability of mechanically alloyed nano AlCoCrFeNiTi high-entropy alloy

被引：37

作者：

Shivam, Vikas ^{[1
]}

Shadangi, Yagnesh ^{[1
]}

Basu, Joysurya ^{[1
]}

Mukhopadhyay, Nilay Krishna ^{[1
]}

机构：

[1] Indian Inst Technol BHU, Dept Met Engn, Varanasi 221005, Uttar Pradesh, India

来源：

JOURNAL OF MATERIALS RESEARCH | 2019年 / 34卷 / 05期

关键词：

mechanical alloying; high-entropy alloys; thermal stability; microwave sintering; B2; phase; SOLID-SOLUTION; ANNEALING TREATMENT; SINTERING METHOD; PHASE EVOLUTION; MICROSTRUCTURE; FUNDAMENTALS; ELEMENTS; TI;

D O I：

10.1557/jmr.2019.5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this investigation, we have reported the alloying behavior, phase evolution, and thermal stability of equiatomic AlCoCrFeNiTi high-entropy alloy (HEA). The 40 h milled powder shows good chemical homogeneity with agglomerated particles varying in the range of similar to 3-18 mu m. The formation of a nanostructured single-phase BCC (a = 2.85 +/- 0.01 angstrom) was observed along with the minor tungsten carbide (WC) phase that formed due to contamination during milling. Thermal stability of the alloy has been studied using dynamic differential scanning calorimetry (DSC) thermogram and in situ X-ray diffraction. It has been found that this HEA is stable up to 600 degrees C (873 K). Consolidated samples at 1000 degrees C (1273 K) showed the transformation of body centered cubic (BCC) phase into the B2 (a = 2.87 +/- 0.03 angstrom) phase co-existing with minor hexagonal WC (a = 2.90 angstrom, c = 2.83 angstrom) phase.

引用

页码：787 / 795

页数：9

共 35 条

[21] Effect of W and Zr on structural, thermal and magnetic properties of AlCoCrCuFeNi high entropy alloy [J].

Tariq, N. H. ;

Naeem, M. ;

Hasan, B. A. ;

Akhter, J. I. ;

Siddique, M. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 556 :79-85

[22] Microwave processing: fundamentals and applications [J].

Thostenson, ET ;

Chou, TW .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 1999, 30 (09) :1055-1071

[23] Synthesis and characterization of nanocrystalline AlFeTiCrZnCu high entropy solid solution by mechanical alloying [J].

Varalakshmi, S. ;

Kamaraj, M. ;

Murty, B. S. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 460 (1-2) :253-257

[24] Microwave assisted synthesis of Si-modified Mn25FexNi25Cu(50-x) high entropy alloys [J].

Veronesi, Paolo ;

Colombini, Elena ;

Rosa, Roberto ;

Leonelli, Cristina ;

Rosi, Fabrizio .

MATERIALS LETTERS, 2016, 162 :277-280

[25] Mechanical alloying and spark plasma sintering of CoCrFeNiMnAl high-entropy alloy [J].

Wang, Chao ;

Ji, Wei ;

Fu, Zhengyi .

ADVANCED POWDER TECHNOLOGY, 2014, 25 (04) :1334-1338

[26] Microstructure and compressive properties of AlCrFeCoNi high entropy alloy [J].

Wang, Y. P. ;

Li, B. S. ;

Ren, M. X. ;

Yang, C. ;

Fu, H. Z. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 491 (1-2) :154-158

[27] Prediction of high-entropy stabilized solid-solution in multi-component alloys [J].

Yang, X. ;

Zhang, Y. .

MATERIALS CHEMISTRY AND PHYSICS, 2012, 132 (2-3) :233-238

[28] Alloy Design Strategies and Future Trends in High-Entropy Alloys [J].

Yeh, Jien-Wei .

JOM, 2013, 65 (12) :1759-1771

[29] 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

[30] Characterization of nanocrystalline CoCrFeNiTiAl high-entropy solid solution processed by mechanical alloying [J].

Zhang, K. B. ;

Fu, Z. Y. ;

Zhang, J. Y. ;

Wang, W. M. ;

Lee, S. W. ;

Niihara, K. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 495 (01) :33-38

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