Crystallization Kinetics of 50% W Particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> Metallic Glass Matrix Composite
The crystallization kinetics of the 50% W particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> metallic glass matrix composite were studied by differential scanning calorimetry (DSC), X-ray diffracti...
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MDPI AG
2018-12-01
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| Online Access: | https://www.mdpi.com/2075-4701/8/12/1011 |
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| author | Xiaohong Su Huie Hu Xiaodong Kong Zhou Lu |
| author_facet | Xiaohong Su Huie Hu Xiaodong Kong Zhou Lu |
| author_sort | Xiaohong Su |
| collection | DOAJ |
| description | The crystallization kinetics of the 50% W particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> metallic glass matrix composite were studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD), and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS). The results showed that the crystallization and the glass transition of the composite both have a kinetic effect. The characteristic temperatures <i>T<sub>g</sub></i> and <i>T<sub>x</sub></i> of the composite are linearly related to the natural logarithm of the heating rate (ln<i>φ</i>), and the presence of W particles increases the dependence of the glass transition on the heating rate. With the addition of W particles, the viscosity of the amorphous matrix in the supercooled liquid region increases, which hinders the spread and migration of the alloy elements and causes the thermal stability of the supercooled liquid to improve. In the isothermal crystallization, the mode of nucleation and the growth process of the crystal changes with the annealing temperature. The Avrami exponent with the crystallized fraction at 698 K was about 2.5 in the middle stage of the crystallization, implying three-dimensional growth with a constant nucleation rate. |
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| spelling | doaj.art-ae0be6b939514ff3acf5d601239488da2022-12-22T03:12:54ZengMDPI AGMetals2075-47012018-12-01812101110.3390/met8121011met8121011Crystallization Kinetics of 50% W Particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> Metallic Glass Matrix CompositeXiaohong Su0Huie Hu1Xiaodong Kong2Zhou Lu3Department of Basic Course, Naval University of Engineering, Wuhan 430033, ChinaDepartment of Basic Course, Naval University of Engineering, Wuhan 430033, ChinaDepartment of Basic Course, Naval University of Engineering, Wuhan 430033, ChinaDepartment of Basic Course, Naval University of Engineering, Wuhan 430033, ChinaThe crystallization kinetics of the 50% W particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> metallic glass matrix composite were studied by differential scanning calorimetry (DSC), X-ray diffraction (XRD), and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS). The results showed that the crystallization and the glass transition of the composite both have a kinetic effect. The characteristic temperatures <i>T<sub>g</sub></i> and <i>T<sub>x</sub></i> of the composite are linearly related to the natural logarithm of the heating rate (ln<i>φ</i>), and the presence of W particles increases the dependence of the glass transition on the heating rate. With the addition of W particles, the viscosity of the amorphous matrix in the supercooled liquid region increases, which hinders the spread and migration of the alloy elements and causes the thermal stability of the supercooled liquid to improve. In the isothermal crystallization, the mode of nucleation and the growth process of the crystal changes with the annealing temperature. The Avrami exponent with the crystallized fraction at 698 K was about 2.5 in the middle stage of the crystallization, implying three-dimensional growth with a constant nucleation rate.https://www.mdpi.com/2075-4701/8/12/1011crystallization kineticsW particlesmetallic glass matrix compositethermal stability |
| spellingShingle | Xiaohong Su Huie Hu Xiaodong Kong Zhou Lu Crystallization Kinetics of 50% W Particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> Metallic Glass Matrix Composite Metals crystallization kinetics W particles metallic glass matrix composite thermal stability |
| title | Crystallization Kinetics of 50% W Particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> Metallic Glass Matrix Composite |
| title_full | Crystallization Kinetics of 50% W Particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> Metallic Glass Matrix Composite |
| title_fullStr | Crystallization Kinetics of 50% W Particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> Metallic Glass Matrix Composite |
| title_full_unstemmed | Crystallization Kinetics of 50% W Particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> Metallic Glass Matrix Composite |
| title_short | Crystallization Kinetics of 50% W Particles/Zr<sub>41.2</sub>Ti<sub>13.8</sub>Cu<sub>12.5</sub>Ni<sub>10</sub>Be<sub>22.5</sub> Metallic Glass Matrix Composite |
| title_sort | crystallization kinetics of 50 w particles zr sub 41 2 sub ti sub 13 8 sub cu sub 12 5 sub ni sub 10 sub be sub 22 5 sub metallic glass matrix composite |
| topic | crystallization kinetics W particles metallic glass matrix composite thermal stability |
| url | https://www.mdpi.com/2075-4701/8/12/1011 |
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