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Wang Haipeng

2013年03月21日 09:41  点击:[]

WANG Haipeng

Haipeng Wang (H. P. Wang)

Ph.D & Asso. Professor

 

Contact

Tel: +86-29-8843-1669

E-mail: hpwang@nwpu.edu.cn

Address:    P. O. Box 624, Department of Applied Physics,

Northwestern Polytechnical University

No. 127 Youyi West Road, Xi’an City 710072 China

http://web.nwpu.edu.cn/sscience/images/content/2010/20100831150316918496.jpg

 

Education

l  09.2003~04.2008

Ph.D. in Materials Physics and Chemistry, Northwestern Polytechnical University (NPU)

Supervisor: Prof. & Dr. Bingbo Wei

Dissertation title: Thermophysical Properties and Rapid Solidification of Undercooled Liquid Ni/Fe-Based Alloys

l  09.2001~04.2004

Master in Materials Physics and Chemistry, NPU

Supervisor: Prof. & Dr. Bingbo Wei

Dissertation title: Thermophysical Properties and Core-Shell Solidification Microstructure of Highly Undercooled Alloy Melts

l  08.1997~07.2001

Bachelor in Materials science and engineering, NPU

Professional Record

2004~2006, Assistant, NPU, Rapid solidification of monotectic alloys

2006~2009, Lecturer, NPU, Thermophysical properties and rapid solidificationof liquid alloys

2009~Present, Associate professor, NPU, Properties and structure of liquid alloys

Referee:  Journal of Physics: Condensed Matter since 2008

Journal of Physics: D: Applied Physics since 2008

Chinese Physics Letters since 2009

Selected Honors and Awards

l  2010, Award Nomination of Chinese National Excellent Doctoral Dissertation

l  2010, Shaanxi Province New Star of Science & Technology for Young Scientists

l  2009, New Century Excellent Talents of Chinese National Ministry of Education

l  2006, Science & Technology Award of Chinese National Ministry of Education

l  2008, NPU Excellent Personnel Supporting Project of Aoxiang Star

l  2008, NPU Outstanding Young Teachers

l  2004, Shaanxi Province Outstanding Postgraduates

l  2004, NPU Model of Merit Postgraduates

l  2004~2008, NPU Doctorate Foundation

Research Interests

Almost all materials are prepared from liquids. Liquid alloys can be undercooled below the liquidus temperatures under some special conditions, and keep in the state of liquid. Both the thermophysical properties and rapid solidification of highly undercooled liquid alloys are the important subjects in the field of space materials science. The materials investigated include Ni, Cu, Co, Co-Si, Ti-Al, Fe-Cu, Fe-Cu-Mo, Ni-Si, Ni-Pb, Ni-Cu-Pb, Ni-Cu-Co, Ni-Cu-Fe, Ni-Cu-Fe-Co, Ni-Cu-Fe-Co-Sn-Ge, etc.

1. Thermophysical Properties and Structure of Metastable Undercooled Liquid Alloys

The thermophysical properties are essential for both rapid solidification and liquid physics. The properties, including surface tension, specific heat, viscosity, diffusion coefficient, density, etc, have been experimentally measured by electromagnetic levitation technique and theoretically calculated by molecular dynamics method. The structure of liquid alloys is described by pair distribution function, coordinate number, and clusters, etc.

 http://web.nwpu.edu.cn/sscience/images/content/2011/20111024121038358497.jpg

Fig. 1 Measured and calculated surface tension of liquid Ni-Si alloy

2. Rapid Solidification of Metastable Undercooled Liquid Alloys

It focuses on the phase separation of monotectic alloys, microstructure, dendritic growth, and solute distribution, etc. We concentrate on the relationship of the microstructure dependent on undercooling, microgravity level and container state.

http://web.nwpu.edu.cn/sscience/images/content/2011/20111024121722911502.gif

Fig.2 Phase separation microstructure achieved by drop tube experiment

 

3. Computational Materials Science

Usually the thermophysical properties can be obtained by three approaches: empirical estimation, experimental measurement, and theoretical prediction. Experimental measurement is the best way to get reliable data. However, the properties are hard to measure due to the metastability of undercooled state. For most composition liquid alloys, it is not possible to obtain their properties only by experimental measurements. Therefore, theoretical prediction becomes a desirable approach to meet the needs of plentiful data. We focus on the calculation by molecular dynamics method to calculate the surface tension, specific heat, density, enthalpy, and structure, and phase field method is also employed to study the solidification process.

Selected Publications

1.        Wang H. P. and Wei B. (2008): Theoretical prediction and experimental evidence for thermodynamic property of metastable liquid Fe-Cu-Mo ternary alloys. Applied physics letters93, 171904-1~3. (SCI, EI, If=4.308)

2.        Wang H. P., Yao W. J. and Wei B. (2006): Remarkable solute trapping within rapidly growing dendrites. Applied physics letters 89, 201905-1~3. (SCI, EI, If=4.308)

3.        Wang H. P., Cao C. D. and Wei B. (2004): Thermophysical properties of a highly superheated and undercooled Ni-Si alloy melt. Applied physics letters 84, 4062-4064.(SCI, EI, If=4.308)

4.        Wang H. P., Yao W. J., Cao C. D. and Wei B. (2004): Surface tension of superheated and undercooled liquid Co–Si alloy. Applied physics letters 85, 3414-3416. (SCI, EI, If=4.308)

5.        Wang H. P., Luo B. C. and Wei B. (2008): Molecular dynamics calculation of thermophysical properties for a highly reactive liquid. Physical review E 78, 041204-1~6. (SCI, EI, If=2.5)

6.        Wang H. P., Chang J. and Wei B. (2009): Measurement and calculation of surface tension for undercooled liquid Nickel and its alloy. Journal of applied physics106, 033506-1~4. (SCI, EI, If=2.3)

7.        Wang H. P., Luo B. C., Qin T., Chang J. and Wei B. (2008): Surface tension of liquid ternary Fe-Cu-Mo alloys measured by electromagnetic levitation drop oscillating method. Journal of chemical physics 129, 124706-1~6. (SCI, EI, If=3.0)

8.        Wang H. P. and Wei B. (2009): Thermophysical properties of stable and metastable liquid Copper and Nickel by molecular dynamics simulation. Applied physics A 95, 661-665. (SCI, If=1.8)

9.        Wang H. P., Chang J. and Wei B. (2010): Density and related thermophysical properties of metastable liquid Ni-Cu-Fe ternary alloys. Physics letters A 374, 2489-2493. (SCI, If=2.2)

10.    Wang H. P. and Wei B. (2010): Thermophysical properties and structure of stable and metastable liquid Cobalt. Physics letters A 374, 1083-1087. (SCI, If=2.2)

11.    Wang H. P. and Wei B. (2009): Thermophysical property of undercooled liquid binary alloy composed of metallic and semiconductor elements. Journal of physics D: applied physics 42, 035414-1~6. (SCI, If=2.2)

12.    Wang H. P. and Wei B. (2008): Experimental determination and molecular dynamics simulation of specific heat for high temperature undercooled liquid. Philosophical magazine letters 88, 813-819. (SCI, EI, If=1.9)

13.    Wang H. P., Luo B. C., Chang J. and Wei B. (2007): Specific heat and related thermophysical properties of liquid Fe-Cu-Mo alloy. Science in China G 50, 397-406. (SCI, EI, If=1.0)

14.    Wang H. P. and Wei B. (2005): Surface tension and specific heat of Ni70.2Si29.8 alloy. Chinese science bulletin 50, 945-949. (SCI)

15.    Wang H. P., Chang J., Luo B. C. and Wei B. (2007): Determination of the surface tension of liquid Fe77.5Cu13Mo9.5 ternary monotectic alloy. Chinese physics letters 24, 504-507. (SCI)

16.    Zhou K., Wang H. P., Chang J. and Wei B. (2010): Surface tension of substantially undercooled liquid Ti-Al alloy. Philosophical magazine letters 90, 455-462. (SCI, EI, If=1.9)

17.    Luo B. C., Wang H. P. and Wei B. (2009): Specific heat, enthalpy, and density of undercooled liquid Fe-Si-Sn alloy. Philosophical magazine letters 89, 527-533. (SCI, EI, If=1.9)

18.    Chang J., Wang H. P. and Wei B. (2008): Rapid dendritic growth within an undercooled Ni-Cu-Fe-Sn-Ge quinary alloyPhilosophical magazine letters 88, 821-828. (SCI, EI, If=1.9)

19.    Luo B. C., Wang H. P. and Wei B. (2009): Phase field simulation of monotectic transformation for liquid Ni-Cu-Pb alloys. Chinese science bulletin 54, 183-188. (SCI)

20.    Hu L., Wang H. P., Xie W. J. and Wei B. (2010): Electrostatic levitation under single-axis feedback control condition. Science China, physics, mechanics & astronomy 53, 1438-1444. (SCI, EI, If=1.0)

 

 Update: Mar 22, 2013

 

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