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ZHANG Wenzheng

Professor Zhang together with her research group is active on experimental and theoretical study of transformation crystallography and microstructure developed from solid-state phase transformations, interfaces in crystalline materials, and microstructure design for optimizing mechanic properties of engineering metallic materials. She also teaches undergraduate course of Fundamental of Materials Science (II).

(Graduate students have developed a number of software for the O-lattice calculations. They can be given out free of charge on request.)

 Tel: 86-10-62773795


Email: zhangwz@tsinghua.edu.cn

Education Background

1978 Graduated from Department of Mechanical Engineering, Fuzhou University, Fuzhou, China.

1983 Master degree from Department of Metallic Materials Science and Engineering, Beijing University of Science and Technology, Beijing, China

1992 Ph.D. from Department of Materials Science and Engineering, McMaster University, Hamilton, Ontario

Work Resume

1978-1980, Metallography Laboratory Technician, Luzhou Machinery Plant

1984-1986, Research Engineer, The General Research Institute for Non-Ferrous Metals

1991-1994 Post-doctoral Fellow, Dept. of Materials Sci. and Eng., McMaster University

1994-1997 Research Associate, Memorial University of Newfoundland, Canada

1997-Present Associate Professor, Professor(1999-), Tsinghua University

Part-time Academic Job

Key reader, Metallurgical and Materials Transactions (2001- present)

Member of Phase Transformations Committee, ASM International (2000- present)

Member of High Education on Metallic Materials and Metallurgy Committee, Ministry of Education (2007- present)

Member of Committee of Defects in Solids, The Chinese Society of Physics (2008-present)

Research Field

 Crystallography and microstructure developed from solid-state phase transformations in metallic materials, interfaces in crystalline materials, microstructure design for engineering materials

Research Situation

 Professor Zhang leads a research group in solid state phase transformation and microstructure design (PTMD). The research activities mainly focus on systematic study of the crystallographic morphology of new phases in different materials, including experimental and theoretical study of orientation relationships, habit planes, interfacial structures and long range strain field developed from diffusional or diffussless phase transformations, with a purpose to gain in-depth understanding of the morphology of new phases developed from phase transformation in different metallic materials. Currently, her group is also working on the development of new Mg alloys with optimum properties,guided by the principle of precipitation crystallography for controlling and designing the precipitate microstructures of the alloys.

Awards And Honors

2002 Excellent Teacher Award(second place, Tsinghua University)

2003 Supervisor Award (Elected by graduate students, Tsinghua University)

2007 Excellent Paper Awards (Chinese Science Society, as second author)

Academic Achievements

 With continuous efforts to improve understanding of crystallographic morphology in microstructure of metallic materials, she has contributed to the knowledge base in the areas of phase transformation crystallography and interfacial structure. This includes the development of a systematic theoretic approach using singularity of interfacial defect structures and a set of simple rules in terms of ?g vectors for understanding the orientation relationship between product and parent phases, and crystallographic morphology of product phases. Agreement has been obtained between the applications of this approach and experimental observations from a large number of precipitation systems. She is author or co-author of over 70 refereed publications. She has given numerous invited and contributed presentations based on her research. Some recent publications are given below:

1. Zhang W.-Z. and Weatherly, G.C., (2005) “On the Crystallography of Precipitation” Prog. Mater. Sci. 50, 181-292.

2. Zhang W.-Z. (2005) “Formulas for Periodic Dislocations in General Interfaces” Appl. Phys. Lett. 86, 121919.

3. Qiu D, Shen Y.-X. and Zhang W.-Z. (2006) “An Extended Invariant Line Analysis for Fcc/Bcc Precipitation Systems" Acta Mater. 54, 339–347.

4. Ye F., Zhang W.-Z. (2006) “Dislocation Structure of Non-Habit plane of α Precipitates in a Ti-7.26wt%Cr Alloy” Acta Mater. 54, 871–879.

5. Ye F., Zhang W.-Z. and Qiu D. (2006) “A Near Coincidence Sites Modeling of Edge Facet Dislocation Structures of α Precipitates in a Ti-7.26wt%Cr Alloy” Acta Mater. 54, 5377-5384.

6. Zhang W.-Z., Qiu D., Yang X.-P., and Ye F. (2006) “Structures in Irrational Singular Interfaces” Metall. Mater. Trans. A 37, 911-927.

7. Zhang W.-Z. and Wu J. (2006) “Dislocation Description of Martensite Interface Based on Misfit Analysis” Mater. Sci. and Eng. A 438–440, 118–121.

8. Qiu D., Zhang W.-Z. (2007) “A TEM Study of the Crystallography of Austenite Precipitates in a Duplex Stainless Steel” Acta Mater. 55, 6754–6764.

9. Qiu D., Zhang W. -Z. (2008) “An Extended 'Near Coincidence Sites' Method and the Interfacial Structure of Austenite Precipitates in a Duplex Stainless Steel” Acta Mater. 56 2003–2014.

10. Wu J., Zhang W.-Z., Gu X.-F., (2009) “A Two Dimensional Analytical Approach for Phase Transformations Involving an Invariant Line Strain” Acta Mater. 57, 635-645.

11. Meng Y., Gu X.-F., Zhang W.-Z., (2010) “A study of a new type of deviation from the K-S orientation relationship in fcc/bcc transformation system” Acta Mater. 58, 2364-2375.

12. Gu X.-F. and Zhang W.-Z., (2010) “A two-dimensional analytical method for the transformation crystallography based on vector analysis” Phil. Mag. 90, 3281-3292.

13. Gu X.-F. and Zhang W.-Z., (2010) “Analytical O-line solutions to phase transformation crystallography in fcc/bcc systems” Phil. Mag. 90, 4503-4527.

14. Shi Z.-Z. and Zhang W.-Z., (2011) “A transmission electron microscopy investigation of crystallography of τ-Mg32(Al, Zn)49 precipitates in a Mg-Zn-Al alloy” Scripta Mater. 64, 201-204.

15. W.-Z. Zhang and X.-P. Yang (2011) “Identification of singular interfaces with Dg’s and its basis of the O-lattice” J. Mater. Sci., 46, 4135–4156.

16. X.-F. Gu, W. -Z. Zhang and D. Qiu (2011) “A systematic investigation of the development of the orientation relationship in an fcc/bcc system” Acta Mater. DOI: 10.1016/j.actamat.2011.04.039

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