Ye Hengqiang

Biography

Ye Hengqiang, former director of Shenyang Institute of Metal Research, Chinese Academy of Sciences, the Chinese Academy of Sciences solid atom imaging laboratory first, second director, researcher, the fifth academic committee and doctoral tutor. November 1991 was elected member of the Chinese Academy of Sciences. He is the sixth and seventh CPPCC Standing Committee of Liaoning Province, the chairman of the Chinese Electron Microscopy Society, the third member of the National Expert Committee of New Materials for National Hi-Tech Projects, and a member of the National Natural Science Foundation and Discipline Review Panel of the Academic Degrees Committee of the State Council. In 1990, the Chinese Academy of Sciences as an open laboratory advanced science and technology workers, was awarded the national outstanding contributions of young and middle-aged expert. He enjoys special government allowances granted by the state. Ye Hengqiang, born in July 1940, Panyu County, Guangdong Province. In 1964 February graduated from the Beijing Institute of steel physics, and then to the Institute of Metallurgy, Chinese Academy of Sciences, under the guidance of Guo Kexin crystal defect in the electron diffraction contrast imaging research. In 1968, after graduating from graduate school, has been working in the institute. 1981-1982, respectively, at the Solid State Scientific Center of the University of Arizona and the University of Antwerp, Belgium high-pressure electron microscopy center to conduct a study; 1985 1986, again to the United States Arizona State University engaged in collaborative research. In 1988, funded by the Japan Society for the Promotion of Science, went to Northeastern University to study. Ye Hengqiang mainly engaged in materials science electron microscopy. He won the third prize for National Natural Science Prize for three consecutive years, including "Study on Electronic Fine Structure and Electron Microscopy of Crystal Fine Structure", and won the third prize in 1981; "Five Symmetries and Quasi-Nitride-Vanadium Discovery" He was the second author and won the first prize in 1987. He collaborated with others on "Micro-diffraction and its Image Analysis" and won the fourth prize in 1989. He conducted a systematic exploration of the electronic diffraction geometry analysis and the structural analysis of layered crystals. The geometric analysis of lattice planes was directly solved by the analytical method. The heavy lattice analysis was used to find out the law of reciprocal reciprocal plane between two phases and the discrimination In the Ni3M alloy, two new phase-domain structures and four long-period structures were found. He is one of the earliest researchers in China to study solid atom images. The structure of SiC6 polytypes was confirmed by lattice image. He uses high-resolution imaging observation, in the orderly alloy fine structure, crystal non-uniform structure, low-dimensional material microstructure analysis, followed by original findings. Among the above results, "Low-dimensional material microstructure characterization and analysis", 1993 by the Ministry of Metallurgical Industry Science and Technology Progress Award; "Microstructure of oxide superconductor characteristics and its impact on performance," in 1994 Chinese Academy of Sciences second prize of natural sciences. He studied the structure and defects of solid materials by using solid-state atomic image technique. Four new phases and a large number of new translation domain and rotational domain structures were found in the topologically dense phase precipitated in the superalloy for a long time. This type of phase structure of the crystal structure rules. The achievements won the first prize of scientific and technological progress of CAS in 1986. He then use high-resolution electron microscopy to study the phase structure and defects of superalloys, aluminum alloys and intermetallic compounds in depth, impact and influence on the research of alloy ultra-microstructure. At the same time, he and his collaborators found that there are five symmetries that are not allowed in traditional crystallography in crystal blocks. On the basis of this, under the guidance of Guo Kexin, the discovery and study of icosahedral symmetry, quasi-symmetry and other quasicrystalline phases have contributed to our country's quasi-crystal phase experimental research in the forefront of the world. For more than a decade, a total of three academic monographs were published, nearly 200 academic papers. He has trained more than 10 PhDs and masters, of whom several have won scholarships and other awards. Academician Ye Hengqiang is now a part-time professor in the electron microscope laboratory of Peking University, leader of expert group and director of academic committee.  

Research Interest

electron microscope