She is the main academic leader in the field of cryogenic and nuclear structural materials in China. Since 82 years, he has been in charge of four national key scientific and technological projects in the five-year plan, completed five strength grades of hydrogen-resistant steel series, and was responsible for alloy composition design, heat treatment and phase identification, and put forward scientific ideas, technical routes and organizational implementation. Mainly engaged in special alloy preparation process and computer simulation. Responsible for the foundation work of precision pipeline. 1993 was elected as an academician of China Academy of Sciences. In the early research of high Mn austenitic low temperature steel, the phase diagram and phase identification method of Fe-Mn-Al system were made. It was found that there was antiferromagnetic transformation at low temperature, and the nucleation and growth of E martensite in Fe-Mn alloy followed stacking fault and polar axis mechanism, which solved the problem that only theoretical speculation had not been confirmed by experiments for decades, and provided a basis for the development of ultra-low temperature high strength nonmagnetic steel. This achievement won the third prize of 1982 National Natural Science Award. Presided over tackling key problems of hydrogen-resistant pressure vessel steel, developed hydrogen-resistant steel 1, 2 and 3 grades, and passed the national test.

He presided over the research of precipitation strengthening hydrogen embrittlement resistant alloy, which passed the national appraisal in 1995. Published more than 50 academic papers 12, * * * won provincial and ministerial awards12.

Major achievements

Systematic and creative scientific and technological achievements have been made in the diffusion and infiltration behavior of metallic hydrogen, the interaction between hydrogen and low temperature on materials, the correlation between hydrogen and low temperature on martensite transformation, the alloy transformation behavior under microgravity and the tackling of a series of new steel grades. 1980 won the third prize of major achievements of the commission of science, technology and industry for national defense.

1987, second prize of national scientific and technological progress.

199 1 year, second prize of national scientific and technological progress.

1996, the first prize of scientific and technological progress of China Academy of Sciences.

Published more than 50 academic papers 12, * * * won provincial and ministerial awards12. Its main achievements and contributions are:

1. Many novel academic viewpoints and important inventions and discoveries in the basic theory, experiment, research and practice of engineering materials application have had a far-reaching impact at home and abroad. It was the first to put forward the technical route of high-pressure gas-phase hot charging of hydrogen, and created a brand-new research system of low-temperature and high-pressure hydrogen-blocking materials in China, and made systematic and creative scientific and technological achievements in the diffusion and permeation behavior of metallic hydrogen, the interaction between hydrogen and low temperature on materials, the correlation between hydrogen and low temperature on martensitic transformation, the alloy phase transformation behavior under microgravity conditions, and a series of new steel grades.

2. The hydrogen diffusion coefficient and permeability of 83-573K austenitic alloy were systematically studied. Metallographic identification of ε phase and α′ martensite in Fe-Mn alloy was systematically carried out, and a metallographic low temperature stage for in-situ observation of martensite transformation was pioneered. The polar axis mechanism of martensite nucleation and stacking fault overlapping was observed for the first time in the world by low temperature electron microscope. The properties and microstructure stability of Fe-Mn-Al low temperature steel 300～20K were measured. In cooperation with others, the phase diagram of Fe-rich Mn-Al was made for the first time by combining electron probe and metallographic technology, with 12 isothermal sections, and 1982 won the third prize of the National Natural Science Award. The systematic study of ultra-low temperature and high strength nonmagnetic stainless steel shows that there is an antiferromagnetic transition point Tn in Mn austenitic steel in the temperature range of 300 ~ 4K, and it is found that Mn is the only element that can increase the Tn point and decrease the martensite point Ms, which has important theoretical value and practical significance. 1980 won the third prize of major achievements of the commission of science, technology and industry for national defense.

High purity hydrogen

3. Organized and undertook the national key research project "Hydrogen-resistant pressure vessel steel" in the Sixth Five-Year Plan, put forward the compositions of two kinds of steels with σ0.2 of 200 MPa and 400Mpa, created a brand-new experimental system including high-pressure high-purity hot charging, high-purity hydrogen analysis, gas-phase hydrogen permeation and diffusion, fission expansion and static stretching, determined the technological system of the whole process of smelting, processing and heat treatment, and established the evaluation method of hydrogen damage of samples.

4. Organized and undertook the national key project "High-strength hydrogen embrittlement resistant steel", put forward Fe-C-Ni-Mn-N steel with high nitrogen content and narrow smelting range as the main target, carried out the precipitation law and phase identification of nitride and other phases, put forward a reasonable heat treatment system, solved a series of technical problems, explored the hydrogen distribution law of steel section with engineering thickness, and gave the evaluation data of high-pressure hydrogen charging performance. This grade is divided into 18.

5. The organization undertook the precipitation strengthening hydrogen embrittlement resistant alloy in the Eighth Five-Year Plan project, 1995 passed the national appraisal, and 1996 won the first prize of scientific and technological progress of China Academy of Sciences. It is planned to organize major projects of the Chinese Academy of Sciences, such as low segregation alloy engineering, construction of high-tech enterprise groups, national engineering research center for high-performance homogeneous alloys, and research and development center for northern new materials, and cultivate a large number of scientific and technological talents, forming a high-level academic echelon with reasonable structure.