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Li Heng, materials science and engineering, professor, academician of Chinese Academy of Engineering Li Heng, materials science and engineering, professor, academician of Chinese Academy of Engineering . graduated from Northwestern University, Carnegie Institute of Technology, Master of the University of Pennsylvania Dr.
Chinese nuclear material and the metal physics expert and former director of the Tsinghua University, as a part - timer, a researcher with the Academy of Sciences Atomic Energy, Materials and Engineering Science of NSFC, director of the Academic Degrees Committee of Discipline, member of the State Science and Technology Invention Awards Committee metallurgical group leader, Li is on the Board of the National Prize for Natural Sciences, a Member of the Standing Committee of the Chinese Society for Metal (CSM Materials Science Association,"Science Progress"," Chinese Journal of Material Research "editor Chinese nuclear material and the metal physics expert and former director of the Tsinghua University, as a part - timer, a researcher with the Academy of Sciences Atomic Energy, Materials and Engineering Science of NSFC, director of the Academic Degrees Committee of Discipline, member of the State Science and Technology Invention Awards Committee metallurgical group leader, Li is on the Board of the National Prize for Natural Sciences, a Member of the Standing Committee of the Chinese Society for Metal (CSM Materials Science Association,"Science Progress"," Chinese Journal of Material Research "editor . Tsinghua Institute of Materials, National Science Fund for Distinguished Young Scholars, the deputy director of China Tsinghua Institute of Materials, National Science Fund for Distinguished Young Scholars, the deputy director of China .
nuclear material, Vice Director of China Materials Research Society, International Union of Materials Research Society of China and Chairman of the Committee on International Materials Research Society, vice - president of the nuclear material, Vice Director of China Materials Research Society, International Union of Materials Research Society of China and Chairman of the Committee on International Materials Research Society, vice - president of the . in the earliest performing plastic deformation of the single crystal beryllium; beryllium and clarify the mechanism of brittle nature and in the earliest performing plastic deformation of the single crystal beryllium; beryllium and clarify the mechanism of brittle nature and .
China's nuclear reactor with a tube which is provided with the hot - rolling process in which hydride distribution and relationship,Nuclear fuel micro core trial and charged particle beam radiation effect of early China and of nuclear material and for the cause of education contributed to this China's nuclear reactor with a tube which is provided with the hot - rolling process in which hydride distribution and relationship,Nuclear fuel micro core trial and charged particle beam radiation effect of early China and of nuclear material and for the cause of education contributed to this . is the earliest to develop new ion - beam material modification by experts in the field, one of the earliest leaders in carrying out ion implantation modification of metal materials research and, above all, to the guidance, we have developed the characteristics of the ion beam in which interfacial mixing of simulator is the earliest to develop new ion - beam material modification by experts in the field, one of the earliest leaders in carrying out ion implantation modification of metal materials research and, above all, to the guidance, we have developed the characteristics of the ion beam in which interfacial mixing of simulator .
he presided over the attend the nation's first ion beam assisted deposition equipment and used it to conduct a series of elemental nano multilayer film and film study he presided over the attend the nation's first ion beam assisted deposition equipment and used it to conduct a series of elemental nano multilayer film and film study . in Chinese for the first time that the sol - precipitation developed UO2 fuel microsphere,and using a charged particle beam; the material had an in - depth study of the effects of radiation damage in Chinese for the first time that the sol - precipitation developed UO2 fuel microsphere,and using a charged particle beam; the material had an in - depth study of the effects of radiation damage .
heap of zirconium alloy cladding tube of the hydride in cold - rolling process and the orientation distribution and texture, as in the actual production of zirconium tubes to prevent brittle fracture which provides the scientific basis for the foundation and control heap of zirconium alloy cladding tube of the hydride in cold - rolling process and the orientation distribution and texture, as in the actual production of zirconium tubes to prevent brittle fracture which provides the scientific basis for the foundation and control . obtained national and provincial - level award obtained national and provincial - level award .
in ion - beam material modification) has published more than 200 papers in two monographs in ion - beam material modification) has published more than 200 papers in two monographs . .
since 1989 and was undertaken under the leadership of natural biological material and structure of bionic research since 1989 and was undertaken under the leadership of natural biological material and structure of bionic research . has been awarded the national provincial or ministerial - level awards in four different directions on the published research papers on typical has been awarded the national provincial or ministerial - level awards in four different directions on the published research papers on typical .
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Development Course
In 1942, at the Northwest Institute of Mining and Metallurgy of graduated (B.A.), in 1947, the U.S. - based Institute of Technology in Pittsburgh, Mr. Carney graduated from Department of Metallurgy (MSc), in 1953, graduated from the University of Pennsylvania, Philadelphia (Dr.) in April 1955, 1957, he served as Associate Professor at Department of Mechanical Engineering, Tsinghua University, the director of the office in April 1955, 1957, he served as Associate Professor at Department of Mechanical Engineering, Tsinghua University, the director of the office .
1957 to August 1988, the Ministry of Health and Tsinghua University associate professor, professor, dean, vice - dean, dean of the 1957 to August 1988, the Ministry of Health and Tsinghua University associate professor, professor, dean, vice - dean, dean of the . in 1963, 1966, the Academy of Sciences Atomic Energy Research Institute and an adjunct investigator in 1963, 1966, the Academy of Sciences Atomic Energy Research Institute and an adjunct investigator .
1979 - 1997,Adjunct Materials, Tsinghua university institute of 1979 - 1997,Adjunct Materials, Tsinghua university institute of . from 1986 to 1994 served as a member of the National Natural Science Foundation of China material engineering and science from 1986 to 1994 served as a member of the National Natural Science Foundation of China material engineering and science .
from 1991 to 1999, the National Chinese Committee of the National Science Foundation for Distinguished Young Scholars, deputy director of the China Materials Research Society (MRS) C - 1994 Director from 1991 to 1999, the National Chinese Committee of the National Science Foundation for Distinguished Young Scholars, deputy director of the China Materials Research Society (MRS) C - 1994 Director ., , .
was elected academician of Chinese Academy of Engineering in 1996, was elected a member of the International Research Group on Materials for the Vice - Chairman of the Federation (IUMRS) was elected academician of Chinese Academy of Engineering in 1996, was elected a member of the International Research Group on Materials for the Vice - Chairman of the Federation (IUMRS) . 1997, general of the academic committee of Tsinghua University Academy 1997, general of the academic committee of Tsinghua University Academy .
Chinese Materials Research Society, honorary director - general of the International League's executive committee Chinese Materials Research Society, honorary director - general of the International League's executive committee . material material.
Scientific Research Experience
The academician was born in 1921, in the autumn of 1948, he accepted the U.S. Office of Naval Research of the topic, with metal beryllium; beryllium as was one of the new atomic metal, attracted attention but was one of the new atomic metal, attracted attention but .
, people on the little - known very expensive, have little knowledge of the mechanical properties of metal, in particular its brittleness is , people on the little - known very expensive, have little knowledge of the mechanical properties of metal, in particular its brittleness is . as he was on trial from the single crystal beryllium, and dozens of bits of the single crystal beryllium to do science experiments, detailed observation of the deformation behavior of the single crystal beryllium as he was on trial from the single crystal beryllium, and dozens of bits of the single crystal beryllium to do science experiments, detailed observation of the deformation behavior of the single crystal beryllium .
he discovered beryllium slip system there is only one, most bits downward against the twinning deformation,This cannot provide a large amount of the deformation amount of the he discovered beryllium slip system there is only one, most bits downward against the twinning deformation,This cannot provide a large amount of the deformation amount of the . only in a proper orientation of the single crystal, it can be along one slip system is greatly deformed, exhibits good ductility; but in the most unfavourable position downward it can neither slip nor occurrence of twins, so that the compression occurs when the explosive crushing only in a proper orientation of the single crystal, it can be along one slip system is greatly deformed, exhibits good ductility; but in the most unfavourable position downward it can neither slip nor occurrence of twins, so that the compression occurs when the explosive crushing .
is beryllium crystal deformation system and the limitation of the deformation is aligned to the highly sensitive nature, such that the polycrystalline beryllium is inevitably very brittle is beryllium crystal deformation system and the limitation of the deformation is aligned to the highly sensitive nature, such that the polycrystalline beryllium is inevitably very brittle . from deformation mechanism is expounded. The brittleness of beryllium, and temperature; and this characteristic does not change
1956 Li Heng's return later in his creation of the Tsinghua University specializing in nuclear material,is the nation's nuclear cause and cultivated a number of key talent 1956 Li Heng's return later in his creation of the Tsinghua University specializing in nuclear material,is the nation's nuclear cause and cultivated a number of key talent . 1973, He using gel precipitation at the earliest in China developed uranium dioxide microspheres 1973, He using gel precipitation at the earliest in China developed uranium dioxide microspheres .
from 1974 to 1975, he lived in Northwest Institute for Nonferrous Metal Research factory for nearly a year, according to the requirements of China's external threats to the safety of reactors in a zirconium alloy cladding tube hydroxide bit to cause the brittle fracture is proposed and hosted a hydroxide of zirconium or zirconium alloy tube distribution study from 1974 to 1975, he lived in Northwest Institute for Nonferrous Metal Research factory for nearly a year, according to the requirements of China's external threats to the safety of reactors in a zirconium alloy cladding tube hydroxide bit to cause the brittle fracture is proposed and hosted a hydroxide of zirconium or zirconium alloy tube distribution study . he proposed the hydride orientation depends mainly on the tubing of the texture and processing technology, and help established pipe texture determinationproposed base orientation factor V of the concept and calculation formula for a lot of different processes, different cold - work program, sampling at different heat treatment in the intermediate and final pipe orientation factor to the measurement results of the experiments of hydrogen permeation, finally established pipe texture orientation factor V48 and hydride orientation factor F of the inter - relationship, the significance of this work is found in the thin - walled tube of zirconium hydride distribution regularity and route, to avoid the most harmful hydride zirconium tube with radial orientation, which is advantageous to change the circumferential orientation, could eventually reduce fuel cladding pipe of hydrogen embrittlement cracking tendencies,improve the safety of reactors in series in this he proposed the hydride orientation depends mainly on the tubing of the texture and processing technology, and help established pipe texture determinationproposed base orientation factor V of the concept and calculation formula for a lot of different processes, different cold - work program, sampling at different heat treatment in the intermediate and final pipe orientation factor to the measurement results of the experiments of hydrogen permeation, finally established pipe texture orientation factor V48 and hydride orientation factor F of the inter - relationship, the significance of this work is found in the thin - walled tube of zirconium hydride distribution regularity and route, to avoid the most harmful hydride zirconium tube with radial orientation, which is advantageous to change the circumferential orientation, could eventually reduce fuel cladding pipe of hydrogen embrittlement cracking tendencies,improve the safety of reactors in series in this .
engineering methods had been used engineering methods had been used . in 1978 after Li Heng has led his team to enter the metal ion beams surface modification of the new field of study, he and his collaborators published internationally co - authored over 100 papers in China have achieved many in 1978 after Li Heng has led his team to enter the metal ion beams surface modification of the new field of study, he and his collaborators published internationally co - authored over 100 papers in China have achieved many .
they systematically on the ion implantation on the steel is of complicated influence factors and degree of regularity in the study, found a series of meaningful, results published in 1983 by they systematically on the ion implantation on the steel is of complicated influence factors and degree of regularity in the study, found a series of meaningful, results published in 1983 by . this study had attracted many international experts and scholars's attention,FIG. and the curve has also been referenced many times
the US Office of Naval Research experts at the International Congress of the comprehensive report at its special mention this study "is by far the most comprehensive study of these results on the US Office of Naval Research experts at the International Congress of the comprehensive report at its special mention this study "is by far the most comprehensive study of these results on . unitary tendency of the study would be extremely useful for the" unitary tendency of the study would be extremely useful for the" .
Li Heng de etc on nitrogen ion - implanted titanium hip to increase its service life also made important contributions to Li Heng de etc on nitrogen ion - implanted titanium hip to increase its service life also made important contributions to . them not only with powerful experiment, including the body fluid in the long term wear tests to prove,And also at the international level for the first time in the human body implanted such joint them not only with powerful experiment, including the body fluid in the long term wear tests to prove,And also at the international level for the first time in the human body implanted such joint .
Spire Company of the United States admit they are determined to develop on the ion - implanted titanium prostheses played an important role in reaching Spire Company of the United States admit they are determined to develop on the ion - implanted titanium prostheses played an important role in reaching . for years afterwards, the Spire Company distributed to visiting guests, including Li Heng De et al. it is a relevant part of the curve and data
in this field for many years constituted the Spire Corporation, one of the most important industry since 1989 in this field for many years constituted the Spire Corporation, one of the most important industry since 1989 .,Professor Li Heng's attention and at the natural mineral biological and biomimetic materials ,Professor Li Heng's attention and at the natural mineral biological and biomimetic materials .
They shellfish pearl layer of the layered composite structure proceeded the meticulous observation and study They shellfish pearl layer of the layered composite structure proceeded the meticulous observation and study . also worked with on the multi - target sputtering method of the particle beam, the pearl layer and the release site is developed, which incorporates a series of heterogeneous nano multilayer film, and the total thickness is inferior to 1. m u.m multilayer film hardness and toughness is studied systematically, and these jobs have become more basic
and and . tentative; they are working on biofuels, is the use of the contents of chlorophyll in photosynthetic reaction, and then forming the loop, generate light which tentative; they are working on biofuels, is the use of the contents of chlorophyll in photosynthetic reaction, and then forming the loop, generate light which .
is a kind of clean energy,is a trend and research direction of Professor Li Heng is a kind of clean energy,is a trend and research direction of Professor Li Heng . 10 years as a nuclear material, the ion beam 20 years, 30 years of biological material, from physical to chemical to biological, 10 years as a nuclear material, the ion beam 20 years, 30 years of biological material, from physical to chemical to biological, .
interdisciplinary research in these fields, and he mentored and coached a large number of foreign talents in China in many areas has made important contributions to interdisciplinary research in these fields, and he mentored and coached a large number of foreign talents in China in many areas has made important contributions to .
