李恒德,材料科学家,新中国核材料科学教育和基础研究的一位开拓者,我国离子束物理冶金学及生物仿生材料的探索者之一,中国工程院首批院士。他1946年赴美留学获硕士和博士学位,1955年回国在清华大学工作。现为清华大学材料科学与工程系教授,清华大学材料科学及工程研究院学术委 Li Hengde, a material scientist, a pioneer in the education and basic research of nuclear materials science in New China, one of the explorers of ion beam physics metallurgy and biomimetic materials in China, and the first batch of academicians of the Chinese Academy of Engineering. He went to the United States in 1946 to study for master and doctoral degree, returning to work in Tsinghua University in 1955. Now Tsinghua University, Department of Materials Science and Engineering Professor, Tsinghua University Institute of Materials Science and Engineering Academic Committee