XU YUANSEN Xu Yuansen, a scientist in metallurgy and microelectronics, was born in Zhejiang Province in May 1926.  He graduated from Zhejiang University and joined Shanghai Institute of Metallurgy, Chinese Academy of Sciences.  Now he is the researcher of this institute.  He was elected the academician of Chinese Academy of Engineering in 1995. In 1950, he developed a manufacture method of nodular cast iron, a material with steel strength but lower process cost.  This method was widely accepted by many machinery and shipbuilding companies. There are two huge complex iron ores in China.  One is in Baotou, containing fluorspar and rareearth minerals, and another is in Panzhihua, containing Ti and V elements.  These minerals in these ores couldnt be separated cost effectively by means of ore dressing, and no successful records about smelting these complex ores in blast furnaces in metallurgical history of that time.  Over several years of hard work, in 1950s, his group provided a solid scientific foundation for design and smelting schemes of the two ores, and later two big Chinese steel companies were constructed and smoothly working up to now. Since 1965, he shifted from metallurgy to development of high speed integrated circuits, including memories, logics, microprocessors, linear circuits and gate array.  Many of these integrated circuit designs were transferred to semiconductor plants and produced high beneficial results. Mr. Xu won many national science prizes from State, Chinese Academy of Sciences, and Shanghai government.