China has successfully developed a molybdenum alloy high strength and high ductility

 2013 年 3 月 4, 2009 China Rare Earth Molybdenum is a rare refractory metals, not only widely used in the production of stainless steel and other steel materials, but also because molybdenum alloy itself has excellent thermal conductivity, high temperature, etc. However, in aerospace, machinery, metallurgy and other fields has broad application prospects. China Nonferrous network. China's molybdenum reserves, production and consumption volume ranking first in the world. China Nonferrous network. But Mo has a low temperature brittleness, low strength, ductility characteristics of poor molybdenum alloy deep processing more difficult, its application is more restricted, so many years of molybdenum in molybdenum alloy products mainly primary products. China Nonferrous network. Research and development with better performance, higher value-added molybdenum alloys, Molybdenum target industry for our country has an extremely important significance. China Nonferrous network.
Currently the major international use of rare earth oxide dispersion strengthened molybdenum alloy, but usually doped molybdenum oxide or molybdenum powder as solid, doped rare earth oxides can be refined to micron or sub-micron level, and were located at the grain boundaries, not only strengthening effect is limited, and molybdenum alloys prone to early fracture. China Nonferrous network. How to simultaneously improve the strength and extension of molybdenum alloy, toughness, has been a challenging problem in this field. China Nonferrous network.
Xi'an Jiaotong University, State Key Laboratory of Materials Task Force Sun Jun lasted more than 10 years, the recent breakthrough in this field. China Nonferrous network. Their actual needs from the engineering, materials preparation technology dating back to the difficulty, concise and solve key scientific issues related to, and then push the material preparation technology, innovation and breakthroughs. China Nonferrous network. They have developed a nano-structured material dispersion strengthened molybdenum alloy, reinforced with nano-rare earth oxide particles and ultrafine-grained microstructure, in obtaining a significant strengthening at the same time, the tensile ductility doubled. China Nonferrous network. The results are published online in the journal Nature Materials on the website. China Nonferrous network. Accreditation people think this is a very important original research results, has important scientific and application value. China Nonferrous network.