中国有色金属学会会刊(英文版)
中國有色金屬學會會刊(英文版)
중국유색금속학회회간(영문판)
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2003年
3期
645-648
,共4页
张小明%张廷杰%马光来%田锋%李中奎%周廉
張小明%張廷傑%馬光來%田鋒%李中奎%週廉
장소명%장정걸%마광래%전봉%리중규%주렴
7075 aluminum alloy%deformation refinement%ultra-fine grains
Performance of commercial alloys can be improved greatly by severe plastic deformation, which refines grain of metals to several micrometer or sub-micrometer order. During severe plastic deformation, the final size of grain structure depends on the following factors: strain rate, total strain, deformation temperature and so on. Under a certain condition, structure cannot be infinitely refined, which means that the size of grain has a limit with the increase of total strain. Under conventional hot deformation temperature, the grain size of 7075 aluminum alloy can be refined to 1-2 μm, and it will not become smaller with the increase of total strain, that is to say, the limit of grain refinement is about 1 μm.
