摘要
针对3种典型铝合金研究了采用ECAP法细化晶粒的效果,用TEM观察了经ECAP变形的合金在退火过程中的微观组织形态的演变。结果表明:采用ECAP方法与适当的热处理工艺相匹配,可以将铝合金晶粒细化到1μm以下,细化效果与合金成分有一定的关系,合金化程度高的合金,可达到的细化效果更好。随退火温度的提高,采用ECAP方法变形的合金晶粒尺寸增大,强度下降,延伸率增加。图5,参12。
In this paper, the effect of ECAP (equal channel angular pressing) on the grain refinement of three commercial Al-alloys has been studied by the measurement of hardness , tensile properties and TEM observations. It has been shown that the grain sizes of the Al-alloys could be fined to 1 μm by ECAP on the optimizing annealing conditions . The composition of the alloys has the influence on the grain refinement. The grain sizes of 2024 and 3003 alloys are smaller than that of 1060 alloy at the same annealing condition. With annealing temperature increased, the grain size of the alloys is increased , the strength of the alloys is decreased, and the elongatioin is increased. 5figs. ,12refs.
出处
《湘潭矿业学院学报》
2003年第2期41-43,共3页
Journal of Xiangtan Mining Institute
基金
国家自然科学基金(编号:59971066)
