摘要
研究了0-0.15 T的纵向直流磁场对长周期结构增强Mg97Y2Cu1合金凝固组织和力学性能的影响。结果表明纵向直流磁场可以细化合金的初生晶粒,使第二相分布变得均匀且连续,提高晶内溶质含量;随着磁场强度的增加,合金的晶粒尺寸总体上逐渐减小,力学性能逐渐提高,X射线衍射图谱最强峰由（002）变成了（101）;当磁场强度为0.15T时,合金的抗拉强度和伸长率较无磁场处理的试样分别提高了20%和40%。
The influences of different strength （0-0.15T） of longitudinal DC magnetic field on the solidified structure and mechanical properties of Mg97Y2Cu1 alloy reinforced by long period ordered structure were studied. The results show that the primary grains can be refined by longitudinal DC magnetic field. The distribution of second phase becomes more continuous and uniform, and the solute content in grain interior improves. With increase of magnetic field strength, grain size of the alloy decreases grossly, the mechanical properties of the alloy increases gradually, and the （101） diffraction peak replaces the （002） to be the most strongest peak in the XRD patterns. When the magnetic field strength is 0.15T, the tensile strength and elongation of the alloy are increased by up to 20% and 40%, respectively, compared with the alloy in traditional condition.
出处
《热加工工艺》
CSCD
北大核心
2015年第17期20-23,共4页
Hot Working Technology
基金
国家自然科学基金项目(51261026)
关键词
纵向直流磁场
长周期结构
凝固组织
力学性能
longitudinal DC magnetic field
long period ordered structure
solidified structure
mechanical properties
