VISCOSITY OF LIQUID ALUMINIUM MODIFIED BY ELECTRIC PULSE
The modification of liquid metal by electric pulse (EP) is a novel method for grain refinement. In this work, based on the reported structural heredity of EP-modified liquid aluminum, we investigated its viscosity change by using torsional oscillation viscometer. The results validate the viscosity of EP-modified liquid aluminum also decreases with increasing temperature and meets approximately exponential correlation on the whole. Moreover, it is especially important that the EP-modified liquid aluminum has the higher viscosity and possesses the bigger viscous-flow cluster in a certain temperature range, which should be associated with the increase of the order degree of its liquid structure. Differential scanning calorimetry (DSC) measurement also confirms that viewpoint. These coupling results experimentally testify the proposed mechanism of electric pulse modification (EPM) modeled merely by postulation.
Electric pulse modification liquid aluminum viscosity atomic cluster DSC
JINGANG QI JIANZHONG WANG BING WANG DAQIANG CANG
Department of Material and Chemical Engineering, Liaoning University of Technology, Jinzhou 121001, School of Metallurgical & Ecological Engineering, University of Science & Technology Beijing, Beijin
国际会议
第五届先进材料与加工国际会议(Fifth International Conference on Advanced Materials and Processing ICAMP-5)
哈尔滨
英文
869-874
2008-09-03（万方平台首次上网日期，不代表论文的发表时间）