共搜索到10500条信息,每页显示10条信息,共1050页。用时:0小时0分0秒521毫秒
......
......
......
......
......
......
Effect of ultrasonic stirring on temperature distribution and grain refinement in Al-1.65%Si alloy melt LI Jun-wen(李军文)1, 2, T. Momono3, FU Ying(付 莹)1, JIA Zheng(贾 征)1, Y. Tayu3 1. College... generation in ingot start to occur with increasing the time of ultrasonic stirring. Key words: ultrasonic stirring; temperature distribution; ingot; grain refinement  ......
Solidification microstructures and mechanism of grain refinement of electrolytic low titanium Al alloys WANG Ai-qin(王爱琴)1, 2, XIE Jing-pei(谢敬佩)2, LI Ji-wen(李继文)2, LIU Zhong-xia(刘忠侠)1, WANG... University of Science and Technology, Luoyang 471003, China Received 28 July 2006; accepted 15 September 2006 Abstract: The solidification microstructures and the mechanism of grain refinement......
......
the spray formed AZ91 Mg alloy is sufficiently refined by Si added. Key words: AZ91 Mg alloy; spray forming technology; Mg2Si; grain refinement  ......