Nano-structured Si2N2O-Sialon composite with excellent superplasticity

摘要：

　　Fully-dense Si2N2O-Sialon composites,with an average grain size smaller than 80 nm,were prepared with nano-sized row powders by the conventional hot-press sintering technique.Tensile test at a record strain rate of 4.7 ×10-3 and a rather low temperature of 1550℃ showed an excellent elongation of 150 %.Superplastic extrusion at a temperature as low as 1550 ℃ and a high velocity of 0.5 mm/min was performed at a big extrusion ratio of 3.57.

关键词： Nano-structured composite Si2N2O-Sialon Superplasticity Extrusion

作者: Luo Junting

作者单位: Key Laboratory of Metastable Materials Science and Technology, School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, Hebei, P. R. Chnia

会议类型: 国际会议

会议名称: 第五届亚洲微纳成形技术研讨会(AMMFT2012)暨第三届微纳成形学术委员会会议

会议地点: 哈尔滨

会议语种:英文

页码: 66-68

在线出版日期: 2012-08-01（万方平台首次上网日期，不代表论文的发表时间）