Microstructure and Mechanical Properties of Quasicrystal Reinforced Magnesium Matrix Composites

摘要：

Magnesium-based composites reinforced with stable icosahedral quasicrystal particles have been fabricated via Repeated Plastic Working (RPW) process. The microstructure of the composites has been investigated by XRD, SEM, TEM and HREM, and its mechanical properties have also been studied. The results showed that the RPW process could reduce the matrix grain size significantly, and the average grain size of matrix was only about 500 nm after 200 cycles of RPW. A good metallurgical bond interface between the quasicrystal particles and the Mg matrix was found. The composites exhibited the maximum yield strength of 265MPa and the maximum ultimate tensile strength of 309MPa at room temperature, respectively. The enhancement of mechanical properties is attributed to the strengthening effect of the quasicrystal particles and the fine-grain size of matrix.

关键词： quasicrystal Mg matrix composite RPW process

作者: Xudong Wang Wenbo Du Zhaohui Wang Shubo Li

作者单位: School of Materials Science and Engineering, Beijing University of Technology,Beijing 100124, China School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 242-246

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）