Effect of Y content on interfacial microstructures and mechanical properties of C_f/Mg composite

详细信息    查看全文

• 作者：Shaofeng Zhang ; Guoqin Chen ; ^{chenguoqin@hit.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Risheng Pei ; Yaping Wang ; Li Daguang ; Pingping Wang ; Wu Gaohui
• 关键词：Metal matrix composite ; Rare earth element Y ; Interfacical characterization ; Interlaminar shear strength
• 刊名：Materials Science & Engineering A
• 出版年：2015
• 出版时间：28 October 2015
• 年：2015
• 卷：647
• 期：Complete
• 页码：105-112
• 全文大小：4594 K

文摘

In this study, the rare earth element Y was added to C_f/Mg composite to improve the interfacial bonding strength. 60 vol% C_f/Mg composites containing different Y content were fabricated by pressure infiltration method. An interfacial layer with nano-scale formed between C_f and Mg–Y alloys. The interfacial products were identified to be MgO, Mg₂Y and Mg₂₄Y₅ by energy dispersive X-ray spectroscopy (EDX) and selected area electron diffraction (SAED). Moreover, the interfacial products enhanced the interface bonding strength, which could be confirmed by the increase of interlaminar shear strength (ILSS). In particular, the C_f/Mg composite with 5.7 wt% Y addition increases the ILSS by about 120.9% from 46.2 MPa to 102.3 MPa.