史国栋

个人信息Personal Information

副教授

硕士生导师

性别:男

毕业院校:哈尔滨工业大学

学位:博士

所在单位:材料科学与工程学院

学科:航空宇航制造工程. 飞行器设计. 材料学. 航空航天力学与工程

办公地点:综合实验1号楼201B室

联系方式:gdshi@dlut.edu.cn

电子邮箱:gdshi@dlut.edu.cn

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The mechanical properties and microstructure of the bionic alloy-ceramic laminated composite

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论文类型:期刊论文

发表时间:2012-01-01

发表刊物:MATERIALS & DESIGN

收录刊物:SCIE、EI

卷号:33

期号:1

页面范围:300-305

ISSN号:0261-3069

关键字:Laminates; Mechanical properties; Microstructure

摘要:In the present work, the bionic alloy-ceramic laminated composite was fabricated by electron beam-physical vapor deposition method. The ingots of Ni-20Co-12Cr-4Al (wt.%) and ZrO(2)-8 mol%Y(2)O(3) were used as the sources of the alloy layer and ceramic layer, respectively. The laminated composite was generally destroyed within the ceramic layer when the interlaminar strength was determined, which revealed that the excellent interface bonding between the ceramic layer and the alloy layer. The obvious diffusion interfaces between the ceramic and alloy layers were readily detected, which was favorable to the mechanical properties of the laminated composite. In the heat treatment process, the diffusion of the flaws within the ceramic layer and/or alloy layer to the interface between the ceramic layer and alloy layer was easier compared with the occurrence of interlaminar diffusion. It was confirmed by the X-ray diffractometer that the reaction of the ceramic layer with alloy layer was simple physical diffusion. The tensile strength of the laminated composite increased first and then decreased as the heat treatment time increased, which was attributed to the mutual reaction of the increase in the relative density with the formation of the flaws located at the interface. (C) 2011 Elsevier Ltd. All rights reserved.