镁基多孔材料准静态压缩行为与吸能特性研究

HFCAS OpenIR

	镁基多孔材料准静态压缩行为与吸能特性研究
其他题名	The Quasi-static Compressive Behavior and Energy Absorption Properties of Mg-based Porous Materials
	郝刚领 1; 韩福生 2; 王伟国 1
	2013
发表期刊	材料工程
ISSN	1001-4381
摘要	基于可去除填充颗粒的粉末冶金技术制备了孔隙率在40%～80%,孔径在1～2mm内变化的多孔镁和多孔AZ91D镁合金,并系统考察了材料的准静压压缩行为和吸能特性。结果发现,镁基多孔材料的压缩应力-应变曲线由线性弹性区、平台和致密化区域组成,但曲线锯齿状波动较大,表明材料的脆性断裂机制。压缩屈服强度与相对密度的关系可通过Gibson-Ashby模型来理解,但屈服强度对孔径的依赖性较低。吸能本领随相对密度的增加而增加,相同条件下,多孔AZ91D镁合金的吸能本领高于多孔镁,多孔镁的吸能效率则高于多孔AZ91D镁合金。
其他摘要	Porous Mg and porous AZ91D alloy were prepared using powder metallurgy method basing on space holding fillers. The porosity and pore size can be controlled in the range of 40%-80% and 0.5-2.0mm respectively. The investigation was carried out on the quasi-static compressive behavior and energy absorption properties of the Mg-based porous materials. The result shows that the com- pressive stress-strain curves were consisted of linear elastic region, plateau and densification region. The plateau region is serrated which indicates a brittle deformation mechanism. The dependence of yield strength on relative density can be understood in terms of Gibson-Ashby model, but the effect of pore size is small that can be neglectable. The energy absorption capacity of the Mg-based porous ma- terials increases with the relative density increasing. Porous AZ91D alloy at the same conditions ex- hibits a higher energy absorption capacity than the porous Mg, that however represents a higher ener- gy absorption efficiency than the porous AZ91D alloy.
关键词	镁基多孔材料压缩行为吸能特性
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:4759257
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/93374
专题	中国科学院合肥物质科学研究院
作者单位	1.延安大学物理与电子信息学院材料物理研究所 2.中国科学院固体物理研究所 3.延安大学物理与电子信息学院材料物理研究所
推荐引用方式 GB/T 7714	郝刚领,韩福生,王伟国. 镁基多孔材料准静态压缩行为与吸能特性研究[J]. 材料工程,2013,000.
APA	郝刚领,韩福生,&王伟国.(2013).镁基多孔材料准静态压缩行为与吸能特性研究.材料工程,000.
MLA	郝刚领,et al."镁基多孔材料准静态压缩行为与吸能特性研究".材料工程 000(2013).