摘要
将丝径为100μm的不锈钢纤维松装于烧舟中,经1150℃/2h真空烧结和后续加工制备了具有孔隙度范围在70%～95%之间的金属纤维多孔板材。在MTS858材料试验机上检测了多孔板材的准静态剪切性能,重点研究了孔隙度对剪切性能的影响。结果表明,面内剪切应力-应变曲线大致分为3个阶段:应变很低情况下的线性弹性阶段、塑性变形区和应力破坏阶段;随着孔隙度的增加,不锈钢纤维多孔材料的剪切模量、屈服强度减小。
Metal fiber porous materials, which consists of in diameter 100μm fibers were prepared by loose sintering, and the shear properties of sintering metal fibre porous materials with porosity range of about 70%-95% were tested on the MTS858 machine, effects of porosity of the material on shear property of porous metal fiber media were analyzed. The results indicated that shear stress-strain curve of porous metal fiber media present three distinct stages, linear elastic deformation stage, plastic deformation stage and shear failure stage. The yield strength and unloading elasticity modulus decreased with the increase of the porosity.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2010年第A03期565-567,共3页
Journal of Functional Materials
基金
国家重点基础研究发展计划(973计划)资助项目(2006CB601201B)
国家高技术研究发展计划(863计划)重点资助项目(2009AA032601)
