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 Research Highlights => Nano Multilayered Metallic Mat 【Print】 【Back】
Published date: [8/24/2025]    Read [59] times
    High strength and high plastic stability are difficult to be simultaneously obtained in metallic materials. The research team in Central South University, China leaded by Prof. Jianjun Li had systemically studied the improvement of metallic composites by nanoscale multilayered introduction and interface architecting. The journal paper of "Remarkable strengthening of nanolayered metallic composites by nanoscale crystalline interfacial layers" has shown remarkable strengthening of metallic composites by introducing nanoscale crystalline interfacial layers into the layered interfacial region Al/Ni/Al/Cu and controlling of the interfacial layer thickness. ======================================================== 按此在新窗口浏览图片 ======================================================== Besides, by proper tailoring the layer thicknesses of the constituent crystalline Nb and amorphous phases a-CuNb can be significantly suppressed shear instability as a result in outstanding mechanical performance such as ultra-high strength and superior plasticity. The research works are published in "Strong resistance to shear instability in multilayered metallic composites by nanoscale amorphous-BCC crystalline interfaces" . ======================================================== 按此在新窗口浏览图片 ======================================================== 按此在新窗口浏览图片 ======================================================== The research team of Prof. Jianjun Li had further studied the nanolayered metallic films (NMFS). The research works are published in "The quantitative evaluation of the plasticity of Nb amorphous CuNb nanolayered thin films by micro-pillar compressions and micro-indentations as well as their correlation" .They are the first team to conduct systematic micro-pillar (MC) with micro-indentation (MI) test to investigate the strength and quantitatively evaluate the plasticity of NMFS. The results show that the MI-evaluated homogeneous deformation strain (HDS) are in quantitatively agreement with the MC-measured samples. The research work has made an attempt to give a convenient way to quantitatively evaluate the plasticity of the NMFs by using several simple MI tests with the aid of the newly developed theoretical model, so that the time-consuming and expensive MC tests could be avoided. ======================================================== 按此在新窗口浏览图片 ======================================================== Those functional nanoscale multilayered metallic compositions are prepared and fabricated by PTL6S PVD Sputtering System .
 
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