The influence of spark plasma sintering temperatures on the microstructure,hardness,and elastic modulus of the nanocrystalline Al-xV alloys produced by high-energy ball milling

查看全文 作　　者：[1]J.Christudasjustus;[1]C.S.Witharamage;Ganesh [2]Walunj;[2]T.Borkar;[1]R.K.Gupta

机构地区：[1]Department of Materials Science and Engineering,North Carolina State University,Raleigh,NC 27606,United States;[2]Department of Mechanical Engineering,Cleveland State University,Cleveland,OH 44115,United States

出　　处：《Journal of Materials Science & Technology》索引2022年第27期,共9页

基　　金：the financial support received from the National Science Foundation(Nos.NSF-CMMI 1760204 and 2131440)under the direction of Dr.Alexis Lewis;supported by the State of North Carolina and the National Science Foundation(No.ECCS-1542015);support from the National Science Foundation(DMR1726294)。 摘　　要：Al-xV alloys(x=2 at.%,5 at.%,10 at.%)with nanocrystalline structure and high solid solubility of V were produced in powder form by high-energy ball milling(HEBM).The alloy powders were consolidated by spark plasma sintering(SPS)employing a wide range of temperatures ranging from 200 to 400°C.The microstructure and solid solubility of V in Al were investigated using X-ray diffraction analysis,scanning electron microscope and transmission electron microscope.The microstructure was influenced by the SPS temperature and V content of the alloy.The alloys exhibited high solid solubility of V–six orders of magnitude higher than that in equilibrium state and grain size<50 nm at all the SPS temperatures.The formation of Al3V intermetallic was detected at 400℃.Formation of a V-lean phase and bimodal grain size was observed during SPS,which increased with the increase in SPS temperature.The hardness and elastic modulus,measured using nanoindentation,were significantly higher than commercial alloys.For example,Al-V alloy produced by SPS at 200℃ exhibited a hardness of 5.21 GPa along with elastic modulus of 96.21 GPa.The evolution of the microstructure and hardness with SPS temperatures has been discussed. 关键词：Spark plasma sintering Aluminum alloys Nanocrystalline alloys High-energy ball milling NANOINDENTATION HARDNESS Elastic modulus

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The influence of spark plasma sintering temperatures on the microstructure,hardness,and elastic modulus of the nanocrystalline Al-xV alloys produced by high-energy ball milling

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引证文献(3)

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