Spark Plasma Sintering and Characterization of a Melt-spun Al-Mg-Si Alloy
Melt-spun ribbons of an Al-Mg-Si-(Cu)alloy were prepared and consolidated into bulk samples by spark plasma sintering under 440,460,500 and 520℃.Optimal melt-spinning parameters and hot extrusion temperature were obtained by using different spinning speeds,temperatures and extrusion ratio.Microstructure of the ribbon and the extruded samples were characterized by using differential scanning calorimetry,x-ray diffractometry,scanning electron microscope equipped with energy dispersive spectrometer and optical microscopy.Result showed that the ribbons were ultra-fine grained and after spark plasma sintering at 500℃,fine-grained bulk samples with a diameter of 20 mm and a relative density of 97%were obtained.Corrosion characteristics were determined by electrochemical and immersion experiments.The sintered sample exhibit slightly lesser corrosion resistance than that of the bulk alloy.
ultra fine-grain Al-Mg-Si-(Cu) ribbon melt-spinning spark plasma sintering mechanical property
Ou Yongliang Ngai Tungwai Ngai Sieglind Wang Andi
National Engineering Research Center of Near-Net-Shape Forming Technology for Metallic Materials,Sou Analytical and Testing Center of South China University of Technology,Guangzhou 510640,China
国际会议
北京
英文
540-545
2018-09-16（万方平台首次上网日期，不代表论文的发表时间）