期刊论文详细信息
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 卷:764
Microstructure and mechanical properties of Mg/Mg bimetal composites fabricated by hot-pressing diffusion and co-extrusion
Article
Zhao, K. N.1  Xu, D. X.1  Li, H. X.1  Zhang, J. S.1  Chen, D. L.2 
[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China
[2] Ryerson Univ, Dept Mech & Ind Engn, Toronto, ON, Canada
关键词: Mg/Mg bimetal composite rods;    Hot-pressing diffusion;    Co-extrusion;    Texture evolution;    Mechanical properties;   
DOI  :  10.1016/j.msea.2019.138194
来源: Elsevier
PDF
【 摘 要 】

In the present study, the bimetal composite rods composed of a softer AZ31 sleeve and a harder WE43 core were fabricated via a special process by combining hot-pressing diffusion with co-extrusion, with particular attention to the characterization of microstructure and mechanical properties. The results showed that a well-bonded interface with a diffusion layer of similar to 20 inn in thickness was achieved. The texture in the interfacial region adjacent to the WE43 core changed with the basal poles largely perpendicular to the extrusion direction. Compared with the monolithic Mg billet, the co-extruded AZ31/WE43 bimetal composite rods could achieve a gradient of both composition and microstructure. Such gradients along with the superior interfacial bonding led to a higher compressive and tensile yield strength of AZ31/WE43 bimetal composite rods compared with the AZ31 sleeve. This study indicated that combining hot-pressing diffusion with co-extrusion is an effective method to fabricate the bimetal composites with superior mechanical properties.

【 授权许可】

Free   

【 预 览 】
附件列表
Files Size Format View
10_1016_j_msea_2019_138194.pdf 4075KB PDF download
  文献评价指标  
  下载次数:0次 浏览次数:0次