首页|Dynamic recrystallization mechanism,texture evolution development and mechanical characteristics of a Mg-8.7Gd-4.18Y-0.42Zr magnesium alloy by ECAP

Dynamic recrystallization mechanism,texture evolution development and mechanical characteristics of a Mg-8.7Gd-4.18Y-0.42Zr magnesium alloy by ECAP

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Equal channel angle pressing is recognized for its ability to refine alloy grains and alter grain orientation,thereby achieve better mechanical performance of the magnesium alloy.This study investigates the microstructures,dynamic recrystallization mechanism,texture development,and mechanical performance of GW94K(Mg-8.7Gd-4.18Y-0.42Zr wt.%)Mg alloy following ECAP-4 passes at 400 C and 3 mm/min.Results show that when high-temperature deformation is undertaken,twin formation is suppressed while dislocation slip is facili-tated,increasing dislocation density during deformation.Following ECAP deformation,the sample displayed higher fracture elongation,TYS,and UTS than the as-solutioned GW94K alloy.In particular,the GW94K alloy performed well mechanically after ECAP-4 passes,with an ultimate TYS of 231 MPa,an UTS of 290 MPa,and an elongation of 14.8%.DDRX and shear bands induce CDRX,both of which are important in plastic deformation.as well as in modifying microstructure and grain orientation during ECAP deformation.

Equal channel angular pressingDynamic recrystallization mechanismMechanical performanceMg-Gd-Y-Zr alloyMagnesium alloyTexture development

Ling Zhang、Yinglong Li

展开 >

School of Materials Science and Engineering,Northeastern University,Shenyang,Liaoning,110819,PR China

School of Mechanical and Engineering,Ningxia Institute of Science and Technology,Shizuishan,Ningxia,753000,PR China

Ningxia Natural Science Foundation ProjectNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaYouth Top Talent of Ningxia province of China

2023AAC0337511574043U17601052020365

2024

10.1016/j.pnsc.2024.04.002

自然科学进展·国际材料(英文)
国家自然科学基金委员会

自然科学进展·国际材料(英文)

影响因子：0.25
ISSN：1002-0071
年,卷(期)：2024.34(2)
  • 4