Title of article :
Study on isothermal precision forging process of rare earth intensifying magnesium alloy
Author/Authors :
Shan، نويسنده , , Debin and Xu، نويسنده , , Wenchen and Han، نويسنده , , Xiuzhu and Huang، نويسنده , , Xiaolei، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Pages :
5
From page :
1698
To page :
1702
Abstract :
A three dimensional rigid-plastic finite element model is established to simulate the isothermal precision forging process of the magnesium alloy bracket based on DEFORM 3D in order to analyze the material flow rule and determine the forging process scheme. Some problems such as underfilling and too large forging pressure are predicted and resolved through optimizing the shapes of the billet successfully. Compared to the initial microstructure, the isothermal-forged microstructure of the alloy refines obviously and amounts of secondary phases precipitate on the matrix during isothermal forging process. In subsequent ageing process, large quantities of secondary phases precipitate from α-Mg matrix with increasing ageing time. The optimal comprehensive mechanical properties of the alloy have been obtained after aged at 473 K, 63 h with the ultimate tensile strength, tensile yield strength and elongation 380 MPa, 243 MPa and 4.07% respectively, which shows good potential for application of isothermal forging process of rare earth intensifying magnesium alloy.
Keywords :
FEM simulation , microstructure , Ageing treatment , mechanical properties , isothermal forging
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
Serial Year :
2012
Journal title :
MATERIALS SCIENCE & ENGINEERING: B
Record number :
2150681
Link To Document :
بازگشت