The orientation measurement of nickel substrate has been studied bymeans of EBSP .Cube texture quality can be showed in a quantitative way and give more complete and effective information on a macroscopic region than ...The orientation measurement of nickel substrate has been studied bymeans of EBSP .Cube texture quality can be showed in a quantitative way and give more complete and effective information on a macroscopic region than by XRD method .展开更多
Microstructure and local crystallography of rolled Al crystals were investigated by the electron backscattered pattern (EBSP) technique. A crystal slip analysis was proposed based on the experimental results and Frank...Microstructure and local crystallography of rolled Al crystals were investigated by the electron backscattered pattern (EBSP) technique. A crystal slip analysis was proposed based on the experimental results and Frank formula.展开更多
The microstructures of the commercial aluminum heavily deformed by the accumulative rolled bonding (ARB), the equal channel angular pressing (ECAP) and the common cold rolling (CR) were determined by the electron back...The microstructures of the commercial aluminum heavily deformed by the accumulative rolled bonding (ARB), the equal channel angular pressing (ECAP) and the common cold rolling (CR) were determined by the electron backscatter patterns system in SEM with thermal field gun. It was found that the EBSP system can be used to determine the microstructure in the deformed state, even in the heavily deformed state. The local texture of the deformed materials was reveal also in this paper.展开更多
In this paper we examine the effect on the determination of boundary length per unit area of the stepped nature of boundaries in orientation maps derived from electron back-scatter diffraction data.A correction factor...In this paper we examine the effect on the determination of boundary length per unit area of the stepped nature of boundaries in orientation maps derived from electron back-scatter diffraction data.A correction factor is derived for isotropic microstructures.Two measures based on length per unit area for the determination of the cross-link boundary spacing in high strain deformation microstructures are then compared.A geometric method based on subtraction of the contribution to the length per area of the lamellar boundaries gives the best results,though in some cases a method based on boundary misorientation angles may be preferred.展开更多
Rheocasting with semi-solid slurry has been widely used in industrial processes in recent years.The Cup-Cast method is one of the most effective ways to produce semi-solid slurry for rheocasting.In order to study the ...Rheocasting with semi-solid slurry has been widely used in industrial processes in recent years.The Cup-Cast method is one of the most effective ways to produce semi-solid slurry for rheocasting.In order to study the effect of electromagnetic stirring on the fabrication of semi-solid slurry,we have applied the Double-Axis-Electromagnetic Stirrer(DAEMS)to the Cup-Cast method.Microstructure of the slurry was observed by an optical microscope and Electron Back-Scatter Patterns(EBSP).The results indicated that the electromagnetic stirrer made it possible to accelerate the cooling rate of the melt,thus resulting in a higher quality slurry.展开更多
文摘The orientation measurement of nickel substrate has been studied bymeans of EBSP .Cube texture quality can be showed in a quantitative way and give more complete and effective information on a macroscopic region than by XRD method .
文摘Microstructure and local crystallography of rolled Al crystals were investigated by the electron backscattered pattern (EBSP) technique. A crystal slip analysis was proposed based on the experimental results and Frank formula.
文摘The microstructures of the commercial aluminum heavily deformed by the accumulative rolled bonding (ARB), the equal channel angular pressing (ECAP) and the common cold rolling (CR) were determined by the electron backscatter patterns system in SEM with thermal field gun. It was found that the EBSP system can be used to determine the microstructure in the deformed state, even in the heavily deformed state. The local texture of the deformed materials was reveal also in this paper.
基金Supported by the National Natural Science Foundation of China(No.50371041 and No.50571049)
文摘In this paper we examine the effect on the determination of boundary length per unit area of the stepped nature of boundaries in orientation maps derived from electron back-scatter diffraction data.A correction factor is derived for isotropic microstructures.Two measures based on length per unit area for the determination of the cross-link boundary spacing in high strain deformation microstructures are then compared.A geometric method based on subtraction of the contribution to the length per area of the lamellar boundaries gives the best results,though in some cases a method based on boundary misorientation angles may be preferred.
基金Item Sponsored by Grant-in-Aid for Young Scientists (B) (No.21760597) from the Japan Society for the Promotion of Science (JSPS)
文摘Rheocasting with semi-solid slurry has been widely used in industrial processes in recent years.The Cup-Cast method is one of the most effective ways to produce semi-solid slurry for rheocasting.In order to study the effect of electromagnetic stirring on the fabrication of semi-solid slurry,we have applied the Double-Axis-Electromagnetic Stirrer(DAEMS)to the Cup-Cast method.Microstructure of the slurry was observed by an optical microscope and Electron Back-Scatter Patterns(EBSP).The results indicated that the electromagnetic stirrer made it possible to accelerate the cooling rate of the melt,thus resulting in a higher quality slurry.
