Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 3

Single Crystal Related Publications

3 In-situ Observations Using SEM-EBSD for Bending Deformation in Single-Crystal Materials

Authors: Takashi Sakai, Jun-Ichi Koyama, Yuko Matayoshi, Ying-jun Jin

Abstract:

To elucidate the material characteristics of single crystals of pure aluminum and copper, the respective relations between crystallographic orientations and microstructures were examined, along with bending and mechanical properties. The texture distribution was also analysed. Bending tests were performed in a SEM apparatus while its behaviors were observed. Some analytical results related to crystal direction maps, inverse pole figures, and textures were obtained from electron backscatter diffraction (EBSD) analyses.

Keywords: Microstructure, Single Crystal, Texture, Bending, pure aluminum, pure copper, SEM-EBSD analysis

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2 In-Situ EBSD Observations of Bending for Single-Crystalline Pure Copper

Authors: Takashi Sakai, Saori Yoshikawa, Hideo Morimoto

Abstract:

To understand the material characteristics of singleand poly-crystals of pure copper, the respective relationships between crystallographic orientations and microstructures, and the bending and mechanical properties were examined. And texture distribution is also analyzed. A bending test is performed in a SEM apparatus and while its behaviors are observed in situ. Furthermore, some analytical results related to crystal direction maps, inverse pole figures, and textures were obtained from EBSD analyses.

Keywords: Microstructure, Single Crystal, Texture, Bending, pure copper, SEM-EBSD Analysis

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1 Fabrication of Single Crystal of Mg Alloys Containing Rare Earth Elements

Authors: Tae Kwon Ha, Joon Ho Kim

Abstract:

Single crystals of Magnesium alloys such as Mg-1Al, Mg-1Zn-0.5Y, Mg-3Li, and AZ31 alloys were successfully fabricated in this study by employing the modified Bridgman method. Single crystals of pure Mg were also made in this study. To determine the exact orientation of crystals, Laue back-reflection method and pole figure measurement were carried out on each single crystal. Dimensions of single crystals were 10 mm in diameter and 120 mm in length. Hardness and compression tests were conducted and the results revealed that hardness and the strength strongly depended on the orientation. The closer to basal one the orientation was, the higher hardness and compressive strength were. The effect of alloying was not higher than that of orientation. After compressive deformation of single crystals, the orientation of the crystals was found to rotate and to be parallel to the basal orientation.

Keywords: Single Crystal, Hardness, Orientation, compressive strength, Mg alloys, Modified Bridgman method, Pole figure

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