TN761 99063811一种新型LiNbO<sub>3</sub>光波导调制器的准静电分析=Quasi—TEM analysis of a novel LiNbO<sub>3</sub> opticalwaveguide modulator[刊,中]/钟晟鸾,陈树强,林金桐（北京邮电大学无线工程系....TN761 99063811一种新型LiNbO<sub>3</sub>光波导调制器的准静电分析=Quasi—TEM analysis of a novel LiNbO<sub>3</sub> opticalwaveguide modulator[刊,中]/钟晟鸾,陈树强,林金桐（北京邮电大学无线工程系.北京（100088））∥电子学报.—1998,26（5）.—103—105。展开更多
Hot extrusion was conducted in the α+β phase region for promoting mechanical properties of Ti42Al9V0.3Y. The microstructures and tensile properties before and after hot extrusion were studied. The results show that ...Hot extrusion was conducted in the α+β phase region for promoting mechanical properties of Ti42Al9V0.3Y. The microstructures and tensile properties before and after hot extrusion were studied. The results show that the microstructure of the as-cast alloy mainly consists of massive γ phase in β matrix and the as-extruded alloy mainly consists of lamellar α2/γ, lamellar β/γ, and strip γ propagating from elongated β phase. In the as-cast alloy, the predominantly observed fracture mode is transgranular cleavage failure at room temperature and intergranular fracture at 650-750 °C. After hot extrusion, it transforms into transgranular cleavage-like failure, including translamellar cleavage and delamination. The excellent tensile properties of the as-extruded material are attributed to the obvious refined microstructure with broken YAl2 particles and the micro-crack shielding action of the TiAl lamellasome.展开更多
文摘TN761 99063811一种新型LiNbO<sub>3</sub>光波导调制器的准静电分析=Quasi—TEM analysis of a novel LiNbO<sub>3</sub> opticalwaveguide modulator[刊,中]/钟晟鸾,陈树强,林金桐（北京邮电大学无线工程系.北京（100088））∥电子学报.—1998,26（5）.—103—105。
基金Project supported by the National Postdoctoral Foundation of Chinathe Youth Science and Technology Project of Harbin (No 2008RFQXG040),China
文摘Hot extrusion was conducted in the α+β phase region for promoting mechanical properties of Ti42Al9V0.3Y. The microstructures and tensile properties before and after hot extrusion were studied. The results show that the microstructure of the as-cast alloy mainly consists of massive γ phase in β matrix and the as-extruded alloy mainly consists of lamellar α2/γ, lamellar β/γ, and strip γ propagating from elongated β phase. In the as-cast alloy, the predominantly observed fracture mode is transgranular cleavage failure at room temperature and intergranular fracture at 650-750 °C. After hot extrusion, it transforms into transgranular cleavage-like failure, including translamellar cleavage and delamination. The excellent tensile properties of the as-extruded material are attributed to the obvious refined microstructure with broken YAl2 particles and the micro-crack shielding action of the TiAl lamellasome.
