材料期刊网，材料期刊，材料类期刊，材料期刊投稿

Process of Photoluminescence and Photostimulated Luminescence in BaFBr:Eu Phosphors

Wei CHEN (Lab. of Semiconductor Mater. Sci. , Institute of Semiconductor , Chinese Academy of Sciences , Beijing , 100083 , China)(To whom correspondence should be addressed)Mianzeng SU(Dept. of Chemistry , Peking University , Beijing , 100871 , China)

材料科学技术（英文）

The photoluminescence (PL) and photostimulated luminescence (PSL) of BaFBr:Eu phosphors are reported. In the photoluminescence of BaFBr:Eu, the emission of Eu2+ , e-h recombination and Eu3+ have been observed, while in the photostimulated luminescence only the emission of Eu2+ was observed. This phe...

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A Fractal Study on Brittle-Ductile Transition for Ti-24Al-11Nb Alloy

Guoliang CHEN , Yandong WANG , Yuanding HUANG , Zuqing SUNand Wangyue YANG(State Key Lab. for Adv. Met , Mater. , University of Science and Technology Beijing , Beijing , Beijing , 100083 , China)(To whom correspondence should be addressed)

材料科学技术（英文）

The mechanical behaviours of Ti-24Al-11Nb alloy in the brittle-ductile transition (BOT) have been investigated by using three-point bending tests. The temperature dependence of the fractal dimensions and fractal characterization of fracture surfaces are presented. The probable mechanism controlling ...

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Phase Relations in TiAl+Nb System

Jingguo WANG , Guoliang CHEN , and Zuqing SUN (State Key Lab. for Advanced Metal Materials , University of Science and Technology Beijing , Beijing , 100083 , China)Hengqiang YE (Lab. of Atomic Imaging of Solids , Institute of Metal Research , Academia Sinica , Sh

材料科学技术（英文）

The microstructures and phases of ternary TiAl+Nb alloys containing 50-60 at.-%Al, 0-21 at.-%Nb have been studied using transmission electron microscopy (TEM) and X-ray powder diffraction. The phases present in the alloys and their distribution were found to be a sensitive function of composition. T...

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Segregation Behaviour and Microstructure of Alloy 718VADER Ingot

Yueguang YU , Jie FU and Xishan XIE(University of Science and Technology Bejing , Beijing , 100083 , China)Jialong XU and Chunyong JING(Shanghai Iron and Steel Research Institute , Shanghai , 200940 , China)

材料科学技术（英文）

The segregation behaviour and miclostructure of an alloy 718 VADER ingot in comparison with a VAR ingot were studied. The results show that one serious problem of the alloy 718 VADER ingot is dealing with radial chemistry gradients (especially macro-segregation in Nb). The main factor of Nb gradient...

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Behaviour of Rare Earths in Low Sulphur Steel

Qin LIN+ , Aisheng LIU , Wen YE , Zongsen YU , Dept. of Physical Chemistry , University of Science and Technology Beijing , Beijing , 100083 , China

材料科学技术（英文）

In steels 16Mn and X60 with low S content (0. 003～0. 005%), rare earth metals (REM) still show ef- fects on purifying the molten steel and controlling the sulphide morphology. The optimum ratio of RE/S is about 2. 0, which causes lower content of oxygen and inclusions and higher impact toughness. Th...

关键词: rare earths , null , null

Solid Solution Sm_(1+x)Ba_(2-x)Cu_3O_y and Effect of Quench Temperature on SmBa_2Cu_3O_y

Xianran XING , Zhiyu QIAO , Wenxia YUAN and Shoukun WEI (University of Science and Technology Beijing , Beijing , 100083 , China)(To whom correspondence should be addressed)Xiaolong CHEN , Guanghui RAO and Jingkui LIANG (Institute of Physics , Chinese Academy o

材料科学技术（英文）

By X-ray powder diffraction technique and oxygen content analysis, a solid solution Sm1+xBa2-xCu3Oy has been determined in the range 0≤x≤0.4. When x<0.25. the Sm1+xBa2-xCu3Oy presents orthorhombic symmetry, and the orthorhombic-tetragonaJ transition ocCurs at x = 0.25. With the increase of x, TC...

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In-situ Observation of Initiation and Propagation of Cleavage Microcrack in TiAl

Kewei GAO , Qizhi CHEN , Wuyang CHU and Chimei Hsiao(Dept.of Materials Physics , University of Science and Technolgy Beijing , Beijing , 100083 , China)

材料科学技术（英文）

Nucleating and propagating of nancrack formed in dislocation free zone (DFZ) for the brittle TiAl alloy has been studied through in-situ tensile test in TEM and analyzed using microfracture mechanics. The resufts show that a lot of dislocations can be emitted from a crack tip when the applied stress...

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Further Investigation on the Correlation between Ionization Potential and Superconductivity of Oxides

Wei CHEM and Ruzhang MA(Dept. of Materials Physics , University of Science and Technology Bejing , Bejing , 100083 , China)

材料科学技术（英文）

The relations of oxygen content, critical temperature TC and mean ionization potential < U0> of superconducting oxides are reported. We found that in oxides oxygen is the major element which governs their < U0> te values and thus oxygen content plays an jmportant role in their supercondu...

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Thermomechanical Fatigue Behaviour of a Nickel Base Superalloy

LIANG Jin R. M. Pelloux XIE Xishan Univiersity of Science and Technology Beijing , (formely Beijing Univiersity of Iron and Steel Technology) , 100083 , China. MIT , Cambridge MA 02139 USA.

材料科学技术（英文）

The isothermal low cycle fatigue (LCF) and thermomechanical fatigue (TMF) behaviour of a Ni-base superalloy was investigated. The results show that temperature plays an important role in both LCF and TMF. The alloy shows the lowest LCF fatigue resistance in the intermediate temperature range (～760℃)...

关键词: Ni-base superalloy , null , null

Transformation Behaviour of Austenite in Steel under Condition of Stress-strain and Its Application

Xu WANG , Sigen WANG and Lixian HUA (Dept. of Materials Science and Engineering , University of Science and Technology Beijing , Beijing , 100083 , China)

材料科学技术（英文）

Austenite can be retained at ambient temperature in steels by alloying and processing control. The transformation from austenite to martensite occurs under a certain conditions : thermal or deformation. Stress-strain induced martensitic transformation is important to improve the plasticity of steels...

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材料期刊网

Process of Photoluminescence and Photostimulated Luminescence in BaFBr:Eu Phosphors

A Fractal Study on Brittle-Ductile Transition for Ti-24Al-11Nb Alloy

Phase Relations in TiAl+Nb System

Segregation Behaviour and Microstructure of Alloy 718VADER Ingot

Behaviour of Rare Earths in Low Sulphur Steel

Solid Solution Sm_(1+x)Ba_(2-x)Cu_3O_y and Effect of Quench Temperature on SmBa_2Cu_3O_y

In-situ Observation of Initiation and Propagation of Cleavage Microcrack in TiAl

Further Investigation on the Correlation between Ionization Potential and Superconductivity of Oxides

Thermomechanical Fatigue Behaviour of a Nickel Base Superalloy

Transformation Behaviour of Austenite in Steel under Condition of Stress-strain and Its Application

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