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Finite-Element Simulation and Experimental Research of the Hot-Press Sintering of Nano-Sized Ceramic Powders

Guoqing CHEN , Kaifeng ZHANG , Guofeng WANG , Y , ong YU

Numerical simulation of hot-press sintering of nano-sized ceramic powders was introduced by the commercial finite element code MSC.MARC. The powder plastic model and the thermo-mechanical coupled quadrilateral element were developed and adopted in the simulation. The mechanical and thermal propertie...

关键词: Sintering , null , null , null

Superplastic Forming and Diffusion Bonding for Sandwich Structure of Ti-6Al-4V Alloy

Wenbo HAN , Kaifeng ZHANG , Guofeng WANG , Xiaojun ZHANG

材料科学技术（英文）

Superplastic forming and diffusion bonding (SPF/DB) is a well-established process for the manufacture of components almost exclusively from Ti-6Al-4V sheet material. The sandwich structure of Ti-6Al-4V alloy is investigated. The effects of the microstructure on the SPF/DB process were discussed. The...

关键词: Superplastic forming , null , null , null

Microstructural and Microhardness Variation of Amorphous Fe78Si9B13 Alloy during Bend Stress Relaxation

Xifeng LI , Kaifeng ZHANG , Changli WANG , Wenbo HAN , Guofeng WANG

材料科学技术（英文）

The amorphous Fe78Si9B13 ribbons were bend stress relaxed at various temperature well below the crystallization temperature (Tx) for different time. The effect of pre-annealing on the subsequent bend stress relaxation was examined. The variation of the microstructure and microhardness during bend st...

关键词: Bend stress relaxation , null , null , null

Synthesis and Enhanced Superplasticity of the Zirconia-dispersed Alumina Nanocomposite

Guoqing CHEN , Kaifeng ZHANG , Wenbo HAN , Junting LUO

材料科学技术（英文）

A series of alumina-zirconia composites with various grain sizes were prepared from the nano-sized powders with different agglomerations. Microstructural analysis of the sintered compacts indicates that the as-sintered material is a typical intra/inter granular nanocomposite with uniform distributio...

关键词: Nanocomposite , null , null , null

Nanoscale Morphology in Tensile Fracture of a Brittle Amorphous Ribbon

Xifeng LI , Kaifeng ZHANG , Guofeng WANG

材料科学技术（英文）

The paper reports on the observation of nanoscale morphology on the tensile fracture surface of a brittle amorphous Fe-based ribbon. The formation of nanoscale damage cavity structure is a main characteristic morphology on the fracture surfaces. Approaching the ribbon boundary, these damage cavities...

关键词: Nanoscale periodic corrugation , 断裂空洞 , 拉伸断裂

Application of Fractal Theory in the Synthesis of Nano-sized 3Y-TZP Superplastic Ceramic Materials

Guofeng WANG , Kaifeng ZHANG , Dezhong WU

材料科学技术（英文）

Nano-sized 3Y-TZP powders were Synthesized by two methods. A fractal software was developed. A new and convenient method for characterizing the quality of Synthetic process by using fractal theory was obtained....

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材料期刊网

Finite-Element Simulation and Experimental Research of the Hot-Press Sintering of Nano-Sized Ceramic Powders

Superplastic Forming and Diffusion Bonding for Sandwich Structure of Ti-6Al-4V Alloy

Microstructural and Microhardness Variation of Amorphous Fe78Si9B13 Alloy during Bend Stress Relaxation

Synthesis and Enhanced Superplasticity of the Zirconia-dispersed Alumina Nanocomposite

Nanoscale Morphology in Tensile Fracture of a Brittle Amorphous Ribbon

Application of Fractal Theory in the Synthesis of Nano-sized 3Y-TZP Superplastic Ceramic Materials

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