Several types of hydrogenation/dehydrogenation processes have been studiedand applied to achieve the structural modification in commercial annealed α-Ti plate material.It is discovered that,at room temperature,there exist two kinds of hydride according to

Several models of primary dendrite spacing for binary alloy were reviewed.A comparison ofthe models with experimental data in a SC multicomponent superalloy was carried out for examining thecompatibility of the models.Results indicate an obvious deviation

The technical parameters influencing the infiltrating height of the molten metalin the process of producing aluminium alloy foam by low-pressure infiltration method were in-vestigated.Experiments indicate that the height increases with the preheating temp

Microcrack initiation,growth and fracture behaviors under bend loading wereinvestigated by using three point bend test for an Al-Li alloy.Bend resistance was alsodetemined.Bend resistance decreased in following order:NA→PA→OA→cast.Comprehensiveproperties

In this paper,a study on superplastic deformation process was conducted on anunpretreated cold-rolled Al-Li-Cu-Mg-Zr alloy based on the concept of three-stage tension.The experimental results of superplastic tensile test carried out according to orthonorm

Effects of rotational speed and number of balls on the amorphization process ofNi_(50)Ti_(50)mixed elemental powders in attritor ball milling have been studied.A model for calcu-lating the energy transfer in M A have been introduced,the relationships of p

The electronic structure of Ti_3Sn and Ti_3Sn-Nb calculated using the discretevariational(DV)Xα-cluster method has been related to its mechanical behaviour.Analysis ofthe bond order and density of states shows that the interactions between Ti and Sn atom

The relations between △r value and texture of deep drawing phosphorus con-taining steels have been studied.It is concluded that △r value depends on{111}whichparalled to the rolling direction.The △r value is regressed respectively by(△V/V_({111}<112>)

In this paper,isothermal oxidation at 1000—1100℃ and cyclic oxidation at1000℃ were investigated in air.The results indicate that the cast Ni_3Al alloy formed Al_2O_3,NiO and NiAl_2O_4 complex oxide scales during oxidation,while sputtered Ni_3Almicrocrysta

Usually the coating is very thin compared with substrate.The micro-mechanical modelwith semi-infinitely thick substrate is presented.The analytical solution of mismatch stress isE_c/(1-γ_c)·(α_s-α_c)△T.By using finite element method,the numerical solution

The poor sinterability of B_4C limits its widespread application because bothhigh temperature and high pressure are required for a complete densification.Morever,B_4C suf-fers from a low strength and fracture toughness,but possesses a high potential use i

Alumina films were prepared by electron beam evaperation from α-Al_2O_3 with10 keV or 20 keV argon ion bombardment.The temperature of substrates was maintained atroom temperature(RT)or 300℃.The structure and topography were investigated by XRD,XPS,TEM and

Enamel coating was produced on steel substrates using continuous wave CO_2laser irradiation from the same raw material as used for the industrially used enamel coating.The formed coating fairly well joined to the substrate and had a bumpy glossy surface.I

Gas permeabilities and permselectivities for gas pairs H_2/N_2 and O_2/N_2through a series of aromatic copolyetherimides,which were prepared from four differentdianhydrides(HQDEA,PMDA,BPDA,and BTDA)and 4.4'-methylenedianiline(MDA),have been investigated a

The effects of testing temperature on notch impact strength,fractographic fea-tures and fracture surface roughness of PVC have been studied.The results show that there areminimum value of notch impact strength and fracture surface roughness of PVC with ch

The effect of thermal diffusion on electrical properties of(Sr,Ca)TiO_3multi-function ceramics with coating ion was studied.The distributions of coating ion at grainboundary were examined by means of micro-electron probe analysis(EPA).And barrier heightso

Effect of mullite whisker contents on the microstructure and mechanical proper-ties of mullite(w)/TZP ceramic composites were studied.The experimental results show thatwhen the mullite whisker contents are more than 15v.-% and hot-pressed temperature is h