An investigation Was made for the influence of thermomechanical treatmentprocessing such as overaging prior to cold work,solution temperature,solution time,coldwork,heating rate,etc.on the recrystallization behavior of A1-Li-Cu-Mg-Zr alloys.Theresults ind

The experiments about the wear resistance of laser rapidly solidified Al-Li(?)been done and the wear resistances under different treatment conditions haveestimated.The results show that the wear resistance is obviously affected by the differ-(?)atment (?)

An investigation has been made of the factors effecting the stress-rupturestrength in a single crystal Ni-base superalloy.The original grain boundaries andrecrystallization arising from the mechanical processes have been found to be both detri-mental fact

The effect of carburized depth,carbon content and core structure on thetorsional flow harden behaviour and the fracture feature of 20CrMnM_ocarbuizing steel wasinvestigated in a relatively allround way.The results show that the core structure is themain f

Effect of hydrogen on the transformation of the plating Ni film structurewas studied.Pre-charging hydrogen in A_3 steel substrate and decreasing the bath pH bothcan promote the transformation from crystal to amorphous state.It was proved that theadsorbed

The amorphous or crystal structure of Fe-Mo alloy deposit has been ob-tained in a strong alkaline solution of different Mo content and in differentelectrodeposition conditions.The bath is stable and the process is simple.The amorphousstate coating can be

On the surface of Ag tape with about microns thickness superconductingflim was coated by a nonequlibrium solidification process and treated by laser zone meltingmethod.The flexible superconducting composite tape with dense structure better bindingcharater

Bi-based superconducting fibers have been fabricated by means oflaser-heated pedestal growth(LHPG)method from amorphous materials prepared by meltand quench method for the first time.The zero resistance temperature is 86 K,and the criti-cal current densit

The luminophors CaO-SiO_2:Eu~(3+),Bi~(3+)were synthesised by sol-gel method.The reactants are Eu~2O_3,Bi,CaCO_3,Li_2CO_3and Si(OC_2H_5)_4.In the sol-gel method the reac-tion temperature is lower than that in solid phase reaction.The optimum chemical compo

The nearest neighboring F distribution around Zr in four differentmulticomponent fluorozirconate glasses is studied by EXAFS.The compositions of theseglasses are similar to each other,except partial substitution or addition.However,it is shownthat there a

The component,technics and properties of characteristic black glass are in-troduced.Black glass is simultaneously used as absorbing heat material and structural ma-terial.In this paper the structure and character of evacuated tube and collector manufac-tu

The S-N curves of three Y_2O_3-ZrO_2 ceramics were measured.Parametersused to characterize subcritical crack growth in the ceramics were calculated and were usedto plot failure prediction diagrams of the ceramics.The experimental results shown that thestr

Single-Edge-Notched-Beam(SENB)method is rather popular and simplefor measuring the fracture toughness of ceramic materials,but it is not perfect enough intheory.Experiments show that the toughness value measured by SENB method is relatednot only to the si

The uniaxial compression stress-strain curves of loading-and-unloadingcycle and yielding stresses σ_s for PMMA in the ranges of T=233-343K and ε_t=1.0x10~(-4)-1.0x10~(-1)s~(-1) are measured.According to Eyring theory of absolut reaction rates,theexact the

Interface reaction and interface structure of SiC-Ni coated fibre reinforcedaluminum composites and their effects on mechanical properties of the composites havebeen studied.Fracture of the composites under the given interface condition has beenanalysized

By analysing of mechanics model of human ossicular chain system,the ef-fects of the system mass,transmitted audio frequency and Combined strength of tissue withartificial ossicular chain(AOC) on mechanical and acoustic impedance of the system havebeen stu

This paper has studied a composite material of fiber reinforced PMMAwhich can be used for cranicerebral trauma prosthesis and studied the mechanical proper-ties of this artificial skull and skull of body.The result of experiments shows that this com-posit