ZHANG Xiaodong HAN Qiyong University of Science and Technology Beijing
,
Beijing
,
ChinaCHEN Dong Hebei Institute of Metallurgy
,
Shijiazhuang
,
China HAN Qiyong Professor
,
Dept.of Physics and Chemistry
,
University of Science and Technology Beijing
,
Beijing 100083
,
China
金属学报(英文版)
The dissolution equilibrium of magnesium vapour in liguid Fe has been studied in a two-tem- perature-zone furnace at 1600℃ by use of the vapour pressure method.The equilibrium con- stant for the reaction Mg_((g))=[Mg]and the free energy of solution obtained are: K=a_(Mg)/P_(Mg)=0.0236 ΔG°(wt-%)=58300 J/mol
关键词:
liquid Fe
,
null
,
null
QIAO Lijie LIU Rui XIAO Jimei University of Science and Technology Beijing
,
Beijing
,
China
金属学报(英文版)
The effects of stress components on nucleation sites and propagation directions of stress cor- rosion cracks in brass were investigated with specimens under mode Ⅱ and mode Ⅲ loadings. The results indicated that under mode Ⅱ loading,stress corrosion cracks nucleated on the site with maximum normal stress component and propagated along the plane perpendieular to the maximum normal stress,under mode Ⅲ loading,the stress corrosion crack was not evident on the 45°plane due to the general corrosion in aqueous solution with high NH_4OH concentra- tion,while stress corroded in aqueous solution with low NH_4OH concentration, numerous cracks with spacings of 10—150μm were found on the 45°plane with maximum normal stress and no stress corrosion cracks was observed on the plane with maximum shear stress.
关键词:
stress corrosion cracking
,
null
,
null
,
null
