HUANG Zheng Beijing University of Aeronautics and Astronautics
,
Beijing
,
ChinaZHAO Deqian CHEN Xichen Institute of Physics
,
Academia Sinica
,
Beijing
,
China
金属学报(英文版)
The microstructural feature of Al-In monotectic alloy processed under microgravity has been investigated It was found that in the sample cooled in space,there are a lot of In particles in A! dendrite,but no particle has been observed in the sample cooled on the ground.Moreover, the In particles distribute with regularity and the A1 dendrite has an obvious boundary layer marked by a string of particles.Thus,the distinction between them may reflect the character- istics of the solid/liquid interface during solidification under different gravity conditions.
关键词:
microgravity
,
null
,
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
中国腐蚀与防护学报
N。1Atmospheric Corrosivlty for Steels………………………………………………… .LIANG Caideng HO[I i。-tat（6）Caustic Stress Corrosion Cr。king of Alloy 800 Part 2.The Effect of Thiosul执e……………………………………… KONG De-sheng YANG Wu ZHAO Guo-zheng HUANG De.ltL。ZHANG Yu。。he CHEN She。g-bac（13）SERS slid E16CttOCh6iniC81 Stlldy Of Illhibit1Oli M6ch＆tllsth Of ThlollY68 Oil ITOll ID H....
关键词:
