Y.G. Wang
,
F.M Yang
,
C.P. Chen
,
N Tang
,
and Q.D. Wang (State Key Laboratory of Magnetism
,
Institute of Physics
,
Chinese Academy of Sciences
,
P.O. Box 603
,
Beijing 100080
,
China)(Department of Materials Science and Engineering
,
Zheiang University Hangzhou 310027
,
China)
金属学报(英文版)
The magnetic phase diagram (x,T) of the SmMn2(Ge1-xSix)2 system has been studied by susceptibility and magnetization measurement. With increasing silicon concentration the temperature region of ferromagnetic ordering decreases on the phaae diagram.
关键词:
magnetic phase diagram
,
null
,
null
,
null
Y.G. Wang
,
Z.Q. Li
,
D. Zhang
金属学报(英文版)
The interfacial microstructure of ternary-boride-based hard cladding material (YF- 2) has been studied using scanning electron microanalyser (SEM), X-ray diffraction (XRD) and energy disperse spectroscopy (EDS). Results show that there are chemical reactions and elements diffusion in the interfacial zone, which make the interface bonding well and bonding strength ideal at the interface. The results gotten by studying of crack produced by Vickers indentation technique in the interfacial zone show that it is diffcult to produce crack in the interface, the crack length in the cladding layer is longer than that to the interface, the crack which propagate to the interface stops at the interface rather than propagates along the interface. This suggests negligible residual stresses have developed because of thermal expansion mismatch. The bonding strength of the interface is 550MPa, which has been gotten by cutting test. The result gotten by analyzing the fracture surface shows that the fracture occurs at the side of cladding layer, which conrms that the bonding strength at the interface is higher than that in the cladding layer.
关键词:
ternary boride
,
null
,
null
