K. Zhang
,
YQ. Wang
,
B.L. Zhou
,
YH. Zhou and H.L. Li (Institute of Metal Research
,
Chinese Academy of Scie11ces
,
Shenyang 110015
,
China International Center of Materials Physics
,
Chinese Academy of Sciences
,
Shenyang 110015
,
China Dept. of Materials Science and Engineering
,
Northwestern Polytechnical University
,
Xi'an 710072
,
China)
金属学报(英文版)
The mechanical properties and deformation mechanisms of unidirectional carbon fiber reiopreed magnesium composites under tensile loading are studied. Two different materials are used as fiber coatings: a single silica and a gradient C/SiC/SiO2. The results show that, under the same preparation conditions, composite with the former coating is broken in a non-cumulative mode and its failure stress is rather low. Conversely, the latter coating demonstrates much better efficiency and the cormsponding composite is broken in a cumttlative mode.
关键词:
tensile properties
,
null
,
null
K. Zhang
,
W.P. Shen
,
C.C. Ge
,
null
,
null
金属学报(英文版)
W / Cu functionally gradient materials (FGMs) containing 1% La2O3 and 1% TiC were prepared using graded sintering under ultra-high pressure (GSUHP). The specimens have been found to exhibit low porosity (11.57% and 11.35%, respectively). Shearing strength of the specimens between layers is good. Moreover, the specimens have still demonstrated good performance in testing thermal-shock resistance. When power density of laser is 200MWm-2, the specimens have been tested for thermal-shock resistance (1000 times); the specimens that contained 1% La2O3 were not subjected to damage, whereas those that contained 1% TiC began to crack. Finally, effect of additives on thermal-shock resistance was also preliminarily discussed.
关键词:
W/Cu
,
null
,
null
,
null
