Z.Q. Sun
金属学报(英文版)
The microstructure evolution during deformation enhanced transformation of undercooled austenite of a plain low carbon steel has been investigated by means of hot compression simulation experiment under various conditions of strain rate, deformation temperature and strain. The effect of austenite grain size on the strain enhanced ferrite transformation has been studied. The ferrite dynamic recrystallization involved in successive hot deformation has been explored.
关键词:
deformation enhanced transformation
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Z.Q. Sun
金属学报(英文版)
The in situ synthesized MoSi2-SiC composite is proved to be of higher fracture tough-ness than the monolithic MoSi2. The TEM and HREM study reveals that the interfacebetween MoSi2/SiC is of direct atomic bonding without any amorphous glassy phase,such the SiO2 structure. Based on the fractography and the observation of crack prop-agation path from indentation, it is concluded that the toughening of such compositeat room temperature can be attributed to the high interfacial binding energy, the re-finement of the MoSi2 matrix and the defection and bridging behavior in the crackpropagation.
关键词:
MoSi2-SiC composite
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