High temperature mechanical properties and fracture characteristics of 7A12-T7352

The effect of temperature in range of room temperature -175 degree C on mechanical properties and fracture characteristics of 7A12-T7352 was investigated. The microstructures and fracture surfaces were analyzed by using TEM and SEM. The results show that the tensile strength in area is temperature-d...

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Bibliographic Details
Published in:Hang kong cai liao xue bao 2014-02, Vol.34 (1), p.82-85
Main Authors: Huang, Min, Chen, Yi, Li, Chao, Chen, Jun-Zhou, Ru, Ji-Gang
Format: Article
Language:Chinese
Subjects:
Fracture mechanics
Grain size
Mechanical properties
Microstructure
Precipitates
Precipitation
Tensile strength
Transmission electron microscopy
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Summary:The effect of temperature in range of room temperature -175 degree C on mechanical properties and fracture characteristics of 7A12-T7352 was investigated. The microstructures and fracture surfaces were analyzed by using TEM and SEM. The results show that the tensile strength in area is temperature-dependent and decreased with increasing the temperature. The microstructures of precipitates and grain size show nearly stable in high temperature tensile as investigated by TEM. Furthermore, there is remarkable effect slip characteristics and interface of slippage with increasing the temperature from fracture feature.
ISSN:1005-5053
DOI:10.3969/j.issn.1005-5053.2014.1.014