【摘 要】
：
The microstructure and crystallographic texture characteristics of an extruded ZK60 Mg alloy subjected to cyclic extrusion and compression (CEC) up to 8 passes
【机 构】
：
National Engineering Research Center for Light Alloy Net Forming and State Key Laboratory of Metal M
论文部分内容阅读
The microstructure and crystallographic texture characteristics of an extruded ZK60 Mg alloy subjected to cyclic extrusion and compression (CEC) up to 8 passes at 503 K were investigated. The local crystallographic texture, grain size and distribution, and grain boundary character distributions were analyzed using high-resolution electron backscatter diffraction (EBSD). The results indicate that the microstructure is refined significantly by the CEC processing and the distributions of grain size tend to be more uniform with increasing CEC pass number. The fraction of low angle grain boundaries (LAGBs) decreases after CEC deformation, and a high fraction of high angle grain boundaries (HAGBs) is revealed after 8 passes of CEC. Moreover, the initial fiber texture becomes random during CEC processing and develops a new texture.
其他文献
Gene deletion vector pXL05(pKC1139∷△olmA1 +△olmA4) was used to disrupt oligomycin PKS encoding genes (olmA) in Streptomyces avermitilis CZ8-73, the producer
Rice fields provide food for over half of the world population but are also an important source of atmospheric CH4. Using the climate-based GIS empirical model
通过Ti6Al4V/TA1扩散偶的制备及其热处理试验,运用OPM,SEM以及EDS技术对扩散连接区域的组织、形貌、成分进行分析.结果表明:扩散连接界面充分结合,合金元素Al和V从Ti6A14V侧
We describe a new titanosaurian sauropod dinosaur, Borealosaurus wimani gen. et sp. nov., based on a distinctive mid-distal caudal vertebra from the early Late
This paper presents a new approach of designing the revolving cutter with constant pitch, and pro-vides geometric models. The corresponding models in the non-nu
This study was undertaken to construct a preliminary spatial analysis method for building an urban-suburban-rural category in the specific sample area of centra
Ecological restoration is widely employed from tens to millions of hectares in space, and from tens of days to thousands of years in time, which forces consider
Deformation twins and stacking faults were observed in nanostructure Al-Mg alloys subjected to high pressure torsion. These observations are surprising because
Japan ranks fifth in the world for the number of large dams. Environmental impacts of large dams are known, such as enormous losses of water or disruption of fi
Several methods for analysis of dissolved total phosphorus in seawater were reviewed. Discussions were focused on UV irradiation and persulphate oxidation metho