For Gu-Ag alloy, an important parameter called workability in the forming process of materials can be evaluated by processing maps yielded from the stress-strain data generated by hot compression tests at temperatures...For Gu-Ag alloy, an important parameter called workability in the forming process of materials can be evaluated by processing maps yielded from the stress-strain data generated by hot compression tests at temperatures of 700-850 °C and strain rates of 0.01-10 s-1. And at the true strain of 0.15, 0.35 and 0.55, respectively, the responses of strain-rate sensitivity, power dissipation efficiency and instability parameter to temperature and strain rate were studied. Instability maps and power dissipation maps were superimposed to form processing maps, which reveal the determinate regions where individual metallurgical processes occur and the limiting conditions of flow instability regions. Furthermore, the optimal processing parameters for bulk metal working are identified clearly by the processing maps.展开更多
Under the rapid development of urbanization in my country, peoples quality of life has been effectively improved, which has prompted the gradual increase of urban construction projects, and put forward higher requirem...Under the rapid development of urbanization in my country, peoples quality of life has been effectively improved, which has prompted the gradual increase of urban construction projects, and put forward higher requirements for the quality of various projects, which will help improve project safety and meet project construction requirements. Therefore, engineering surveying and mapping can effectively guarantee the quality of engineering. In engineering surveying and mapping, remote sensing surveying and mapping technology is widely used. Through the application of this technology, data and information can be quickly collected, and scientific analysis can be made to fully improve the measurement accuracy and lay a solid foundation for the development of engineering construction. Next, the article discusses the application of remote sensing surveying and mapping technology in surveying and mapping work.展开更多
基金Project(CSTC2009BA4065) supported by the Chongqing Natural Science Foundation,China
文摘For Gu-Ag alloy, an important parameter called workability in the forming process of materials can be evaluated by processing maps yielded from the stress-strain data generated by hot compression tests at temperatures of 700-850 °C and strain rates of 0.01-10 s-1. And at the true strain of 0.15, 0.35 and 0.55, respectively, the responses of strain-rate sensitivity, power dissipation efficiency and instability parameter to temperature and strain rate were studied. Instability maps and power dissipation maps were superimposed to form processing maps, which reveal the determinate regions where individual metallurgical processes occur and the limiting conditions of flow instability regions. Furthermore, the optimal processing parameters for bulk metal working are identified clearly by the processing maps.
文摘Under the rapid development of urbanization in my country, peoples quality of life has been effectively improved, which has prompted the gradual increase of urban construction projects, and put forward higher requirements for the quality of various projects, which will help improve project safety and meet project construction requirements. Therefore, engineering surveying and mapping can effectively guarantee the quality of engineering. In engineering surveying and mapping, remote sensing surveying and mapping technology is widely used. Through the application of this technology, data and information can be quickly collected, and scientific analysis can be made to fully improve the measurement accuracy and lay a solid foundation for the development of engineering construction. Next, the article discusses the application of remote sensing surveying and mapping technology in surveying and mapping work.
