Papers by Author: Qi Hao Fu

Abstract: On the basis of the analysis of investment project risk evaluation methods, this article mainly discusses the risk matrix method in the application of risk assessment in risk investment project and constructs the risk matrix for risk assessment in risk investment project and designs risk matrix based on the process of risk assessment, hoping to provide a scientific, rational, easy assessment method for risk assessment in risk investment project.

Abstract: By using cryogenic treatment on 7A04 aluminum alloy tested with micrographic analysis and mechanical properties test, we studied the impact on mechanical properties of 7A04 aluminum alloy The results showed that the strength of 7A04 aluminum alloy could be highly increased and the grain size would be reduced in the process through being treated in 480°C/80min + aging in 120°C/4h + cryogenic treatment + aging at 120°C/16h.7A04 aluminum alloy are more fully recrystallized to grain refinement and the tensile strength of it can be increased to 720Mpa after the treatment.