The NiCoCrAl alloy sheet was fabricated by electron beam physical vapor deposition technique and the effects of the heat treatment on the microstructure and tensile strength of the NiCoCrAl alloy sheet were investigat...The NiCoCrAl alloy sheet was fabricated by electron beam physical vapor deposition technique and the effects of the heat treatment on the microstructure and tensile strength of the NiCoCrAl alloy sheet were investigated. The heat treatment at 1050 °C is favorable to improve the interface bonding between the columnar structures due to the disappearance of the intergranular gaps. Comparing with the thin NiCoCrAl alloy sheet before heat treatment, the Ni3Al phase appears in the NiCoCrAl alloy sheet after heat treatment, which is favorable to improve the interface bonding between the columnar structures. The increase in the tensile strength and elongation is attributed to the improvement of the interface bonding between the columnar structures. The residual stress in the NiCoCrAl alloy sheet after heat treatment is reduced significantly, which also confirms that the interface bonding is improved by the heat treatment.展开更多
以卫星有效载荷总体方案变型设计为背景,探讨在人为或自然灾害的非正常情况下的应急设计方法.首先给出应急设计系统定义,然后给出实现应急设计基本依据:一是基于演化算法、A gen t、人机结合和协同设计理论;二是仿蚁群社会应急行为.本...以卫星有效载荷总体方案变型设计为背景,探讨在人为或自然灾害的非正常情况下的应急设计方法.首先给出应急设计系统定义,然后给出实现应急设计基本依据:一是基于演化算法、A gen t、人机结合和协同设计理论;二是仿蚁群社会应急行为.本系统的关键是,构造基于人与演化算法相结合的A gen t(hum an-com pu ter cooperation A gen t,HC-A gen t),进而基于混合P 2P网络模型构成多HC-A gen t的协同设计系统,以使该应急设计系统具有抗干扰、自适应、快速响应的设计能力.展开更多
基金Projects(51002019,91016024,51102031)supported by the National Natural Science Foundation of China
文摘The NiCoCrAl alloy sheet was fabricated by electron beam physical vapor deposition technique and the effects of the heat treatment on the microstructure and tensile strength of the NiCoCrAl alloy sheet were investigated. The heat treatment at 1050 °C is favorable to improve the interface bonding between the columnar structures due to the disappearance of the intergranular gaps. Comparing with the thin NiCoCrAl alloy sheet before heat treatment, the Ni3Al phase appears in the NiCoCrAl alloy sheet after heat treatment, which is favorable to improve the interface bonding between the columnar structures. The increase in the tensile strength and elongation is attributed to the improvement of the interface bonding between the columnar structures. The residual stress in the NiCoCrAl alloy sheet after heat treatment is reduced significantly, which also confirms that the interface bonding is improved by the heat treatment.
文摘以卫星有效载荷总体方案变型设计为背景,探讨在人为或自然灾害的非正常情况下的应急设计方法.首先给出应急设计系统定义,然后给出实现应急设计基本依据:一是基于演化算法、A gen t、人机结合和协同设计理论;二是仿蚁群社会应急行为.本系统的关键是,构造基于人与演化算法相结合的A gen t(hum an-com pu ter cooperation A gen t,HC-A gen t),进而基于混合P 2P网络模型构成多HC-A gen t的协同设计系统,以使该应急设计系统具有抗干扰、自适应、快速响应的设计能力.
