铝合金熔体氢含量计算模型建立及其可信性评价  

Buliding a Calculation Model of Hydrogen Content in Aluminum Alloy Melting and Its Reliability Evaluation

作　　者：李大勇[1] 孙谦[1] 张建雷[1] 

机构地区：[1]哈尔滨理工大学测控技术与通信工程学院,黑龙江哈尔滨150080

出　　处：《哈尔滨理工大学学报》2011年第5期1-4,共4页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金(51174067)

摘　　要：为了更加深入的了解铝合金凝固特性,经理论分析后,建立了铝液中氢扩散过程的数学模型,对铝合金熔体吸/释氢过程进行了动力学推导.对不同的熔体温度、保温时间以及熔体初始氢含量等工艺参数条件下铝熔体的表面吸氢情况进行了计算,并利用铝合金熔体氢分压动态测氢装置,对实际扩散过程做了测试,给出了诸多因素作用下的熔体氢含量变化曲线.计算结果与测试结果吻合,证明氢含量计算模型可信.For deeply learning the solidification character of aluminum alloy melt,on the basis of theoretical analysis,a model of hydrogen diffusion process in the aluminum alloy melt has been got in this paper,and the dynamics process of the melting breathing in/out hydrogen has been deduced.The melting surface states of breathing in hydrogen under different technological parameters such as melting temperature,holding time and initial hydrogen content have been calculated.Simultaneously,real diffusion process is tested by self-developed hydrogen partial pressure dynamic measuring system,and the hydrogen content changing curves affected by many factors are given.The results show that the model of calculating hydrogen content is credible.

关 键 词：铝合金 氢含量 计算模型 可信性评价 

分 类 号：TG233.2[金属学及工艺—铸造]