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Fe-C-Mn系亚共析钢临界区奥氏体长大研究
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作者 陈弋生 余永宁 《金属科学与工艺》 CSCD 北大核心 1990年第4期1-9,共9页
对 Fe-C-Mn 系亚共析钢在临界区退火时奥氏体的体积分数和成分分布的变化规律作计算机模拟和实验研究。结果表明:(1)奥氏体长大第一阶段体系处于伸平衡状态。(2)第二阶段初期体系处于局部平衡,后期过渡到全平衡状态;这一阶段 J_(mn)^(ā... 对 Fe-C-Mn 系亚共析钢在临界区退火时奥氏体的体积分数和成分分布的变化规律作计算机模拟和实验研究。结果表明:(1)奥氏体长大第一阶段体系处于伸平衡状态。(2)第二阶段初期体系处于局部平衡,后期过渡到全平衡状态;这一阶段 J_(mn)^(āb)>J_(Υb)^(mn),锰和碳在新生成的Υ相中富集。当 J_(mn)^(ab)=J_(mn)^(Υb)时,这一阶段结束。(3)第三阶段在全平衡状态下进行,动力学特征是J_(mn)^(Υb)>J_(mn)^(ab)这一阶段,Υ相发生体积收缩。 展开更多
关键词 FeCMn钢 亚共析钢 监界区 奥氏体
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Design of Remote Control System of Intelligent Community Based on Embedded Web Server
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作者 Fenfen Cheng 《International Journal of Technology Management》 2013年第3期66-68,共3页
A multichannel remote control system for imelligent community based on the STC89C54 chip was designed with the technique of embedded Web server. The control system can monitor 255 signals and eight control signals of ... A multichannel remote control system for imelligent community based on the STC89C54 chip was designed with the technique of embedded Web server. The control system can monitor 255 signals and eight control signals of one node at the same time, and can be connected to the internet by the TCP/IP protocol. So the field control information can be shown dynamically in a remote computer by way of web pages. The system has high convenience and friendly monitoring interface, then especially is fit for the large conamunity and storage that need multipoint monitoring and frequent switching door. 展开更多
关键词 Intelligent Community control Embedded Web server MULTICHANNEL STC89C54 Hall sensor CS1013
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