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131.轧后冷却工艺对铌钛微合金化低碳贝氏体钢组织性能的影响
[黑色金属冶炼和压延加工业] [2014-03-26]
The influence of cooling process on microstructure,second phase precipitation and mechanical property of Nb-Ti Micro-alloyed Low-Carbon Bainitic Steel has been examined by metalloscope and TEM.The results lustrate that accelerated cooling after air-cooling (relaxation) to a certain temperature could obtain ferrite / bainite dual phase structure.
关键词：钢铁；铌钛微合金；低碳贝氏体；组织性能；冷却过程
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132.低碳微合金钢的方铁矿的等温转变
[黑色金属冶炼和压延加工业] [2014-03-26]
The isothermal transformation of wustite (FeO) in the range of 650～350℃ was studied using Gleeble 3500 thermal simulated test machine,electron back-scatter diffraction (EBSD) and scanning electron microscopy (SEM).A wustite layer was initially formed by oxidizing low carbon micro-alloyed steel in air at 880℃ for 20 seconds.The layer was then isothermally annealed at 650-350℃ in argon for up to 10000 seconds.The transformation of FeO was comprised by a proeutectoid reaction and a eutectoid reaction.
关键词：钢铁；氧化亚铁；等温转变
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133.聚能装药射流穿透钢靶的三维数值模拟
[黑色金属冶炼和压延加工业] [2014-03-26]
In this paper,adopted explicit dynamic analyzing program AUTODYN basing on finite element to simulate the process of the shaped charge jet formation and the penetration through the steel target,base on the characteristic of the shaped charge structure and the mechanisms of jet penetrating the target.
关键词：钢铁；聚能装药；数值模拟
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134.激光刻划对晶粒取向硅的影响
[黑色金属冶炼和压延加工业] [2014-03-26]
Laser scribing is widely used to reduce core loss of grain-oriemed silicon steel recently.The effects of laser scribing on surface coating and magnetic properties of silicon steel were investigated in this paper.The effect of stress annealing treatment on laser scribing product has been analyzed.It was found that as laser power increased,the core loss reduced and the damage to surface coating exacerbated.Reducing the laser scribing line spacing to a certain width can achieve low core loss.The core loss of laser domain refined product will increase after annealing at certain temperature.
关键词：钢铁；晶粒取向硅；激光刻划；涂层
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135.钢铁热处理过程中氢气浓度在线测量系统的设计
[黑色金属冶炼和压延加工业] [2014-03-26]
This paper describes a hydrogen content on-line measurement system in the process of steel heat treatment based on the theory of hydrogen concentration cell.This System design includes two main measurement units and a MCU for calculation and output.The method of measurement data processing is discussed in this paper,and an algorithm of temperature value calibration is also proposed.Final test shows that the instrument has features of portability,continuity and real time capability,which make it has a potential future in the hydrogen content measurement in metallurgical enterprises.
关键词：钢铁；氢气浓度测量；温度标定；分段函数近似算法
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136.应用于锅炉气热回收中高压蒸发器的SA210钢管的腐蚀失效分析
[通用设备制造业,黑色金属冶炼和压延加工业] [2014-03-25]
The corrosion failure analysis of an SA210 steel used in high pressure evaporator tube is conducted by XRD,SEM,OM.The result shows that the corrosion products in the inner wall of the steel tube is Fe3O4,mainly caused by the residual water in the evaporator tube corroding its inner wall with oxygen after the hydrostatic test of the boiler,finally leading to the corrosion leak of the tube.
关键词：钢铁；SA210钢管；高压蒸发器；气热回收锅炉；氧腐蚀
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137.对850℃时效处理下2205双相不锈钢金属间相的定量分析
[黑色金属冶炼和压延加工业] [2014-03-25]
The precipitates in 850℃ aging 2205 Duplex stainless steel were extracted by the method of carbon extraction replicas.The method makes precipitates disperse uniformly and the contrast between precipitates and matrix distinct.TEM(Transmission Electron Microscope),EDS(Energy Dispersive Spectrometer) and SEM (Scanning Electron Microscope) were applied for the observation ofmicrostructure.The SEM micrographs were used for intermetallic size statistic,which revealed that the sizes of intermetallic increased with aging time.
关键词：钢铁；2205双相不锈钢；850℃时效处理；金属间化合物；碳萃取
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138.AISI1005钢在气体保护金属极电弧焊中计算模型的结构演化
[黑色金属冶炼和压延加工业] [2014-03-25]
A fully coupled (two-way), transient, thermal-mechanical finite-element procedure is developed to model conventional gas metal arc welding (GMAW) butt-joining process. Two-way thermal-mechanical coupling is achieved by making the mechanical material model of the workpiece and the weld temperaturedependent and by allowing the potential work of plastic deformation resulting from large thermal gradients to be dissipated in theform of heat.
关键词：钢铁；AISI1005；有限元模型；气体保护金属极弧焊；对接焊接；结构演化
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139.利用15crmo钢测定拉森米勒方程中的C值
[黑色金属冶炼和压延加工业] [2014-03-25]
A new method of determination of C parameter of Larson-Miller equation was introduced.For 15CrMo steel,the optimal value of parameter C in the equation was derived.The reliability of the obtained results was analyzed.
关键词：钢铁；拉森米勒方程；15crmo钢；参数确定
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140.钢铁坯料在高温下的抗氧化涂层
[黑色金属冶炼和压延加工业] [2014-03-25]
A new kind of anti-oxidation coating for steel billets at high temperature was prepared.The resistance property of the coatings for oxidation was investigated.The result indicated that the coatings could decrease the oxidation loss at 1300℃.The anti-oxidation mechanism of the coatings on the surface of steel billets at high temperature was proposed at the same time.
关键词：钢铁；高温抗氧化性能；钢铁坯料；涂层
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