查询词典 metallographic

Based on analyzing the dilatometric curves, metallographic structures of test samples of these simulation procedures, four factors which have influences on the tendency of the appearance of the cold cracks in HAZ have been studied, these factors are preheating, slow cooling, expanding the cooling time (t8/5 and t8/3), and heat preservation.

通过对这些模拟过程的热膨胀曲线、试样金相组织等的分析，研究了焊前预热、焊后缓冷、延长冷却时间t8/5与t8/3、焊后保温这四种因素对焊接热影响区冷裂纹产生倾向的影响。

The microstructures and high-temperature properties of TC4 titanium alloy joints welded by the electron beam were investigated by high-temperature tensile test, high-temperature endurant tensile test and metallographic examination.

通过高温拉伸试验、高温持久拉伸试验以及金相分析对TC4钛合金电子束焊接接头的显微组织和高温性能进行了研究。

These advantages of EBW make its use expanding in the welding of titanium and its alloys.The microstructure and properties of TC4 alloy joints welded by the electron beam were investigated in this paper with room-temperature impact test, room-temperature tensile test, room-temperature notch tensile test, high-temperature tensile test, endurant tensile test, microhardness test and metallographic analysis.

本课题通过室温冲击、室温拉伸、室温缺口拉伸、高温拉伸、持久拉伸及显微硬度等力学性能试验和金相显微组织分析、断口扫描分析等，对TC4钛合金电子束焊接接头的组织和力学性能进行了分析和研究。

Therefore only a full understanding of the features of bakelite and the specialty of the inlaying machine and a correct operation of inlaying machine will assure a safe and effective inlaying of metallographic specimen.

只有在充分了解电木粉的特点以及镶嵌机的特殊之处，并正确地操作镶嵌机，才可以保证安全、有效地实现金相样品的镶嵌。

The important raw materials usually used in such thermosetting resin are bakelite,and metallographic specimen inlaying machine will be used in the same process.

热固性树脂中经常采用的原料是电木粉，镶嵌的过程需要使用到金相样品镶嵌机。

Inlaying is a key step in the specimen preparation process for the metallographic research process and it can be realized through various methods such as mechanic inlaying, resin inlaying and special inlaying.

镶嵌是金相研究过程中试样制备阶段的一个步骤，可采用机械镶嵌法、树脂镶嵌法以及特殊镶嵌法。

Through metallographic analyses, the failure is found to be dimple intercrystalline fracture under high strain-rate loading.

基于试样金相和断口分析，30CrMnSiNi2A钢在高应变率冲击加载条件下产生了韧窝型沿晶断裂，导致材料宏观上表现为剪切破坏。

The core of the thesis is automatic analysis of metallographic graph and design of software .

工作的核心是金相图谱的自动分析和软件设计。

Knowledge of metallographic analysis and material inspection methods.

具有一定的金相分析学和金属材料检测方法的知识4。

The study on metallographic specimen polishing machine at home and abroad was introduced.

介绍了国内外金相试样抛光机的研究情况，以及各种类型抛光机的性能与特点。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了