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高温金相显微镜问世已经近七十年了,近几十年来高温金相装置有很大发展。利用该种装置观察金属试样在连续加热和冷却过程中组织的变化,研究再结晶,晶粒长大,以及研究在高温应力状态下组织变化情况,这些工作引起了金属材料工作者的兴趣。我们利用奥地利Reichert MeF-2型显微镜初步测定了钢中非金属夹杂物的熔点。试样的制备方法 1.选用一般金相试样数块,尺寸(单位:mm)约为25×25×30。在试样的横向(纵向)上仔细研磨成金相试样,将试样放在显微镜下选择有代表性的组织(夹杂物)的视场,以它为圆心,用刻划仪刻划直径为4mm的圆圈(苏P∏-2型刻划仪最大刻划直径为40
It has been nearly 70 years since the advent of high-temperature metallurgical microscopes. In recent decades, metallurgical equipment has developed greatly. This kind of device was used to observe the microstructure changes of metal samples during continuous heating and cooling, to study the recrystallization and grain growth, and to study the microstructure changes under high temperature stress. These efforts have attracted the interest of metal material workers. We used Austrian Reichert MeF-2 microscope preliminary determination of the melting point of non-metallic inclusions in steel. Preparation of the sample 1. Select the number of general metallographic sample pieces, size (unit: mm) is about 25 × 25 × 30. Carefully ground in the transverse direction (longitudinal direction) of the sample into a metallographic sample, the sample under the microscope to select a representative field of view (inclusions), with it as the center, with a scoring instrument scoring diameter 4mm circle (Su PΠ-2-type scriber maximum scribing diameter of 40