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当钢中加入混合稀土时所形成的稀土夹杂物,是一些化合物固溶体。各种稀土元素相对含量不同,其夹杂物的化学性质、光学特征和点阵常数也会有所不同,有时甚至差别很大。在ASTM卡片上,查不到所需的数据,给X射线相分析工作带来困难,本文报导了几种混合稀土夹杂物的X射线的鉴定结果。试样是在25MnTiBRE钢浇注时,在模内逐步加入上海出产的铈镧合金,加入量为0.10%,钢锭热轧后,在相当于钢锭中部稀土夹杂物富集的部位,切取电解试棒,经860℃保温20分钟,油
When steel is added rare earth mixed rare earth inclusions, some solid solution compounds. The relative content of various rare earth elements vary, the chemical nature of inclusions, optical characteristics and lattice constant will be different, and sometimes even very different. On the ASTM card, the required data can not be found, which makes it difficult to analyze the X-ray phase. In this paper, the identification results of several X-ray mixed rare earth inclusions are reported. Sample is cast in 25MnTiBRE steel, the step by step to join the Shanghai-made cerium-lanthanum alloy in the mold, the amount added of 0.10%, ingot hot rolling, the equivalent of ingot rare earth inclusions in the central part of the enrichment, After 860 ℃ insulation 20 minutes, oil