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首页> 外文期刊>Journal of rare earths >Effects of Rare Earth on Structure and Mechanical Properties of Clean BNbRE Steel
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Effects of Rare Earth on Structure and Mechanical Properties of Clean BNbRE Steel

机译：稀土对洁净BNbRE钢组织和力学性能的影响

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摘要

The mechanisms of RE in clean BNbRE steel were studied by means of experimental measurement, microstructural observation and theoretical analysis. For BNbRE steel, the state and the content of RE were measured, and the effects and the mechanisms of RE on sulfide inclusions, microstructure and properties of steel were determined. On the conj diction of increasing the cleanliness of steel, the mechanisms of RE in steel were changed to certain degree. Small amount of RE has the effect of cleaning, modifying inclusions and alloying in clean steel, too. With increasing the cleanliness of BNbRE steel, addition of RE should be decreased properly. Under experimental conditions, the optimum addition of RE is -0.01 percent (mass fraction) for clean BNbRE steel, while RE can evidently improve plasticity and impact toughness of BNbRE steel.
机译：通过实验测量，显微组织观察和理论分析，研究了纯净BNbRE钢中稀土的生成机理。测定了BNbRE钢的RE状态和含量，确定了RE对钢中硫化物夹杂物，组织和性能的影响及其机理。在提高钢的清洁度的前提下，钢中稀土的机理发生了一定程度的变化。少量的稀土也具有清洁，修饰夹杂物和清洁钢中合金化的作用。随着BNbRE钢清洁度的提高，应适当减少RE的添加。在实验条件下，对于干净的BNbRE钢，RE的最佳添加量为-0.01％（质量分数），而RE可以明显提高BNbRE钢的可塑性和冲击韧性。

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