| 尹树春.稀土元素对中碳钢冲击韧性的影响[J].唐山学院学报,2018,31(6):60-63 |
| 稀土元素对中碳钢冲击韧性的影响 |
| Effect of Rare Earth Element on the Impact Toughness of Medium Carbon Steel |
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| DOI：10.16160/j.cnki.tsxyxb.2018.06.013 |
| 中文关键词: 中碳钢S50C 稀土元素 冲击韧性 |
| 英文关键词: steel of medium carbon S50C rare earth element impact toughness |
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| 中文摘要: |
| 为了研究稀土元素对中碳钢冲击韧性的影响，利用真空感应炉熔炼稀土合金化的S50C钢进行冲击韧性测试。应用JB-30B冲击试验机测定钢试样的冲击功，并通过SEM和EDS检测手段分析稀土元素对S50C钢微观结构的影响。结果表明，与未含稀土元素的钢试样相比，含有微量稀土元素（0.003 5%）的钢试样冲击功增加了0.45倍；晶粒明显细化，珠光体数量减少，软相的铁素体组织增多，且连成柔性的网状，同时钢中夹杂物由多面形改变为尺寸更小的球面形。 |
| 英文摘要: |
| In order to study the effect of rare earth element on the impact toughness of medium carbon steel, the S50C steel was tested, which was produced with rare earth (RE) alloying melt in vacuum induction furnace. In this experiment, the impact energy of the sample was tested through the impact testing machine JB 30B and the effect of rare earth elements on Microstructure of S50C steel was analyzed by SEM and EDS. The result shows that the impact energy of S50C steel with RE(0.003 5%) increased by 0.45 times, compared with the steel without RE; the Grains became more fine, the number of pearlite decreased,the ferrite in the soft phase increased and linked into a net; the inclusions in the steel were changed from polyhedral shapes to smaller spherical shapes. |
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