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首页> 外文会议>The 4th Australia-China-Japan joint symposium on iron and steelmaking >Thermodynamic Study on Precipitation Behavior of Inclusions in09CuPCrNi Steel with Rare Earth during Solidification
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Thermodynamic Study on Precipitation Behavior of Inclusions in09CuPCrNi Steel with Rare Earth during Solidification

机译：凝固过程中含稀土的09CuPCrNi钢中夹杂物沉淀行为的热力学研究

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摘要

To improve the comprehensive properties of09CuPCrNi weathering steel,rare earth elements were added to control the precipitation behavior of inclusions.A couple thermodynamic model of inclusions precipitation and elements segregation was established to quantificationally evaluate the precipitation behavior of inclusions in 09CuPCrNi weathering steel.The effects of types and addition amount of rare earth on the precipitation behavior of inclusions were investigated by the model.The existence state and variation of rare earth in clean09CuPCrNi steel were further discussed.The results showed that the types of inclusions in 09CuPCrNi steel transform from Al2O3,Ce2O2 S and MnS to CeN,Ce3S4 and Ce2O2 S with increasing the addition of Ce.And with the increase of La addition,the types of inclusions alter from A12O3,MnS and LaAlO3 to LaN,LaS and LaAlO3 in 09CuPCrNi steel.When the additions of Ce and La respectively arrive to 0.025％ and0.01％,Al2O3 can not precipitate.MnS can not precipitate when the additions of Ce or La arrive to 0.045％.The precipitation temperature of MnS decrease with the Ce or La addition increasing.
机译：为了提高09CuPCrNi耐候钢的综合性能，添加了稀土元素以控制夹杂物的析出行为。建立了夹杂物析出和元素偏析的热力学模型，以定量评估09CuPCrNi耐候钢的夹杂物的析出行为。通过该模型研究了稀土元素的种类和添加量对夹杂物的析出行为的影响。进一步研究了洁净的09CuPCrNi钢中稀土的存在状态和变化。结果表明，09CuPCrNi钢中夹杂物的类型由Al2O3，Ce2O2转变而来。随着Ce的添加，S和MnS转变为CeN，Ce3S4和Ce2O2 S.随着La的添加，夹杂物的类型从09CuPCrNi钢中的Al2O3，MnS和LaAlO3变为LaN，LaS和LaAlO3。 Ce和La分别达到0.025％和0.01％，Al2O3不能析出，MnS不能析出。 Ce或La的添加量达到0.045％。随着Ce或La添加量的增加，MnS的析出温度降低。

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