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首页> 外文期刊>ISIJ international >Formation of Intragranular Acicular Ferrite Grains in a Ti-containing Low Carbon Steel
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Formation of Intragranular Acicular Ferrite Grains in a Ti-containing Low Carbon Steel

机译：含钛低碳钢中晶状针状铁素体晶粒的形成

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摘要

The role of non-metallic inclusions and the nucleation mechanism of intragranular ferrite grains was investigated by electron microscopy (TEM, EBSD) in Ti-containing low carbon steel. Intragranular ferrite grains are formed from complex inclusions (Ti_2O_3+TiN, TiN + MnS). However, the TiN particles are an inclusion that most effectively promotes intragranular ferrite nucleation in this steel. One or more ferrite grains were nucleated from a TiN particle but all ferrite grains have a B-N orientation relationship with the TiN particle. The observed B-N relationship between the intragranular ferrite grains and the TiN particles suggests that the intragranular nucleation of ferrite from these complex inclusions is promoted by the crystal coherency of TiN with ferrite.
机译：通过电子显微镜（TEM，EBSD）研究了含钛低碳钢中非金属夹杂物的作用以及晶内铁素体晶粒的形核机理。晶粒内铁素体晶粒由复杂的夹杂物（Ti_2O_3 + TiN，TiN + MnS）形成。但是，TiN颗粒是一种夹杂物，可以最有效地促进这种钢中的晶粒内铁素体成核。 TiN颗粒中有一个或多个铁素体晶粒成核，但所有铁素体晶粒均与TiN颗粒具有B-N取向关系。观察到的晶粒内铁素体晶粒与TiN颗粒之间的B-N关系表明，TiN与铁素体的晶体相干性促进了这些复杂夹杂物中铁素体的晶粒内形核。

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